Add patches from Percona 5.0.75-b12, needs lots of testing still.

16 files changed, 16350 insertions, 0 deletions

diff --git a/0000_index.txt b/0000_index.txt
index 5e1c1fe..d720812 100644
--- a/0000_index.txt
+++ b/0000_index.txt
@@ -477,3 +477,94 @@
 @pn mysql
 @pn mysql-community
 @@ Prevent SIGBUS on Sparc with NDB
+
+@patch 1001_show_patches-percona-5.0.75-b12.patch
+@ver 5.00.75.00 to 5.00.99.99
+@pn mysql
+@pn mysql-community
+@@ Percona 5.0.75-b12: Patch listing in build data
+
+@patch 1002_microslow_innodb-percona-5.0.75-b12.patch
+@ver 5.00.75.00 to 5.00.99.99
+@pn mysql
+@pn mysql-community
+@@ Percona 5.0.75-b12: Extended statistics in slow.log
+
+@patch 1003_userstatv2-percona-5.0.75-b12.patch
+@ver 5.00.75.00 to 5.00.99.99
+@pn mysql
+@pn mysql-community
+@@ Percona 5.0.75-b12: SHOW USER/TABLE/INDEX statistics
+# Respin?
+
+@patch 1004_microsec_process-percona-5.0.75-b12.patch
+@ver 5.00.75.00 to 5.00.99.99
+@pn mysql
+@pn mysql-community
+@@ Percona 5.0.75-b12: Adds INFOMATION_SCHEMA.PROCESSLIST with TIME_MS column
+
+@patch 1005_innodb_io_patches-percona-5.0.75-b12.patch
+@ver 5.00.75.00 to 5.00.99.99
+@pn mysql
+@pn mysql-community
+@@ Percona 5.0.75-b12: Cluster of past InnoDB IO patches
+
+@patch 1006_mirror_binlog-percona-5.0.75-b12.patch
+@ver 5.00.75.00 to 5.00.99.99
+@pn mysql
+@pn mysql-community
+@@ Percona 5.0.75-b12: Mirroring binary logs on slave
+
+@patch 1007_mysqld_safe_syslog-percona-5.0.75-b12.patch
+@ver 5.00.75.00 to 5.00.99.99
+@pn mysql
+@pn mysql-community
+@@ Percona 5.0.75-b12: allows redirect output of error.log to syslog-ng
+
+@patch 1008_innodb_locks_held-percona-5.0.75-b12.patch
+@ver 5.00.75.00 to 5.00.99.99
+@pn mysql
+@pn mysql-community
+@@ Percona 5.0.75-b12: Add locks held, remove locked records in SHOW INNODB STATUS
+
+@patch 1009_innodb_show_bp-percona-5.0.75-b12.patch
+@ver 5.00.75.00 to 5.00.99.99
+@pn mysql
+@pn mysql-community
+@@ Percona 5.0.75-b12: show innodb buffer pool content
+
+@patch 1010_innodb_show_hashed_memory-percona-5.0.75-b12.patch
+@ver 5.00.75.00 to 5.00.99.99
+@pn mysql
+@pn mysql-community
+@@ Percona 5.0.75-b12: Adds additional information of InnoDB internal hash table memories in SHOW INNODB STATUS
+
+@patch 1011_innodb_check_fragmentation-percona-5.0.75-b12.patch
+@ver 5.00.75.00 to 5.00.99.99
+@pn mysql
+@pn mysql-community
+@@ Percona 5.0.75-b12: Session status to check fragmentation of the last InnoDB scan
+
+@patch 1012_innodb_io_pattern-percona-5.0.75-b12.patch
+@ver 5.00.75.00 to 5.00.99.99
+@pn mysql
+@pn mysql-community
+@@ Percona 5.0.75-b12: Information schema table of InnoDB IO counts for each datafile pages
+
+@patch 1013_innodb_fsync_source-percona-5.0.75-b12.patch
+@ver 5.00.75.00 to 5.00.99.99
+@pn mysql
+@pn mysql-community
+@@ Percona 5.0.75-b12: Information of fsync callers in InnoDB
+
+@patch 1100_split_buf_pool_mutex_fixed_optimistic_safe-percona-5.0.75-b12.patch
+@ver 5.00.75.00 to 5.00.99.99
+@pn mysql
+@pn mysql-community
+@@ Percona 5.0.75-b12: InnoDB patch to fix buffer pool scalability
+
+@patch 1101_innodb_rw_lock-percona-5.0.75-b12.patch
+@ver 5.00.75.00 to 5.00.99.99
+@pn mysql
+@pn mysql-community
+@@ Percona 5.0.75-b12: Fix of InnoDB rw_locks
diff --git a/1001_show_patches-percona-5.0.75-b12.patch b/1001_show_patches-percona-5.0.75-b12.patch
new file mode 100644
index 0000000..7f1d431
--- /dev/null
+++ b/1001_show_patches-percona-5.0.75-b12.patch
@@ -0,0 +1,288 @@
+diff -r c3e57b0c22c4 patch_info/show_patches.info
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/patch_info/show_patches.info	Mon Dec 22 00:25:06 2008 -0800
+@@ -0,0 +1,6 @@
++File=show_patches.patch
++Name=SHOW PATCHES
++Version=1.0
++Author=Jeremy Cole
++License=N/A
++Comment
+diff -r c3e57b0c22c4 sql/Makefile.am
+--- a/sql/Makefile.am	Mon Dec 22 00:20:06 2008 -0800
++++ b/sql/Makefile.am	Mon Dec 22 00:25:06 2008 -0800
+@@ -118,7 +118,7 @@
+ 			-DSHAREDIR="\"$(MYSQLSHAREdir)\"" \
+ 			@DEFS@
+ 
+-BUILT_SOURCES =		sql_yacc.cc sql_yacc.h lex_hash.h
++BUILT_SOURCES =		sql_yacc.cc sql_yacc.h lex_hash.h patch_info.h
+ EXTRA_DIST =		$(BUILT_SOURCES) nt_servc.cc nt_servc.h \
+ 			message.mc message.h message.rc MSG00001.bin \
+ 			examples/CMakeLists.txt CMakeLists.txt \
+@@ -175,6 +175,8 @@
+ udf_example_la_SOURCES= udf_example.c
+ udf_example_la_LDFLAGS= -module -rpath $(pkglibdir)
+ 
++patch_info.h: patch_info.h.pl
++	$(PERL) $< > $@
+ 
+ # Don't update the files from bitkeeper
+ %::SCCS/s.%
+diff -r c3e57b0c22c4 sql/Makefile.in
+--- a/sql/Makefile.in	Mon Dec 22 00:20:06 2008 -0800
++++ b/sql/Makefile.in	Mon Dec 22 00:25:06 2008 -0800
+@@ -561,7 +561,7 @@
+ gen_lex_hash_LDADD = $(LDADD) $(CXXLDFLAGS)
+ mysql_tzinfo_to_sql_SOURCES = mysql_tzinfo_to_sql.cc
+ mysql_tzinfo_to_sql_LDADD = @MYSQLD_EXTRA_LDFLAGS@ $(LDADD) $(CXXLDFLAGS)
+-BUILT_SOURCES = sql_yacc.cc sql_yacc.h lex_hash.h
++BUILT_SOURCES = sql_yacc.cc sql_yacc.h lex_hash.h patch_info.h
+ EXTRA_DIST = $(BUILT_SOURCES) nt_servc.cc nt_servc.h \
+ 			message.mc message.h message.rc MSG00001.bin \
+ 			examples/CMakeLists.txt CMakeLists.txt \
+@@ -1237,6 +1237,9 @@
+ 		./gen_lex_hash$(EXEEXT) > $@-t
+ 		$(MV) $@-t $@
+ 
++patch_info.h: patch_info.h.pl
++	$(PERL) $< > $@
++
+ # Don't update the files from bitkeeper
+ %::SCCS/s.%
+ # Tell versions [3.59,3.63) of GNU make to not export all variables.
+diff -r c3e57b0c22c4 sql/lex.h
+--- a/sql/lex.h	Mon Dec 22 00:20:06 2008 -0800
++++ b/sql/lex.h	Mon Dec 22 00:25:06 2008 -0800
+@@ -367,6 +367,7 @@
+   { "PACK_KEYS",	SYM(PACK_KEYS_SYM)},
+   { "PARTIAL",		SYM(PARTIAL)},
+   { "PASSWORD",		SYM(PASSWORD)},
++  { "PATCHES",		SYM(PATCHES)},
+   { "PHASE",            SYM(PHASE_SYM)},
+   { "POINT",		SYM(POINT_SYM)},
+   { "POLYGON",		SYM(POLYGON)},
+diff -r c3e57b0c22c4 sql/mysql_priv.h
+--- a/sql/mysql_priv.h	Mon Dec 22 00:20:06 2008 -0800
++++ b/sql/mysql_priv.h	Mon Dec 22 00:25:06 2008 -0800
+@@ -968,6 +968,7 @@
+ int mysqld_show_status(THD *thd);
+ int mysqld_show_variables(THD *thd,const char *wild);
+ bool mysqld_show_storage_engines(THD *thd);
++bool mysqld_show_patches(THD *thd);
+ bool mysqld_show_privileges(THD *thd);
+ bool mysqld_show_column_types(THD *thd);
+ bool mysqld_help (THD *thd, const char *text);
+diff -r c3e57b0c22c4 sql/patch_info.h.pl
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/sql/patch_info.h.pl	Mon Dec 22 00:25:06 2008 -0800
+@@ -0,0 +1,65 @@
++use strict;
++
++my $patch_info_path = '../patch_info';
++my $file = '';
++my $output = '';
++
++
++if (opendir(PATCH_DIR, $patch_info_path))
++{
++	while ((my $file = readdir(PATCH_DIR)))
++	{
++		open(PATCH_FILE, "<$patch_info_path/$file") || die("Unable to open $patch_info_path/$file ($!)");
++		my %fields;
++	
++		if ($file =~ /^\./)
++		{
++			next;
++		}	
++	
++		while (<PATCH_FILE>)
++		{
++			chomp;
++	
++			my ($key, $value) = split(/\s*=\s*/);
++			$fields{lc($key)} = $value;
++		}
++	
++		$output .= "{\"$fields{'file'}\", \"$fields{'name'}\", \"$fields{'version'}\", \"$fields{'author'}\", \"$fields{'license'}\",\"$fields{'comment'}\"},\n"
++	}
++}	
++
++print <<HEADER;
++
++/* Copyright (C) 2002-2006 MySQL AB
++
++   This program is free software; you can redistribute it and/or modify
++   it under the terms of the GNU General Public License as published by
++   the Free Software Foundation; version 2 of the License.
++
++   This program is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++   GNU General Public License for more details.
++
++   You should have received a copy of the GNU General Public License
++   along with this program; if not, write to the Free Software
++   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
++
++#ifdef USE_PRAGMA_INTERFACE
++#pragma interface			/* gcc class implementation */
++#endif
++
++struct patch {
++	const char *file;
++	const char *name;
++	const char *version;
++	const char *author;
++	const char *license;
++	const char *comment;
++}patches[] = {
++$output
++{NULL, NULL, NULL, NULL}
++};	
++
++HEADER
+diff -r c3e57b0c22c4 sql/sp_head.cc
+--- a/sql/sp_head.cc	Mon Dec 22 00:20:06 2008 -0800
++++ b/sql/sp_head.cc	Mon Dec 22 00:25:06 2008 -0800
+@@ -191,6 +191,7 @@
+   case SQLCOM_SHOW_MUTEX_STATUS:
+   case SQLCOM_SHOW_NEW_MASTER:
+   case SQLCOM_SHOW_OPEN_TABLES:
++  case SQLCOM_SHOW_PATCHES:
+   case SQLCOM_SHOW_PRIVILEGES:
+   case SQLCOM_SHOW_PROCESSLIST:
+   case SQLCOM_SHOW_SLAVE_HOSTS:
+diff -r c3e57b0c22c4 sql/sql_lex.h
+--- a/sql/sql_lex.h	Mon Dec 22 00:20:06 2008 -0800
++++ b/sql/sql_lex.h	Mon Dec 22 00:25:06 2008 -0800
+@@ -95,6 +95,7 @@
+   SQLCOM_XA_COMMIT, SQLCOM_XA_ROLLBACK, SQLCOM_XA_RECOVER,
+   SQLCOM_SHOW_PROC_CODE, SQLCOM_SHOW_FUNC_CODE,
+   SQLCOM_SHOW_PROFILE, SQLCOM_SHOW_PROFILES,
++  SQLCOM_SHOW_PATCHES,
+ 
+   /*
+     When a command is added here, be sure it's also added in mysqld.cc
+diff -r c3e57b0c22c4 sql/sql_parse.cc
+--- a/sql/sql_parse.cc	Mon Dec 22 00:20:06 2008 -0800
++++ b/sql/sql_parse.cc	Mon Dec 22 00:25:06 2008 -0800
+@@ -3947,6 +3947,9 @@
+     break;
+   case SQLCOM_SHOW_STORAGE_ENGINES:
+     res= mysqld_show_storage_engines(thd);
++    break;
++  case SQLCOM_SHOW_PATCHES:
++    res= mysqld_show_patches(thd);
+     break;
+   case SQLCOM_SHOW_PRIVILEGES:
+     res= mysqld_show_privileges(thd);
+diff -r c3e57b0c22c4 sql/sql_prepare.cc
+--- a/sql/sql_prepare.cc	Mon Dec 22 00:20:06 2008 -0800
++++ b/sql/sql_prepare.cc	Mon Dec 22 00:25:06 2008 -0800
+@@ -1790,6 +1790,7 @@
+   case SQLCOM_SHOW_DATABASES:
+   case SQLCOM_SHOW_PROCESSLIST:
+   case SQLCOM_SHOW_STORAGE_ENGINES:
++  case SQLCOM_SHOW_PATCHES:
+   case SQLCOM_SHOW_PRIVILEGES:
+   case SQLCOM_SHOW_COLUMN_TYPES:
+   case SQLCOM_SHOW_STATUS:
+diff -r c3e57b0c22c4 sql/sql_show.cc
+--- a/sql/sql_show.cc	Mon Dec 22 00:20:06 2008 -0800
++++ b/sql/sql_show.cc	Mon Dec 22 00:25:06 2008 -0800
+@@ -22,6 +22,7 @@
+ #include "sp.h"
+ #include "sp_head.h"
+ #include "sql_trigger.h"
++#include "patch_info.h"
+ #include <my_dir.h>
+ 
+ #ifdef HAVE_BERKELEY_DB
+@@ -45,6 +46,47 @@
+ static int
+ view_store_create_info(THD *thd, TABLE_LIST *table, String *buff);
+ bool schema_table_store_record(THD *thd, TABLE *table);
++
++/***************************************************************************
++** List patches built into this release
++***************************************************************************/
++
++bool mysqld_show_patches(THD *thd)
++{
++  List<Item> field_list;
++	int i = 0;
++  Protocol *protocol= thd->protocol;
++  DBUG_ENTER("mysqld_show_patches");
++
++  field_list.push_back(new Item_empty_string("File", 255));
++  field_list.push_back(new Item_empty_string("Name", 50));
++  field_list.push_back(new Item_empty_string("Version", 10));
++  field_list.push_back(new Item_empty_string("Author", 50));
++  field_list.push_back(new Item_empty_string("License", 50));
++  field_list.push_back(new Item_empty_string("Comment", 32));
++
++  if (protocol->send_fields(&field_list, Protocol::SEND_NUM_ROWS | Protocol::SEND_EOF))
++    DBUG_RETURN(TRUE);
++
++	for (i = 0; patches[i].file; i++)
++	{
++	  protocol->prepare_for_resend();
++  	protocol->store(patches[i].file, system_charset_info);
++  	protocol->store(patches[i].name, system_charset_info);
++  	protocol->store(patches[i].version, system_charset_info);
++  	protocol->store(patches[i].author, system_charset_info);
++  	protocol->store(patches[i].license, system_charset_info);
++  	protocol->store(patches[i].comment, system_charset_info);
++
++  	if (protocol->write())
++    	DBUG_RETURN(TRUE);
++	}	
++
++   
++  send_eof(thd);
++  DBUG_RETURN(FALSE);
++
++}
+ 
+ 
+ /***************************************************************************
+diff -r c3e57b0c22c4 sql/sql_yacc.yy
+--- a/sql/sql_yacc.yy	Mon Dec 22 00:20:06 2008 -0800
++++ b/sql/sql_yacc.yy	Mon Dec 22 00:25:06 2008 -0800
+@@ -824,6 +824,7 @@
+ %token  PAGE_SYM
+ %token  PARTIAL
+ %token  PASSWORD
++%token  PATCHES
+ %token  PARAM_MARKER
+ %token  PHASE_SYM
+ %token  POINTFROMTEXT
+@@ -8019,7 +8020,7 @@
+ 	;
+ 
+ show_param:
+-         DATABASES wild_and_where
++        DATABASES wild_and_where
+          {
+            LEX *lex= Lex;
+            lex->sql_command= SQLCOM_SELECT;
+@@ -8119,6 +8120,10 @@
+ 	    LEX *lex=Lex;
+ 	    lex->sql_command= SQLCOM_SHOW_STORAGE_ENGINES;
+ 	    WARN_DEPRECATED("SHOW TABLE TYPES", "SHOW [STORAGE] ENGINES");
++	  }
++	| PATCHES
++	  {
++	    Lex->sql_command= SQLCOM_SHOW_PATCHES;
+ 	  }
+ 	| opt_storage ENGINES_SYM
+ 	  {
+@@ -9554,6 +9559,7 @@
+ 	| PAGE_SYM              {}
+ 	| PARTIAL		{}
+ 	| PASSWORD		{}
++	| PATCHES {}
+         | PHASE_SYM             {}
+ 	| POINT_SYM		{}
+ 	| POLYGON		{}
diff --git a/1002_microslow_innodb-percona-5.0.75-b12.patch b/1002_microslow_innodb-percona-5.0.75-b12.patch
new file mode 100644
index 0000000..763981f
--- /dev/null
+++ b/1002_microslow_innodb-percona-5.0.75-b12.patch
@@ -0,0 +1,2472 @@
+diff -r 25523be1816e include/my_getopt.h
+--- a/include/my_getopt.h	Mon Dec 22 00:25:06 2008 -0800
++++ b/include/my_getopt.h	Mon Dec 22 00:26:39 2008 -0800
+@@ -28,7 +28,8 @@
+ #define GET_ULL        8
+ #define GET_STR        9
+ #define GET_STR_ALLOC 10
+-#define GET_DISABLED  11
++#define GET_DOUBLE    11
++#define GET_DISABLED  12
+ 
+ #define GET_ASK_ADDR	 128
+ #define GET_TYPE_MASK	 127
+diff -r 25523be1816e include/my_time.h
+--- a/include/my_time.h	Mon Dec 22 00:25:06 2008 -0800
++++ b/include/my_time.h	Mon Dec 22 00:26:39 2008 -0800
+@@ -140,7 +140,7 @@
+ int my_date_to_str(const MYSQL_TIME *l_time, char *to);
+ int my_datetime_to_str(const MYSQL_TIME *l_time, char *to);
+ int my_TIME_to_str(const MYSQL_TIME *l_time, char *to);
+-
++ulonglong my_timer(ulonglong *ltime, ulonglong frequency);
+ C_MODE_END
+ 
+ #endif /* _my_time_h_ */
+diff -r 25523be1816e innobase/buf/buf0buf.c
+--- a/innobase/buf/buf0buf.c	Mon Dec 22 00:25:06 2008 -0800
++++ b/innobase/buf/buf0buf.c	Mon Dec 22 00:26:39 2008 -0800
+@@ -37,6 +37,9 @@
+ #include "log0log.h"
+ #include "trx0undo.h"
+ #include "srv0srv.h"
++
++/* prototypes for new functions added to ha_innodb.cc */
++trx_t* innobase_get_trx();
+ 
+ /*
+ 		IMPLEMENTATION OF THE BUFFER POOL
+@@ -1086,6 +1089,36 @@
+ 	return(block);
+ }
+ 
++inline void _increment_page_get_statistics(buf_block_t* block, trx_t* trx)
++{
++	ulint           block_hash;
++	ulint           block_hash_byte;
++	byte            block_hash_offset;
++
++	ut_ad(block);
++
++	if (!srv_slow_log || !trx || !trx->take_stats)
++		return;
++
++	if (!trx->distinct_page_access_hash) {
++		trx->distinct_page_access_hash = mem_alloc(DPAH_SIZE);
++		memset(trx->distinct_page_access_hash, 0, DPAH_SIZE);
++	}
++
++        block_hash = ut_hash_ulint((block->space << 20) + block->space +
++					block->offset, DPAH_SIZE << 3);
++	block_hash_byte = block_hash >> 3;
++	block_hash_offset = (byte) block_hash & 0x07;
++	if (block_hash_byte < 0 || block_hash_byte >= DPAH_SIZE)
++		fprintf(stderr, "!!! block_hash_byte = %lu  block_hash_offset = %lu !!!\n", block_hash_byte, block_hash_offset);
++	if (block_hash_offset < 0 || block_hash_offset > 7)
++		fprintf(stderr, "!!! block_hash_byte = %lu  block_hash_offset = %lu !!!\n", block_hash_byte, block_hash_offset);
++	if ((trx->distinct_page_access_hash[block_hash_byte] & ((byte) 0x01 << block_hash_offset)) == 0)
++		trx->distinct_page_access++;
++	trx->distinct_page_access_hash[block_hash_byte] |= (byte) 0x01 << block_hash_offset;
++	return;
++}
++
+ /************************************************************************
+ This is the general function used to get access to a database page. */
+ 
+@@ -1108,6 +1141,11 @@
+ 	ulint		fix_type;
+ 	ibool		success;
+ 	ibool		must_read;
++	trx_t*          trx = NULL;
++	ulint           sec;
++	ulint           ms;
++	ib_longlong     start_time;
++	ib_longlong     finish_time;
+ 	
+ 	ut_ad(mtr);
+ 	ut_ad((rw_latch == RW_S_LATCH)
+@@ -1119,6 +1157,9 @@
+ #ifndef UNIV_LOG_DEBUG
+ 	ut_ad(!ibuf_inside() || ibuf_page(space, offset));
+ #endif
++	if (srv_slow_log) {
++		trx = innobase_get_trx();
++	}
+ 	buf_pool->n_page_gets++;
+ loop:
+ 	block = NULL;
+@@ -1148,7 +1189,7 @@
+ 			return(NULL);
+ 		}
+ 
+-		buf_read_page(space, offset);
++		buf_read_page(space, offset, trx);
+ 
+ #ifdef UNIV_DEBUG
+ 		buf_dbg_counter++;
+@@ -1261,6 +1302,11 @@
+ 		        /* Let us wait until the read operation
+ 			completes */
+ 
++			if (srv_slow_log && trx && trx->take_stats)
++			{
++				ut_usectime(&sec, &ms);
++				start_time = (ib_longlong)sec * 1000000 + ms;
++			}
+ 		        for (;;) {
+ 				mutex_enter(&block->mutex);
+ 
+@@ -1275,6 +1321,12 @@
+ 
+ 				       break;
+ 				}
++			}
++                	if (srv_slow_log && trx && trx->take_stats && start_time)
++			{
++				ut_usectime(&sec, &ms);
++        	        	finish_time = (ib_longlong)sec * 1000000 + ms;
++                		trx->io_reads_wait_timer += (ulint)(finish_time - start_time);
+ 			}
+ 		}
+ 
+@@ -1296,12 +1348,17 @@
+ 		/* In the case of a first access, try to apply linear
+ 		read-ahead */
+ 
+-		buf_read_ahead_linear(space, offset);
++		buf_read_ahead_linear(space, offset, trx);
+ 	}
+ 
+ #ifdef UNIV_IBUF_DEBUG
+ 	ut_a(ibuf_count_get(block->space, block->offset) == 0);
+ #endif
++
++	if (srv_slow_log) {
++		_increment_page_get_statistics(block, trx);
++	}
++	
+ 	return(block->frame);		
+ }
+ 
+@@ -1326,6 +1383,7 @@
+ 	ibool		accessed;
+ 	ibool		success;
+ 	ulint		fix_type;
++	trx_t*          trx = NULL;
+ 
+ 	ut_ad(mtr && block);
+ 	ut_ad((rw_latch == RW_S_LATCH) || (rw_latch == RW_X_LATCH));
+@@ -1440,13 +1498,18 @@
+ 		read-ahead */
+ 
+ 		buf_read_ahead_linear(buf_frame_get_space_id(guess),
+-					buf_frame_get_page_no(guess));
++					buf_frame_get_page_no(guess), trx);
+ 	}
+ 
+ #ifdef UNIV_IBUF_DEBUG
+ 	ut_a(ibuf_count_get(block->space, block->offset) == 0);
+ #endif
+ 	buf_pool->n_page_gets++;
++
++	if (srv_slow_log) {
++		trx = innobase_get_trx();
++		_increment_page_get_statistics(block, trx);
++	}
+ 
+ 	return(TRUE);
+ }
+@@ -1470,6 +1533,7 @@
+ 	buf_block_t*	block;
+ 	ibool		success;
+ 	ulint		fix_type;
++	trx_t*		trx = NULL;
+ 
+ 	ut_ad(mtr);
+ 	ut_ad((rw_latch == RW_S_LATCH) || (rw_latch == RW_X_LATCH));
+@@ -1558,6 +1622,11 @@
+ 		|| (ibuf_count_get(block->space, block->offset) == 0));
+ #endif
+ 	buf_pool->n_page_gets++;
++
++	if (srv_slow_log) {
++		trx = innobase_get_trx();
++		_increment_page_get_statistics(block, trx);
++	}
+ 
+ 	return(TRUE);
+ }
+diff -r 25523be1816e innobase/buf/buf0rea.c
+--- a/innobase/buf/buf0rea.c	Mon Dec 22 00:25:06 2008 -0800
++++ b/innobase/buf/buf0rea.c	Mon Dec 22 00:26:39 2008 -0800
+@@ -70,7 +70,8 @@
+ 			treat the tablespace as dropped; this is a timestamp we
+ 			use to stop dangling page reads from a tablespace
+ 			which we have DISCARDed + IMPORTed back */
+-	ulint	offset)	/* in: page number */
++	ulint	offset,	/* in: page number */
++	trx_t*  trx)
+ {
+ 	buf_block_t*	block;
+ 	ulint		wake_later;
+@@ -140,10 +141,10 @@
+ 
+ 	ut_a(block->state == BUF_BLOCK_FILE_PAGE);
+ 
+-	*err = fil_io(OS_FILE_READ | wake_later,
++	*err = _fil_io(OS_FILE_READ | wake_later,
+ 			sync, space,
+ 			offset, 0, UNIV_PAGE_SIZE,
+-			(void*)block->frame, (void*)block);
++			(void*)block->frame, (void*)block, trx);
+ 	ut_a(*err == DB_SUCCESS);
+ 
+ 	if (sync) {
+@@ -174,8 +175,9 @@
+ 			the page at the given page number does not get
+ 			read even if we return a value > 0! */
+ 	ulint	space,	/* in: space id */
+-	ulint	offset)	/* in: page number of a page which the current thread
++	ulint	offset,	/* in: page number of a page which the current thread
+ 			wants to access */
++	trx_t*  trx)
+ {
+ 	ib_longlong	tablespace_version;
+ 	buf_block_t*	block;
+@@ -270,7 +272,7 @@
+ 		if (!ibuf_bitmap_page(i)) {
+ 			count += buf_read_page_low(&err, FALSE, ibuf_mode
+ 					| OS_AIO_SIMULATED_WAKE_LATER,
+-				        space, tablespace_version, i);
++				        space, tablespace_version, i, trx);
+ 			if (err == DB_TABLESPACE_DELETED) {
+ 				ut_print_timestamp(stderr);
+ 				fprintf(stderr,
+@@ -314,7 +316,8 @@
+ 			/* out: number of page read requests issued: this can
+ 			be > 1 if read-ahead occurred */
+ 	ulint	space,	/* in: space id */
+-	ulint	offset)	/* in: page number */
++	ulint	offset,	/* in: page number */
++	trx_t*  trx)
+ {
+ 	ib_longlong	tablespace_version;
+ 	ulint		count;
+@@ -323,13 +326,13 @@
+ 
+ 	tablespace_version = fil_space_get_version(space);
+ 
+-	count = buf_read_ahead_random(space, offset);
++	count = buf_read_ahead_random(space, offset, trx);
+ 
+ 	/* We do the i/o in the synchronous aio mode to save thread
+ 	switches: hence TRUE */
+ 
+ 	count2 = buf_read_page_low(&err, TRUE, BUF_READ_ANY_PAGE, space,
+-					tablespace_version, offset);
++					tablespace_version, offset, trx);
+         srv_buf_pool_reads+= count2;
+ 	if (err == DB_TABLESPACE_DELETED) {
+ 	        ut_print_timestamp(stderr);
+@@ -374,8 +377,9 @@
+ /*==================*/
+ 			/* out: number of page read requests issued */
+ 	ulint	space,	/* in: space id */
+-	ulint	offset)	/* in: page number of a page; NOTE: the current thread
++	ulint	offset,	/* in: page number of a page; NOTE: the current thread
+ 			must want access to this page (see NOTE 3 above) */
++	trx_t*  trx)
+ {
+ 	ib_longlong	tablespace_version;
+ 	buf_block_t*	block;
+@@ -556,7 +560,7 @@
+ 		if (!ibuf_bitmap_page(i)) {
+ 			count += buf_read_page_low(&err, FALSE, ibuf_mode
+ 					| OS_AIO_SIMULATED_WAKE_LATER,
+-					space, 	tablespace_version, i);
++					space, 	tablespace_version, i, trx);
+ 			if (err == DB_TABLESPACE_DELETED) {
+ 				ut_print_timestamp(stderr);
+ 				fprintf(stderr,
+@@ -625,10 +629,10 @@
+ 	for (i = 0; i < n_stored; i++) {
+ 		if ((i + 1 == n_stored) && sync) {
+ 			buf_read_page_low(&err, TRUE, BUF_READ_ANY_PAGE,
+-				space_ids[i], space_versions[i], page_nos[i]);
++				space_ids[i], space_versions[i], page_nos[i], NULL);
+ 		} else {
+ 			buf_read_page_low(&err, FALSE, BUF_READ_ANY_PAGE,
+-				space_ids[i], space_versions[i], page_nos[i]);
++				space_ids[i], space_versions[i], page_nos[i], NULL);
+ 		}
+ 
+ 		if (err == DB_TABLESPACE_DELETED) {
+@@ -704,11 +708,11 @@
+ 
+ 		if ((i + 1 == n_stored) && sync) {
+ 			buf_read_page_low(&err, TRUE, BUF_READ_ANY_PAGE, space,
+-					tablespace_version, page_nos[i]);
++					tablespace_version, page_nos[i], NULL);
+ 		} else {
+ 			buf_read_page_low(&err, FALSE, BUF_READ_ANY_PAGE
+ 					| OS_AIO_SIMULATED_WAKE_LATER,
+-				       space, tablespace_version, page_nos[i]);
++				       space, tablespace_version, page_nos[i], NULL);
+ 		}
+ 	}
+ 	
+diff -r 25523be1816e innobase/fil/fil0fil.c
+--- a/innobase/fil/fil0fil.c	Mon Dec 22 00:25:06 2008 -0800
++++ b/innobase/fil/fil0fil.c	Mon Dec 22 00:26:39 2008 -0800
+@@ -3527,7 +3527,7 @@
+ 			node->name, node->handle, buf,
+ 			offset_low, offset_high,
+ 			UNIV_PAGE_SIZE * n_pages,
+-			NULL, NULL);
++			NULL, NULL, NULL);
+ #endif
+ 		if (success) {
+ 			node->size += n_pages;
+@@ -3851,7 +3851,7 @@
+ Reads or writes data. This operation is asynchronous (aio). */
+ 
+ ulint
+-fil_io(
++_fil_io(
+ /*===*/
+ 				/* out: DB_SUCCESS, or DB_TABLESPACE_DELETED
+ 				if we are trying to do i/o on a tablespace
+@@ -3877,8 +3877,9 @@
+ 	void*	buf,		/* in/out: buffer where to store read data
+ 				or from where to write; in aio this must be
+ 				appropriately aligned */
+-	void*	message)	/* in: message for aio handler if non-sync
++	void*	message,	/* in: message for aio handler if non-sync
+ 				aio used, else ignored */
++	trx_t*  trx)
+ {
+ 	fil_system_t*	system		= fil_system;
+ 	ulint		mode;
+@@ -4018,7 +4019,7 @@
+ #else
+ 	/* Queue the aio request */
+ 	ret = os_aio(type, mode | wake_later, node->name, node->handle, buf,
+-				offset_low, offset_high, len, node, message);
++				offset_low, offset_high, len, node, message, trx);
+ #endif
+ 	ut_a(ret);
+ 
+diff -r 25523be1816e innobase/include/buf0rea.h
+--- a/innobase/include/buf0rea.h	Mon Dec 22 00:25:06 2008 -0800
++++ b/innobase/include/buf0rea.h	Mon Dec 22 00:26:39 2008 -0800
+@@ -10,6 +10,7 @@
+ #define buf0rea_h
+ 
+ #include "univ.i"
++#include "trx0types.h"
+ #include "buf0types.h"
+ 
+ /************************************************************************
+@@ -25,7 +26,8 @@
+ 			/* out: number of page read requests issued: this can
+ 			be > 1 if read-ahead occurred */
+ 	ulint	space,	/* in: space id */
+-	ulint	offset);/* in: page number */
++	ulint	offset,	/* in: page number */
++	trx_t*  trx);
+ /************************************************************************
+ Applies linear read-ahead if in the buf_pool the page is a border page of
+ a linear read-ahead area and all the pages in the area have been accessed.
+@@ -55,8 +57,9 @@
+ /*==================*/
+ 			/* out: number of page read requests issued */
+ 	ulint	space,	/* in: space id */
+-	ulint	offset);/* in: page number of a page; NOTE: the current thread
++	ulint	offset,	/* in: page number of a page; NOTE: the current thread
+ 			must want access to this page (see NOTE 3 above) */
++	trx_t*  trx);
+ /************************************************************************
+ Issues read requests for pages which the ibuf module wants to read in, in
+ order to contract the insert buffer tree. Technically, this function is like
+diff -r 25523be1816e innobase/include/fil0fil.h
+--- a/innobase/include/fil0fil.h	Mon Dec 22 00:25:06 2008 -0800
++++ b/innobase/include/fil0fil.h	Mon Dec 22 00:26:39 2008 -0800
+@@ -534,8 +534,11 @@
+ /************************************************************************
+ Reads or writes data. This operation is asynchronous (aio). */
+ 
++#define fil_io(type, sync, space_id, block_offset, byte_offset, len, buf, message) \
++	_fil_io(type, sync, space_id, block_offset, byte_offset, len, buf, message, NULL)
++
+ ulint
+-fil_io(
++_fil_io(
+ /*===*/
+ 				/* out: DB_SUCCESS, or DB_TABLESPACE_DELETED
+ 				if we are trying to do i/o on a tablespace
+@@ -561,8 +564,9 @@
+ 	void*	buf,		/* in/out: buffer where to store read data
+ 				or from where to write; in aio this must be
+ 				appropriately aligned */
+-	void*	message);	/* in: message for aio handler if non-sync
++	void*	message,	/* in: message for aio handler if non-sync
+ 				aio used, else ignored */
++	trx_t*  trx);
+ /************************************************************************
+ Reads data from a space to a buffer. Remember that the possible incomplete
+ blocks at the end of file are ignored: they are not taken into account when
+diff -r 25523be1816e innobase/include/os0file.h
+--- a/innobase/include/os0file.h	Mon Dec 22 00:25:06 2008 -0800
++++ b/innobase/include/os0file.h	Mon Dec 22 00:26:39 2008 -0800
+@@ -10,6 +10,8 @@
+ #define os0file_h
+ 
+ #include "univ.i"
++
++#include "trx0types.h"
+ 
+ #ifndef __WIN__
+ #include <dirent.h>
+@@ -421,8 +423,11 @@
+ /***********************************************************************
+ Requests a synchronous read operation. */
+ 
++#define os_file_read(file, buf, offset, offset_high, n)         \
++		_os_file_read(file, buf, offset, offset_high, n, NULL)
++
+ ibool
+-os_file_read(
++_os_file_read(
+ /*=========*/
+ 				/* out: TRUE if request was
+ 				successful, FALSE if fail */
+@@ -432,7 +437,8 @@
+ 				offset where to read */
+ 	ulint		offset_high,/* in: most significant 32 bits of
+ 				offset */
+-	ulint		n);	/* in: number of bytes to read */	
++	ulint		n,	/* in: number of bytes to read */
++	trx_t*		trx);
+ /***********************************************************************
+ Rewind file to its start, read at most size - 1 bytes from it to str, and
+ NUL-terminate str. All errors are silently ignored. This function is
+@@ -584,7 +590,8 @@
+ 				can be used to identify a completed aio
+ 				operation); if mode is OS_AIO_SYNC, these
+ 				are ignored */
+-	void*		message2);
++	void*		message2,
++	trx_t*          trx);
+ /****************************************************************************
+ Wakes up all async i/o threads so that they know to exit themselves in
+ shutdown. */
+diff -r 25523be1816e innobase/include/srv0srv.h
+--- a/innobase/include/srv0srv.h	Mon Dec 22 00:25:06 2008 -0800
++++ b/innobase/include/srv0srv.h	Mon Dec 22 00:26:39 2008 -0800
+@@ -26,6 +26,8 @@
+ at a time */
+ #define SRV_AUTO_EXTEND_INCREMENT	\
+ 	(srv_auto_extend_increment * ((1024 * 1024) / UNIV_PAGE_SIZE))
++
++extern ibool	srv_slow_log;
+ 
+ /* This is set to TRUE if the MySQL user has set it in MySQL */
+ extern ibool	srv_lower_case_table_names;
+diff -r 25523be1816e innobase/include/trx0trx.h
+--- a/innobase/include/trx0trx.h	Mon Dec 22 00:25:06 2008 -0800
++++ b/innobase/include/trx0trx.h	Mon Dec 22 00:26:39 2008 -0800
+@@ -668,6 +668,17 @@
+ 	/*------------------------------*/
+ 	char detailed_error[256];	/* detailed error message for last
+ 					error, or empty. */
++	/*------------------------------*/
++	ulint		io_reads;
++	ib_longlong     io_read;
++	ulint		io_reads_wait_timer;
++	ib_longlong     lock_que_wait_ustarted;
++	ulint           lock_que_wait_timer;
++	ulint           innodb_que_wait_timer;
++	ulint           distinct_page_access;
++#define	DPAH_SIZE	8192
++	byte*		distinct_page_access_hash;
++	ibool		take_stats;
+ };
+ 
+ #define TRX_MAX_N_THREADS	32	/* maximum number of concurrent
+diff -r 25523be1816e innobase/lock/lock0lock.c
+--- a/innobase/lock/lock0lock.c	Mon Dec 22 00:25:06 2008 -0800
++++ b/innobase/lock/lock0lock.c	Mon Dec 22 00:26:39 2008 -0800
+@@ -1806,6 +1806,8 @@
+ {
+ 	lock_t*	lock;
+ 	trx_t*	trx;
++	ulint   sec;
++	ulint   ms;
+ 	
+ #ifdef UNIV_SYNC_DEBUG
+ 	ut_ad(mutex_own(&kernel_mutex));
+@@ -1861,6 +1863,10 @@
+ 	trx->que_state = TRX_QUE_LOCK_WAIT;
+ 	trx->was_chosen_as_deadlock_victim = FALSE;
+ 	trx->wait_started = time(NULL);
++	if (srv_slow_log && trx->take_stats) {
++		ut_usectime(&sec, &ms);
++		trx->lock_que_wait_ustarted = (ib_longlong)sec * 1000000 + ms;
++	}
+ 
+ 	ut_a(que_thr_stop(thr));
+ 
+@@ -3514,7 +3520,9 @@
+ {
+ 	lock_t*	lock;
+ 	trx_t*	trx;
+-	
++	ulint   sec;
++	ulint   ms;
++
+ #ifdef UNIV_SYNC_DEBUG
+ 	ut_ad(mutex_own(&kernel_mutex));
+ #endif /* UNIV_SYNC_DEBUG */
+@@ -3564,6 +3572,10 @@
+ 		return(DB_SUCCESS);
+ 	}
+ 	
++	if (srv_slow_log && trx->take_stats) {
++		ut_usectime(&sec, &ms);
++		trx->lock_que_wait_ustarted = (ib_longlong)sec * 1000000 + ms;
++	}
+ 	trx->que_state = TRX_QUE_LOCK_WAIT;
+ 	trx->was_chosen_as_deadlock_victim = FALSE;
+ 	trx->wait_started = time(NULL);
+diff -r 25523be1816e innobase/os/os0file.c
+--- a/innobase/os/os0file.c	Mon Dec 22 00:25:06 2008 -0800
++++ b/innobase/os/os0file.c	Mon Dec 22 00:26:39 2008 -0800
+@@ -14,6 +14,7 @@
+ #include "srv0start.h"
+ #include "fil0fil.h"
+ #include "buf0buf.h"
++#include "trx0sys.h"
+ 
+ #if defined(UNIV_HOTBACKUP) && defined(__WIN__)
+ /* Add includes for the _stat() call to compile on Windows */
+@@ -1903,9 +1904,13 @@
+ #ifndef __WIN__
+ /***********************************************************************
+ Does a synchronous read operation in Posix. */
++
++#define os_file_pread(file, buf, n, offset, offset_high)        \
++		_os_file_pread(file, buf, n, offset, offset_high, NULL);
++
+ static
+ ssize_t
+-os_file_pread(
++_os_file_pread(
+ /*==========*/
+ 				/* out: number of bytes read, -1 if error */
+ 	os_file_t	file,	/* in: handle to a file */
+@@ -1913,12 +1918,17 @@
+ 	ulint		n,	/* in: number of bytes to read */	
+ 	ulint		offset,	/* in: least significant 32 bits of file
+ 				offset from where to read */
+-	ulint		offset_high) /* in: most significant 32 bits of
+-				offset */
++	ulint		offset_high, /* in: most significant 32 bits of
++				offset */
++        trx_t*		trx)
+ {
+         off_t	offs;
+ 	ssize_t	n_bytes;
+-
++	ulint           sec;
++	ulint           ms;
++	ib_longlong     start_time;
++	ib_longlong     finish_time;
++	
+ 	ut_a((offset & 0xFFFFFFFFUL) == offset);
+         
+         /* If off_t is > 4 bytes in size, then we assume we can pass a
+@@ -1937,7 +1947,13 @@
+         }
+ 
+ 	os_n_file_reads++;
+-
++	if (srv_slow_log && trx && trx->take_stats)
++	{
++	        trx->io_reads++;
++		trx->io_read += n;
++		ut_usectime(&sec, &ms);
++		start_time = (ib_longlong)sec * 1000000 + ms;
++	}
+ #if defined(HAVE_PREAD) && !defined(HAVE_BROKEN_PREAD)
+         os_mutex_enter(os_file_count_mutex);
+ 	os_file_n_pending_preads++;
+@@ -1951,6 +1967,13 @@
+ 	os_n_pending_reads--;
+         os_mutex_exit(os_file_count_mutex);
+ 
++        if (srv_slow_log && trx && trx->take_stats && start_time)
++        {
++		ut_usectime(&sec, &ms);
++        	finish_time = (ib_longlong)sec * 1000000 + ms;
++                trx->io_reads_wait_timer += (ulint)(finish_time - start_time);
++	}
++
+ 	return(n_bytes);
+ #else
+ 	{
+@@ -1980,6 +2003,13 @@
+         os_mutex_enter(os_file_count_mutex);
+ 	os_n_pending_reads--;
+         os_mutex_exit(os_file_count_mutex);
++
++        if (srv_slow_log && trx && trx->take_stats && start_time)
++        {
++		ut_usectime(&sec, &ms);
++        	finish_time = (ib_longlong)sec * 1000000 + ms;
++                trx->io_reads_wait_timer += (ulint)(finish_time - start_time);
++	}
+ 
+ 	return(ret);
+ 	}
+@@ -2103,7 +2133,7 @@
+ Requests a synchronous positioned read operation. */
+ 
+ ibool
+-os_file_read(
++_os_file_read(
+ /*=========*/
+ 				/* out: TRUE if request was
+ 				successful, FALSE if fail */
+@@ -2113,7 +2143,8 @@
+ 				offset where to read */
+ 	ulint		offset_high, /* in: most significant 32 bits of
+ 				offset */
+-	ulint		n)	/* in: number of bytes to read */	
++	ulint		n,	/* in: number of bytes to read */
++        trx_t*		trx)
+ {
+ #ifdef __WIN__
+ 	BOOL		ret;
+@@ -2177,7 +2208,7 @@
+ 	os_bytes_read_since_printout += n;
+ 
+ try_again:
+-	ret = os_file_pread(file, buf, n, offset, offset_high);
++	ret = _os_file_pread(file, buf, n, offset, offset_high, trx);
+ 
+ 	if ((ulint)ret == n) {
+ 
+@@ -3137,7 +3168,8 @@
+ 				offset */
+ 	ulint		offset_high, /* in: most significant 32 bits of
+ 				offset */
+-	ulint		len)	/* in: length of the block to read or write */
++	ulint		len,	/* in: length of the block to read or write */
++	trx_t*          trx)
+ {
+ 	os_aio_slot_t*	slot;
+ #ifdef WIN_ASYNC_IO
+@@ -3390,7 +3422,8 @@
+ 				can be used to identify a completed aio
+ 				operation); if mode is OS_AIO_SYNC, these
+ 				are ignored */
+-	void*		message2)
++	void*		message2,
++	trx_t*          trx)
+ {
+ 	os_aio_array_t*	array;
+ 	os_aio_slot_t*	slot;
+@@ -3429,8 +3462,8 @@
+ 		wait in the Windows case. */
+ 
+ 		if (type == OS_FILE_READ) {
+-			return(os_file_read(file, buf, offset,
+-							offset_high, n));
++			return(_os_file_read(file, buf, offset,
++							offset_high, n, trx));
+ 		}
+ 
+ 		ut_a(type == OS_FILE_WRITE);
+@@ -3463,8 +3496,13 @@
+ 		ut_error;
+ 	}
+ 	
++	if (trx && type == OS_FILE_READ)
++	{
++		trx->io_reads++;
++		trx->io_read += n;
++	}
+ 	slot = os_aio_array_reserve_slot(type, array, message1, message2, file,
+-					name, buf, offset, offset_high, n);
++					name, buf, offset, offset_high, n, trx);
+ 	if (type == OS_FILE_READ) {
+ 		if (os_aio_use_native_aio) {
+ #ifdef WIN_ASYNC_IO
+diff -r 25523be1816e innobase/srv/srv0srv.c
+--- a/innobase/srv/srv0srv.c	Mon Dec 22 00:25:06 2008 -0800
++++ b/innobase/srv/srv0srv.c	Mon Dec 22 00:26:39 2008 -0800
+@@ -47,6 +47,8 @@
+ #include "dict0boot.h"
+ #include "srv0start.h"
+ #include "row0mysql.h"
++
++ibool	srv_slow_log = 0;
+ 
+ /* This is set to TRUE if the MySQL user has set it in MySQL; currently
+ affects only FOREIGN KEY definition parsing */
+@@ -996,6 +998,10 @@
+ 	ibool			has_slept = FALSE;
+ 	srv_conc_slot_t*	slot	  = NULL;
+ 	ulint			i;
++	ib_longlong             start_time = 0L;
++	ib_longlong             finish_time = 0L;
++	ulint                   sec;
++	ulint                   ms;
+ 
+ 	/* If trx has 'free tickets' to enter the engine left, then use one
+ 	such ticket */
+@@ -1054,6 +1060,7 @@
+     if (SRV_THREAD_SLEEP_DELAY > 0)
+     {
+       os_thread_sleep(SRV_THREAD_SLEEP_DELAY);
++      trx->innodb_que_wait_timer += SRV_THREAD_SLEEP_DELAY;
+     }
+ 
+ 		trx->op_info = "";
+@@ -1109,11 +1116,22 @@
+ 	/* Go to wait for the event; when a thread leaves InnoDB it will
+ 	release this thread */
+ 
++	if (srv_slow_log && trx->take_stats) {
++		ut_usectime(&sec, &ms);
++		start_time = (ib_longlong)sec * 1000000 + ms;
++	}
++
+ 	trx->op_info = "waiting in InnoDB queue";
+ 
+ 	os_event_wait(slot->event);
+ 
+ 	trx->op_info = "";
++
++	if (srv_slow_log && trx->take_stats && start_time) {
++		ut_usectime(&sec, &ms);
++		finish_time = (ib_longlong)sec * 1000000 + ms;
++		trx->innodb_que_wait_timer += (ulint)(finish_time - start_time);
++	}
+ 
+ 	os_fast_mutex_lock(&srv_conc_mutex);
+ 
+diff -r 25523be1816e innobase/trx/trx0trx.c
+--- a/innobase/trx/trx0trx.c	Mon Dec 22 00:25:06 2008 -0800
++++ b/innobase/trx/trx0trx.c	Mon Dec 22 00:26:39 2008 -0800
+@@ -190,6 +190,15 @@
+ 	trx->global_read_view_heap = mem_heap_create(256);
+ 	trx->global_read_view = NULL;
+ 	trx->read_view = NULL;
++	
++	trx->io_reads = 0;
++	trx->io_read = 0;
++	trx->io_reads_wait_timer = 0;
++	trx->lock_que_wait_timer = 0;
++	trx->innodb_que_wait_timer = 0;
++	trx->distinct_page_access = 0;
++	trx->distinct_page_access_hash = NULL;
++	trx->take_stats = FALSE;
+ 
+ 	/* Set X/Open XA transaction identification to NULL */
+ 	memset(&trx->xid, 0, sizeof(trx->xid));
+@@ -230,6 +239,11 @@
+ 
+ 	trx->mysql_process_no = os_proc_get_number();
+ 	
++	if (srv_slow_log && trx->take_stats) {
++		trx->distinct_page_access_hash = mem_alloc(DPAH_SIZE);
++		memset(trx->distinct_page_access_hash, 0, DPAH_SIZE);
++	}
++
+ 	return(trx);
+ }
+ 
+@@ -366,6 +380,12 @@
+ /*===============*/
+ 	trx_t*	trx)	/* in, own: trx object */
+ {
++	if (trx->distinct_page_access_hash)
++	{
++		mem_free(trx->distinct_page_access_hash);
++		trx->distinct_page_access_hash= NULL;
++	}
++
+ 	thr_local_free(trx->mysql_thread_id);
+ 
+ 	mutex_enter(&kernel_mutex);
+@@ -389,6 +409,12 @@
+ /*====================*/
+ 	trx_t*	trx)	/* in, own: trx object */
+ {
++	if (trx->distinct_page_access_hash)
++	{
++		mem_free(trx->distinct_page_access_hash);
++		trx->distinct_page_access_hash= NULL;
++	}
++
+ 	mutex_enter(&kernel_mutex);
+ 	
+ 	trx_free(trx);
+@@ -1064,7 +1090,10 @@
+ 	trx_t*	trx)	/* in: transaction */
+ {
+ 	que_thr_t*	thr;
+-
++	ulint           sec;
++	ulint           ms;
++	ib_longlong     now;
++	
+ #ifdef UNIV_SYNC_DEBUG
+ 	ut_ad(mutex_own(&kernel_mutex));
+ #endif /* UNIV_SYNC_DEBUG */
+@@ -1080,6 +1109,11 @@
+ 		thr = UT_LIST_GET_FIRST(trx->wait_thrs);
+ 	}
+ 
++	if (srv_slow_log && trx->take_stats) {
++		ut_usectime(&sec, &ms);
++		now = (ib_longlong)sec * 1000000 + ms;
++		trx->lock_que_wait_timer += (ulint)(now - trx->lock_que_wait_ustarted);
++	}
+ 	trx->que_state = TRX_QUE_RUNNING;
+ }
+ 
+@@ -1093,6 +1127,9 @@
+ 	trx_t*	trx)	/* in: transaction in the TRX_QUE_LOCK_WAIT state */
+ {
+ 	que_thr_t*	thr;
++	ulint           sec;
++	ulint           ms;
++	ib_longlong     now;
+ 
+ #ifdef UNIV_SYNC_DEBUG
+ 	ut_ad(mutex_own(&kernel_mutex));
+@@ -1109,6 +1146,11 @@
+ 		thr = UT_LIST_GET_FIRST(trx->wait_thrs);
+ 	}
+ 
++	if (srv_slow_log && trx->take_stats) {
++		ut_usectime(&sec, &ms);
++		now = (ib_longlong)sec * 1000000 + ms;
++		trx->lock_que_wait_timer += (ulint)(now - trx->lock_que_wait_ustarted);
++	}
+ 	trx->que_state = TRX_QUE_RUNNING;
+ }
+ 
+diff -r 25523be1816e mysys/my_getopt.c
+--- a/mysys/my_getopt.c	Mon Dec 22 00:25:06 2008 -0800
++++ b/mysys/my_getopt.c	Mon Dec 22 00:26:39 2008 -0800
+@@ -1061,6 +1061,9 @@
+       case GET_ULONG:
+ 	printf("%lu\n", *((ulong*) value));
+ 	break;
++      case GET_DOUBLE:
++	printf("%6f\n", *((double*) value));
++	break;
+       case GET_LL:
+ 	printf("%s\n", llstr(*((longlong*) value), buff));
+ 	break;
+diff -r 25523be1816e patch_info/microslow_innodb.info
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/patch_info/microslow_innodb.info	Mon Dec 22 00:26:39 2008 -0800
+@@ -0,0 +1,15 @@
++File=microslow_innodb.patch
++Name=Extended statistics in slow.log
++Version=1.2
++Author=Percona <info@percona.com>
++License=GPL
++Comment=
++Changelog
++2008-11-26
++YK: Fix inefficient determination of trx, Make not to call useless gettimeofday when don't use slow log. Make log_slow_queries dynamic (bool).
++
++2008-11-07
++VT: Moved log_slow_rate_limit in SHOW VARIABLE into right place
++
++2008-11
++Arjen Lentz: Fixups (backward compatibility) by Arjen Lentz <arjen@openquery.com.au>
+diff -r 25523be1816e scripts/mysqldumpslow.sh
+--- a/scripts/mysqldumpslow.sh	Mon Dec 22 00:25:06 2008 -0800
++++ b/scripts/mysqldumpslow.sh	Mon Dec 22 00:26:39 2008 -0800
+@@ -83,8 +83,8 @@
+     s/^#? Time: \d{6}\s+\d+:\d+:\d+.*\n//;
+     my ($user,$host) = s/^#? User\@Host:\s+(\S+)\s+\@\s+(\S+).*\n// ? ($1,$2) : ('','');
+ 
+-    s/^# Query_time: (\d+)  Lock_time: (\d+)  Rows_sent: (\d+).*\n//;
+-    my ($t, $l, $r) = ($1, $2, $3);
++    s/^# Query_time: (\d+(\.\d+)?)  Lock_time: (\d+(\.\d+)?)  Rows_sent: (\d+(\.\d+)?).*\n//;
++    my ($t, $l, $r) = ($1, $3, $5);
+     $t -= $l unless $opt{l};
+ 
+     # remove fluff that mysqld writes to log when it (re)starts:
+diff -r 25523be1816e sql-common/my_time.c
+--- a/sql-common/my_time.c	Mon Dec 22 00:25:06 2008 -0800
++++ b/sql-common/my_time.c	Mon Dec 22 00:26:39 2008 -0800
+@@ -1252,3 +1252,37 @@
+   return 0;
+ }
+ 
++/*
++ int my_timer(ulonglong *ltime, ulonglong frequency)
++
++ For performance measurement this function returns the number
++ of microseconds since the epoch (SVr4, BSD 4.3, POSIX 1003.1-2001)
++ or system start (Windows platforms).
++
++ For windows platforms frequency value (obtained via 
++ QueryPerformanceFrequency) has to be specified. The global frequency
++ value is set in mysqld.cc. 
++
++ If Windows platform doesn't support QueryPerformanceFrequency we will
++ obtain the time via GetClockCount, which supports microseconds only.
++*/
++
++ulonglong my_timer(ulonglong *ltime, ulonglong frequency)
++{
++  ulonglong newtime= 0;
++#ifdef __WIN__
++  if (frequency) 
++  {
++    QueryPerformanceCounter((LARGE_INTEGER *)&newtime);
++    newtime/= (frequency * 1000000);
++  } else
++    newtime= (GetTickCount() * 1000; /* GetTickCount only returns milliseconds */
++#else
++  struct timeval t;
++  if (gettimeofday(&t, NULL) != -1)
++    newtime= (ulonglong)t.tv_sec * 1000000 + t.tv_usec;
++#endif
++  if (ltime)
++    *ltime= newtime;
++  return newtime;
++}
+diff -r 25523be1816e sql/filesort.cc
+--- a/sql/filesort.cc	Mon Dec 22 00:25:06 2008 -0800
++++ b/sql/filesort.cc	Mon Dec 22 00:26:39 2008 -0800
+@@ -180,6 +180,7 @@
+   {
+     statistic_increment(thd->status_var.filesort_scan_count, &LOCK_status);
+   }
++  thd->query_plan_flags|= QPLAN_FILESORT;
+ #ifdef CAN_TRUST_RANGE
+   if (select && select->quick && select->quick->records > 0L)
+   {
+@@ -245,6 +246,7 @@
+   }
+   else
+   {
++    thd->query_plan_flags|= QPLAN_FILESORT_DISK;
+     if (table_sort.buffpek && table_sort.buffpek_len < maxbuffer)
+     {
+       x_free(table_sort.buffpek);
+@@ -1116,6 +1118,7 @@
+ 
+   statistic_increment(current_thd->status_var.filesort_merge_passes,
+ 		      &LOCK_status);
++  current_thd->query_plan_fsort_passes++;
+   if (param->not_killable)
+   {
+     killed= &not_killable;
+diff -r 25523be1816e sql/ha_innodb.cc
+--- a/sql/ha_innodb.cc	Mon Dec 22 00:25:06 2008 -0800
++++ b/sql/ha_innodb.cc	Mon Dec 22 00:26:39 2008 -0800
+@@ -1,3 +1,4 @@
++
+ /* Copyright (C) 2000-2005 MySQL AB & Innobase Oy
+ 
+    This program is free software; you can redistribute it and/or modify
+@@ -805,9 +806,34 @@
+ 		trx->check_unique_secondary = TRUE;
+ 	}
+ 
++	if (thd->variables.log_slow_verbosity & SLOG_V_INNODB) {
++		trx->take_stats = TRUE;
++	} else {
++		trx->take_stats = FALSE;
++	}
++
+ 	return(trx);
+ }
+ 
++/*************************************************************************
++Gets current trx. */
++extern "C"
++trx_t*
++innobase_get_trx()
++{
++	THD *thd=current_thd;
++	if (likely(thd != 0)) {
++		return((trx_t*) thd->ha_data[innobase_hton.slot]);
++	} else {
++		return(NULL);
++	}
++}
++
++void
++innobase_update_var_slow_log()
++{
++	srv_slow_log = (ibool) opt_slow_log;
++}
+ 
+ /*************************************************************************
+ Construct ha_innobase handler. */
+@@ -1309,6 +1335,8 @@
+ 	}
+ 
+ 	/* -------------- Log files ---------------------------*/
++
++	srv_slow_log = (ibool) opt_slow_log;
+ 
+ 	/* The default dir for log files is the datadir of MySQL */
+ 
+@@ -4673,6 +4701,12 @@
+ 		trx->check_unique_secondary = FALSE;
+ 	}
+ 
++	if (thd->variables.log_slow_verbosity & SLOG_V_INNODB) {
++		trx->take_stats = TRUE;
++	} else {
++		trx->take_stats = FALSE;
++	}
++
+ 	if (lower_case_table_names) {
+ 		srv_lower_case_table_names = TRUE;
+ 	} else {
+@@ -4938,6 +4972,12 @@
+ 		trx->check_unique_secondary = FALSE;
+ 	}
+ 
++	if (thd->variables.log_slow_verbosity & SLOG_V_INNODB) {
++		trx->take_stats = TRUE;
++	} else {
++		trx->take_stats = FALSE;
++	}
++
+ 	name_len = strlen(name);
+ 
+ 	assert(name_len < 1000);
+@@ -5025,6 +5065,12 @@
+ 		trx->check_foreigns = FALSE;
+ 	}
+ 
++	if (current_thd->variables.log_slow_verbosity & SLOG_V_INNODB) {
++		trx->take_stats = TRUE;
++	} else {
++		trx->take_stats = FALSE;
++	}
++
+   	error = row_drop_database_for_mysql(namebuf, trx);
+ 	my_free(namebuf, MYF(0));
+ 
+@@ -5089,6 +5135,12 @@
+ 
+ 	if (current_thd->options & OPTION_NO_FOREIGN_KEY_CHECKS) {
+ 		trx->check_foreigns = FALSE;
++	}
++
++	if (current_thd->variables.log_slow_verbosity & SLOG_V_INNODB) {
++		trx->take_stats = TRUE;
++	} else {
++		trx->take_stats = FALSE;
+ 	}
+ 
+ 	name_len1 = strlen(from);
+@@ -6098,6 +6150,7 @@
+ {
+ 	row_prebuilt_t* prebuilt = (row_prebuilt_t*) innobase_prebuilt;
+ 	trx_t*		trx;
++	int i;
+ 
+   	DBUG_ENTER("ha_innobase::external_lock");
+ 	DBUG_PRINT("enter",("lock_type: %d", lock_type));
+@@ -6221,7 +6274,24 @@
+ 
+ 	if (trx->n_mysql_tables_in_use == 0) {
+ 
+-	        trx->mysql_n_tables_locked = 0;
++		current_thd->innodb_was_used = TRUE;
++		current_thd->innodb_io_reads += trx->io_reads;
++		current_thd->innodb_io_read += trx->io_read;
++		current_thd->innodb_io_reads_wait_timer += trx->io_reads_wait_timer;
++		current_thd->innodb_lock_que_wait_timer += trx->lock_que_wait_timer;
++		current_thd->innodb_innodb_que_wait_timer += trx->innodb_que_wait_timer;
++                current_thd->innodb_page_access += trx->distinct_page_access;
++
++		trx->io_reads = 0;
++		trx->io_read = 0;
++		trx->io_reads_wait_timer = 0;
++		trx->lock_que_wait_timer = 0;
++		trx->innodb_que_wait_timer = 0;
++		trx->distinct_page_access = 0;
++		if (trx->distinct_page_access_hash)
++			memset(trx->distinct_page_access_hash, 0, DPAH_SIZE);
++
++    		trx->mysql_n_tables_locked = 0;
+ 		prebuilt->used_in_HANDLER = FALSE;
+ 
+ 		if (!(thd->options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN))) {
+diff -r 25523be1816e sql/ha_innodb.h
+--- a/sql/ha_innodb.h	Mon Dec 22 00:25:06 2008 -0800
++++ b/sql/ha_innodb.h	Mon Dec 22 00:26:39 2008 -0800
+@@ -266,6 +266,8 @@
+ 
+ int innobase_start_trx_and_assign_read_view(THD* thd);
+ 
++void innobase_update_var_slow_log();
++
+ /***********************************************************************
+ This function is used to prepare X/Open XA distributed transaction   */
+ 
+diff -r 25523be1816e sql/log.cc
+--- a/sql/log.cc	Mon Dec 22 00:25:06 2008 -0800
++++ b/sql/log.cc	Mon Dec 22 00:26:39 2008 -0800
+@@ -2229,11 +2229,12 @@
+ */
+ 
+ bool MYSQL_LOG::write(THD *thd,const char *query, uint query_length,
+-		      time_t query_start_arg)
++		      time_t query_start_arg, ulonglong query_start_timer)
+ {
+   bool error=0;
+   time_t current_time;
+-  if (!is_open())
++  ulonglong current_timer;
++  if (!opt_slow_log || !is_open())
+     return 0;
+   DBUG_ENTER("MYSQL_LOG::write");
+ 
+@@ -2243,7 +2244,8 @@
+     int tmp_errno=0;
+     char buff[80],*end;
+     end=buff;
+-    if (!(thd->options & OPTION_UPDATE_LOG))
++    if (!(thd->options & OPTION_UPDATE_LOG) &&
++        !(thd->slave_thread && opt_log_slow_slave_statements))
+     {
+       VOID(pthread_mutex_unlock(&LOCK_log));
+       DBUG_RETURN(0);
+@@ -2273,22 +2275,72 @@
+       if (my_b_printf(&log_file, "# User@Host: %s[%s] @ %s [%s]\n",
+                       sctx->priv_user ?
+                       sctx->priv_user : "",
+-                      sctx->user ? sctx->user : "",
++                      sctx->user ? sctx->user : (thd->slave_thread ? "SQL_SLAVE" : ""),
+                       sctx->host ? sctx->host : "",
+                       sctx->ip ? sctx->ip : "") ==
+           (uint) -1)
+         tmp_errno=errno;
+     }
+-    if (query_start_arg)
++    if (query_start_timer)
+     {
++      char buf[5][20];
++      ulonglong current_timer= my_timer(&current_timer, frequency);
++      snprintf(buf[0], 20, "%.6f", (current_timer ? (current_timer - query_start_timer):0) / 1000000.0);
++      snprintf(buf[1], 20, "%.6f", (thd->timer_after_lock - query_start_timer) / 1000000.0);
++      if (!query_length)
++      {
++        thd->sent_row_count= thd->examined_row_count= 0;
++        thd->row_count= 0;
++        thd->innodb_was_used= FALSE;
++        thd->query_plan_flags= QPLAN_NONE;
++        thd->query_plan_fsort_passes= 0;
++      }
++
+       /* For slow query log */
+       if (my_b_printf(&log_file,
+-                      "# Query_time: %lu  Lock_time: %lu  Rows_sent: %lu  Rows_examined: %lu\n",
+-                      (ulong) (current_time - query_start_arg),
+-                      (ulong) (thd->time_after_lock - query_start_arg),
++                      "# Thread_id: %lu  Schema: %s\n" \
++                      "# Query_time: %s  Lock_time: %s  Rows_sent: %lu  Rows_examined: %lu  Rows_affected: %lu  Rows_read: %lu\n", 
++                      (ulong) thd->thread_id, (thd->db ? thd->db : ""),
++                      buf[0], buf[1],
+                       (ulong) thd->sent_row_count,
+-                      (ulong) thd->examined_row_count) == (uint) -1)
++                      (ulong) thd->examined_row_count,
++                      ((long) thd->row_count_func > 0 ) ? (ulong) thd->row_count_func : 0,
++                      (ulong) thd->row_count) == (uint) -1)
+         tmp_errno=errno;
++      if ((thd->variables.log_slow_verbosity & SLOG_V_QUERY_PLAN) &&
++           my_b_printf(&log_file,
++                      "# QC_Hit: %s  Full_scan: %s  Full_join: %s  Tmp_table: %s  Tmp_table_on_disk: %s\n" \
++                      "# Filesort: %s  Filesort_on_disk: %s  Merge_passes: %lu\n",
++                      ((thd->query_plan_flags & QPLAN_QC) ? "Yes" : "No"),
++                      ((thd->query_plan_flags & QPLAN_FULL_SCAN) ? "Yes" : "No"),
++                      ((thd->query_plan_flags & QPLAN_FULL_JOIN) ? "Yes" : "No"),
++                      ((thd->query_plan_flags & QPLAN_TMP_TABLE) ? "Yes" : "No"),
++                      ((thd->query_plan_flags & QPLAN_TMP_DISK) ? "Yes" : "No"),
++                      ((thd->query_plan_flags & QPLAN_FILESORT) ? "Yes" : "No"),
++                      ((thd->query_plan_flags & QPLAN_FILESORT_DISK) ? "Yes" : "No"),
++                      thd->query_plan_fsort_passes) == (uint) -1)
++        tmp_errno=errno;
++      if ((thd->variables.log_slow_verbosity & SLOG_V_INNODB) && thd->innodb_was_used)
++      {
++        snprintf(buf[2], 20, "%.6f", thd->innodb_io_reads_wait_timer / 1000000.0);
++        snprintf(buf[3], 20, "%.6f", thd->innodb_lock_que_wait_timer / 1000000.0);
++        snprintf(buf[4], 20, "%.6f", thd->innodb_innodb_que_wait_timer / 1000000.0);
++        if (my_b_printf(&log_file,
++                        "#   InnoDB_IO_r_ops: %lu  InnoDB_IO_r_bytes: %lu  InnoDB_IO_r_wait: %s\n" \
++                        "#   InnoDB_rec_lock_wait: %s  InnoDB_queue_wait: %s\n" \
++                        "#   InnoDB_pages_distinct: %lu\n",
++                        (ulong) thd->innodb_io_reads,
++                        (ulong) thd->innodb_io_read,
++                        buf[2], buf[3], buf[4],
++                        (ulong) thd->innodb_page_access) == (uint) -1)
++          tmp_errno=errno;
++      } 
++      else
++      {
++        if ((thd->variables.log_slow_verbosity & SLOG_V_INNODB) &&
++            my_b_printf(&log_file,"# No InnoDB statistics available for this query\n") == (uint) -1)
++          tmp_errno=errno;
++      }
+     }
+     if (thd->db && strcmp(thd->db,db))
+     {						// Database changed
+diff -r 25523be1816e sql/log_event.cc
+--- a/sql/log_event.cc	Mon Dec 22 00:25:06 2008 -0800
++++ b/sql/log_event.cc	Mon Dec 22 00:26:39 2008 -0800
+@@ -2039,6 +2039,7 @@
+       /* Execute the query (note that we bypass dispatch_command()) */
+       const char* found_semicolon= NULL;
+       mysql_parse(thd, thd->query, thd->query_length, &found_semicolon);
++      log_slow_statement(thd);
+ 
+     }
+     else
+diff -r 25523be1816e sql/mysql_priv.h
+--- a/sql/mysql_priv.h	Mon Dec 22 00:25:06 2008 -0800
++++ b/sql/mysql_priv.h	Mon Dec 22 00:26:39 2008 -0800
+@@ -489,6 +489,78 @@
+ #define WEEK_FIRST_WEEKDAY   4
+ 
+ #define STRING_BUFFER_USUAL_SIZE 80
++
++/* Slow log */
++
++struct msl_opts
++{
++  ulong val;
++  const char *name;
++};
++
++#define SLOG_V_MICROTIME      1 << 0
++#define SLOG_V_QUERY_PLAN     1 << 1
++#define SLOG_V_INNODB         1 << 2
++/* ... */
++#define SLOG_V_INVALID        1 << 31
++#define SLOG_V_NONE           SLOG_V_MICROTIME
++
++static const struct msl_opts slog_verb[]= 
++{
++  /* Basic flags */
++
++  { SLOG_V_MICROTIME, "microtime" },
++  { SLOG_V_QUERY_PLAN, "query_plan" },
++  { SLOG_V_INNODB, "innodb" },
++
++  /* End of baisc flags */
++
++  { 0, "" },
++
++  /* Complex flags */
++
++  { SLOG_V_MICROTIME, "minimal" },
++  { SLOG_V_MICROTIME|SLOG_V_QUERY_PLAN, "standard" },
++  { SLOG_V_MICROTIME|SLOG_V_QUERY_PLAN|SLOG_V_INNODB, "full" },
++
++  /* End of complex flags */
++
++  { SLOG_V_INVALID, (char *)0 }
++};
++
++#define QPLAN_NONE            0
++#define QPLAN_QC              1 << 0
++#define QPLAN_QC_NO           1 << 1
++#define QPLAN_FULL_SCAN       1 << 2
++#define QPLAN_FULL_JOIN       1 << 3
++#define QPLAN_TMP_TABLE       1 << 4
++#define QPLAN_TMP_DISK        1 << 5
++#define QPLAN_FILESORT        1 << 6
++#define QPLAN_FILESORT_DISK   1 << 7
++/* ... */
++#define QPLAN_MAX             1 << 31
++
++#define SLOG_F_QC_NO          QPLAN_QC_NO
++#define SLOG_F_FULL_SCAN      QPLAN_FULL_SCAN
++#define SLOG_F_FULL_JOIN      QPLAN_FULL_JOIN
++#define SLOG_F_TMP_TABLE      QPLAN_TMP_TABLE
++#define SLOG_F_TMP_DISK       QPLAN_TMP_DISK
++#define SLOG_F_FILESORT       QPLAN_FILESORT
++#define SLOG_F_FILESORT_DISK  QPLAN_FILESORT_DISK
++#define SLOG_F_INVALID        1 << 31
++#define SLOG_F_NONE           0
++
++static const struct msl_opts slog_filter[]= 
++{
++  { SLOG_F_QC_NO,         "qc_miss" },
++  { SLOG_F_FULL_SCAN,     "full_scan" },
++  { SLOG_F_FULL_JOIN,     "full_join" },
++  { SLOG_F_TMP_TABLE,     "tmp_table" },
++  { SLOG_F_TMP_DISK,      "tmp_table_on_disk" },
++  { SLOG_F_FILESORT,      "filesort" },
++  { SLOG_F_FILESORT_DISK, "filesort_on_disk" },
++  { SLOG_F_INVALID,       (char *)0 }
++};
+ 
+ enum enum_parsing_place
+ {
+@@ -1345,6 +1417,7 @@
+ extern bool using_update_log, opt_large_files, server_id_supplied;
+ extern bool opt_update_log, opt_bin_log, opt_error_log;
+ extern my_bool opt_log, opt_slow_log, opt_log_queries_not_using_indexes;
++extern char *opt_slow_logname;
+ extern bool opt_disable_networking, opt_skip_show_db;
+ extern my_bool opt_character_set_client_handshake;
+ extern bool volatile abort_loop, shutdown_in_progress, grant_option;
+@@ -1356,7 +1429,8 @@
+ extern my_bool opt_enable_named_pipe, opt_sync_frm, opt_allow_suspicious_udfs;
+ extern my_bool opt_secure_auth;
+ extern char* opt_secure_file_priv;
+-extern my_bool opt_log_slow_admin_statements;
++extern my_bool opt_log_slow_admin_statements, opt_log_slow_slave_statements;
++extern my_bool opt_use_global_long_query_time;
+ extern my_bool sp_automatic_privileges, opt_noacl;
+ extern my_bool opt_old_style_user_limits, trust_function_creators;
+ extern uint opt_crash_binlog_innodb;
+diff -r 25523be1816e sql/mysqld.cc
+--- a/sql/mysqld.cc	Mon Dec 22 00:25:06 2008 -0800
++++ b/sql/mysqld.cc	Mon Dec 22 00:26:39 2008 -0800
+@@ -175,7 +175,6 @@
+ static void getvolumename();
+ static void getvolumeID(BYTE *volumeName);
+ #endif /* __NETWARE__ */
+-
+ 
+ #ifdef _AIX41
+ int initgroups(const char *,unsigned int);
+@@ -409,10 +408,13 @@
+ my_bool opt_secure_auth= 0;
+ char* opt_secure_file_priv= 0;
+ my_bool opt_log_slow_admin_statements= 0;
++my_bool opt_log_slow_slave_statements= 0;
++my_bool opt_use_global_long_query_time= 0;
+ my_bool lower_case_file_system= 0;
+ my_bool opt_large_pages= 0;
+ uint    opt_large_page_size= 0;
+ my_bool opt_old_style_user_limits= 0, trust_function_creators= 0;
++char* opt_slow_logname= 0;
+ /*
+   True if there is at least one per-hour limit for some user, so we should
+   check them before each query (and possibly reset counters when hour is
+@@ -507,6 +508,7 @@
+ Ge_creator ge_creator;
+ Le_creator le_creator;
+ 
++ulonglong frequency= 0;
+ 
+ FILE *bootstrap_file;
+ int bootstrap_error;
+@@ -584,7 +586,7 @@
+ static int cleanup_done;
+ static ulong opt_specialflag, opt_myisam_block_size;
+ static char *opt_logname, *opt_update_logname, *opt_binlog_index_name;
+-static char *opt_slow_logname, *opt_tc_heuristic_recover;
++static char *opt_tc_heuristic_recover;
+ static char *mysql_home_ptr, *pidfile_name_ptr;
+ static char **defaults_argv;
+ static char *opt_bin_logname;
+@@ -3655,6 +3657,8 @@
+       unireg_abort(1);
+     }
+   }
++  if (!QueryPerformanceFrequency((LARGE_INTEGER *)&frequency))
++    frequency= 0;
+ #endif /* __WIN__ */
+ 
+   if (init_common_variables(MYSQL_CONFIG_NAME,
+@@ -4901,7 +4905,7 @@
+   OPT_INTERACTIVE_TIMEOUT, OPT_JOIN_BUFF_SIZE,
+   OPT_KEY_BUFFER_SIZE, OPT_KEY_CACHE_BLOCK_SIZE,
+   OPT_KEY_CACHE_DIVISION_LIMIT, OPT_KEY_CACHE_AGE_THRESHOLD,
+-  OPT_LONG_QUERY_TIME,
++  OPT_LONG_QUERY_TIME, OPT_MIN_EXAMINED_ROW_LIMIT,
+   OPT_LOWER_CASE_TABLE_NAMES, OPT_MAX_ALLOWED_PACKET,
+   OPT_MAX_BINLOG_CACHE_SIZE, OPT_MAX_BINLOG_SIZE,
+   OPT_MAX_CONNECTIONS, OPT_MAX_CONNECT_ERRORS,
+@@ -4992,11 +4996,18 @@
+   OPT_TIMED_MUTEXES,
+   OPT_OLD_STYLE_USER_LIMITS,
+   OPT_LOG_SLOW_ADMIN_STATEMENTS,
++  OPT_LOG_SLOW_SLAVE_STATEMENTS,
++  OPT_LOG_SLOW_RATE_LIMIT,
++  OPT_LOG_SLOW_VERBOSITY,
++  OPT_LOG_SLOW_FILTER,
+   OPT_TABLE_LOCK_WAIT_TIMEOUT,
+   OPT_PLUGIN_DIR,
+   OPT_PORT_OPEN_TIMEOUT,
+   OPT_MERGE,
+   OPT_PROFILING,
++  OPT_SLOW_LOG,
++  OPT_SLOW_QUERY_LOG_FILE,
++  OPT_USE_GLOBAL_LONG_QUERY_TIME,
+   OPT_INNODB_ROLLBACK_ON_TIMEOUT,
+   OPT_SECURE_FILE_PRIV,
+   OPT_KEEP_FILES_ON_CREATE,
+@@ -5386,8 +5396,17 @@
+    (gptr*) &opt_log_slow_admin_statements,
+    (gptr*) &opt_log_slow_admin_statements,
+    0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
++  {"log-slow-slave-statements", OPT_LOG_SLOW_SLAVE_STATEMENTS,
++   "Log slow replicated statements to the slow log if it is open.",
++   (gptr*) &opt_log_slow_slave_statements,
++   (gptr*) &opt_log_slow_slave_statements,
++   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
+   {"log-slow-queries", OPT_SLOW_QUERY_LOG,
+     "Log slow queries to this log file. Defaults logging to hostname-slow.log file. Must be enabled to activate other slow log options.",
++   (gptr*) &opt_slow_logname, (gptr*) &opt_slow_logname, 0, GET_STR, OPT_ARG,
++   0, 0, 0, 0, 0, 0},
++  {"slow_query_log_file", OPT_SLOW_QUERY_LOG_FILE,
++    "Log slow queries to given log file. Defaults logging to hostname-slow.log. Must be enabled to activate other slow log options.",
+    (gptr*) &opt_slow_logname, (gptr*) &opt_slow_logname, 0, GET_STR, OPT_ARG,
+    0, 0, 0, 0, 0, 0},
+   {"log-tc", OPT_LOG_TC,
+@@ -5753,6 +5772,9 @@
+    "Tells the slave thread to continue replication when a query returns an error from the provided list.",
+    0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
+ #endif
++  {"slow-query-log", OPT_SLOW_LOG,
++   "Enable|disable slow query log", (gptr*) &opt_slow_log,
++   (gptr*) &opt_slow_log, 0, GET_BOOL, OPT_ARG, 0, 0, 0, 0, 0, 0},
+   {"socket", OPT_SOCKET, "Socket file to use for connection.",
+    (gptr*) &mysqld_unix_port, (gptr*) &mysqld_unix_port, 0, GET_STR,
+    REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
+@@ -6055,11 +6077,31 @@
+    (gptr*) 0,
+    0, (GET_ULONG | GET_ASK_ADDR) , REQUIRED_ARG, 100,
+    1, 100, 0, 1, 0},
+-  {"long_query_time", OPT_LONG_QUERY_TIME,
+-   "Log all queries that have taken more than long_query_time seconds to execute to file.",
+-   (gptr*) &global_system_variables.long_query_time,
+-   (gptr*) &max_system_variables.long_query_time, 0, GET_ULONG,
+-   REQUIRED_ARG, 10, 1, LONG_TIMEOUT, 0, 1, 0},
++  {"log_slow_filter", OPT_LOG_SLOW_FILTER,
++    "Log only the queries that followed certain execution plan. Multiple flags allowed in a comma-separated string. [qc_miss, full_scan, full_join, tmp_table, tmp_table_on_disk, filesort, filesort_on_disk]",
++    0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, SLOG_F_NONE, 0, 0},
++  {"log_slow_rate_limit", OPT_LOG_SLOW_RATE_LIMIT,
++    "Rate limit statement writes to slow log to only those from every (1/log_slow_rate_limit) session.",
++    (gptr*) &global_system_variables.log_slow_rate_limit,
++    (gptr*) &max_system_variables.log_slow_rate_limit, 0, GET_ULONG,
++    REQUIRED_ARG, 1, 1, LONG_MAX, 0, 1L, 0},
++  {"log_slow_verbosity", OPT_LOG_SLOW_VERBOSITY,
++    "Choose how verbose the messages to your slow log will be. Multiple flags allowed in a comma-separated string. [microtime, query_plan, innodb]",
++    0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, SLOG_V_MICROTIME, 0, 0},
++   {"long_query_time", OPT_LONG_QUERY_TIME,
++    "Log all queries that have taken more than long_query_time seconds to execute to file.",
++    (gptr*) &global_system_variables.long_query_time,
++    (gptr*) &max_system_variables.long_query_time, 0, GET_DOUBLE,
++    REQUIRED_ARG, 10000000, 0, LONG_TIMEOUT * 1000000, 0, 1, 0},
++  {"min_examined_row_limit", OPT_MIN_EXAMINED_ROW_LIMIT,
++    "Don't log queries which examine less than min_examined_row_limit rows to file.",
++    (gptr*) &global_system_variables.min_examined_row_limit,
++    (gptr*) &max_system_variables.min_examined_row_limit, 0, GET_ULONG,
++    REQUIRED_ARG, 0, 0, LONG_MAX, 0, 1L, 0},
++  {"use_global_long_query_time", OPT_USE_GLOBAL_LONG_QUERY_TIME,
++   "Control always use global long_query_time or local long_query_time.",
++   (gptr*) &opt_use_global_long_query_time, (gptr*) &opt_use_global_long_query_time,
++   0, GET_BOOL, NO_ARG, 0, 0, 1, 0, 1, 0},
+   {"lower_case_table_names", OPT_LOWER_CASE_TABLE_NAMES,
+    "If set to 1 table names are stored in lowercase on disk and table names will be case-insensitive.  Should be set to 2 if you are using a case insensitive file system",
+    (gptr*) &lower_case_table_names,
+@@ -6835,7 +6873,11 @@
+   global_system_variables.max_join_size= (ulonglong) HA_POS_ERROR;
+   max_system_variables.max_join_size=   (ulonglong) HA_POS_ERROR;
+   global_system_variables.old_passwords= 0;
+-
++  global_system_variables.long_query_time = 10000000;
++  max_system_variables.long_query_time = LONG_TIMEOUT * 1000000;
++  global_system_variables.log_slow_verbosity= SLOG_V_MICROTIME;
++  global_system_variables.log_slow_filter= SLOG_F_NONE;
++  
+   /*
+     Default behavior for 4.1 and 5.0 is to treat NULL values as unequal
+     when collecting index statistics for MyISAM tables.
+@@ -7296,6 +7338,35 @@
+   case OPT_BOOTSTRAP:
+     opt_noacl=opt_bootstrap=1;
+     break;
++  case OPT_LOG_SLOW_FILTER:
++    if ((global_system_variables.log_slow_filter= 
++          msl_flag_resolve_by_name(slog_filter, argument,
++                                   SLOG_F_NONE, SLOG_F_INVALID)) == SLOG_F_INVALID)
++    {
++      fprintf(stderr,"Invalid argument in log_slow_filter: %s\n", argument);
++      exit(1);
++    }
++    break;
++  case OPT_LOG_SLOW_VERBOSITY:
++    if ((global_system_variables.log_slow_verbosity= 
++         msl_flag_resolve_by_name(slog_verb, argument,
++                                  SLOG_V_NONE, SLOG_V_INVALID)) == SLOG_V_INVALID)
++    {
++      fprintf(stderr,"Invalid argument in log_slow_verbosity: %s\n", argument);
++      exit(1);
++    }
++    break;
++  case OPT_LONG_QUERY_TIME:
++  {
++    double doubleslow = strtod(argument,NULL);
++    if (doubleslow < 0 || doubleslow > (LONG_TIMEOUT))
++    {
++      fprintf(stderr,"Out of range long_query_time value: %s\n", argument);
++      exit(1);
++    }
++    global_system_variables.long_query_time = (ulonglong) (doubleslow * 1000000);
++    break;
++  }
+   case OPT_STORAGE_ENGINE:
+   {
+     if ((enum db_type)((global_system_variables.table_type=
+@@ -7628,10 +7699,14 @@
+   if (opt_bdb)
+     sql_print_warning("this binary does not contain BDB storage engine");
+ #endif
+-  if ((opt_log_slow_admin_statements || opt_log_queries_not_using_indexes) &&
++  if ((opt_log_slow_admin_statements || opt_log_queries_not_using_indexes ||
++        opt_log_slow_slave_statements) &&
+       !opt_slow_log)
+-    sql_print_warning("options --log-slow-admin-statements and --log-queries-not-using-indexes have no effect if --log-slow-queries is not set");
+-
++  {
++    sql_print_warning("options --log-slow-admin-statements, --log-slow-slave-statements and --log-queries-not-using-indexes have no effect if --log-slow-queries is not set");
++    opt_log_slow_slave_statements= FALSE;
++  }
++  
+   if (argc > 0)
+   {
+     fprintf(stderr, "%s: Too many arguments (first extra is '%s').\nUse --help to get a list of available options\n", my_progname, *argv);
+diff -r 25523be1816e sql/set_var.cc
+--- a/sql/set_var.cc	Mon Dec 22 00:25:06 2008 -0800
++++ b/sql/set_var.cc	Mon Dec 22 00:26:39 2008 -0800
+@@ -217,9 +217,13 @@
+   sys_log_queries_not_using_indexes("log_queries_not_using_indexes",
+                                     &opt_log_queries_not_using_indexes);
+ sys_var_thd_ulong	sys_log_warnings("log_warnings", &SV::log_warnings);
+-sys_var_thd_ulong	sys_long_query_time("long_query_time",
++sys_var_thd_microtime  sys_long_query_time("long_query_time",
+ 					     &SV::long_query_time);
++sys_var_bool_ptr	sys_use_global_long_query_time("use_global_long_query_time",
++                                                       &opt_use_global_long_query_time);
+ sys_var_bool_const_ptr sys_log_slow("log_slow_queries", &opt_slow_log);
++sys_var_log_slow	sys_slow_query_log("slow_query_log", &opt_slow_log);
++sys_var_const_str_ptr	sys_slow_query_log_file("slow_query_log_file", &opt_slow_logname);
+ sys_var_thd_bool	sys_low_priority_updates("low_priority_updates",
+ 						 &SV::low_priority_updates,
+ 						 fix_low_priority_updates);
+@@ -283,6 +285,8 @@
+ 					   &SV::max_tmp_tables);
+ sys_var_long_ptr	sys_max_write_lock_count("max_write_lock_count",
+ 						 &max_write_lock_count);
++sys_var_thd_ulong	sys_min_examined_row_limit("min_examined_row_limit",
++					     &SV::min_examined_row_limit);
+ sys_var_thd_ulong       sys_multi_range_count("multi_range_count",
+                                               &SV::multi_range_count);
+ sys_var_long_ptr	sys_myisam_data_pointer_size("myisam_data_pointer_size",
+@@ -327,6 +331,20 @@
+ sys_var_bool_ptr	sys_relay_log_purge("relay_log_purge",
+                                             &relay_log_purge);
+ #endif
++sys_var_thd_ulong	sys_log_slow_rate_limit("log_slow_rate_limit",
++					     &SV::log_slow_rate_limit);
++sys_var_thd_msl_flag	sys_log_slow_filter("log_slow_filter",
++				       &SV::log_slow_filter,
++                                       SLOG_F_NONE,
++                                       SLOG_F_NONE,
++                                       SLOG_F_INVALID,
++                                       slog_filter);
++sys_var_thd_msl_flag	sys_log_slow_verbosity("log_slow_verbosity",
++				       &SV::log_slow_verbosity,
++                                       SLOG_V_NONE,
++                                       SLOG_V_MICROTIME,
++                                       SLOG_V_INVALID,
++                                       slog_verb);
+ sys_var_long_ptr	sys_rpl_recovery_rank("rpl_recovery_rank",
+ 					      &rpl_recovery_rank);
+ sys_var_long_ptr	sys_query_cache_size("query_cache_size",
+@@ -694,6 +712,10 @@
+   &sys_log_off,
+   &sys_log_queries_not_using_indexes,
+   &sys_log_slow,
++  &sys_log_slow_filter,
++  &sys_log_slow_rate_limit,
++  &sys_log_slow_verbosity,
++  &sys_use_global_long_query_time,
+   &sys_log_update,
+   &sys_log_warnings,
+   &sys_long_query_time,
+@@ -717,6 +738,7 @@
+   &sys_max_tmp_tables,
+   &sys_max_user_connections,
+   &sys_max_write_lock_count,
++  &sys_min_examined_row_limit,
+   &sys_multi_range_count,
+   &sys_myisam_data_pointer_size,
+   &sys_myisam_max_sort_file_size,
+@@ -770,6 +792,8 @@
+   &sys_slave_skip_counter,
+ #endif
+   &sys_slow_launch_time,
++  &sys_slow_query_log,
++  &sys_slow_query_log_file,
+   &sys_sort_buffer,
+   &sys_sql_big_tables,
+   &sys_sql_low_priority_updates,
+@@ -986,8 +1010,11 @@
+   {"log_slave_updates",       (char*) &opt_log_slave_updates,       SHOW_MY_BOOL},
+ #endif
+   {sys_log_slow.name,         (char*) &sys_log_slow,                SHOW_SYS},
++  {sys_log_slow_filter.name, (char*) &sys_log_slow_filter, SHOW_SYS},
++  {sys_log_slow_rate_limit.name, (char*) &sys_log_slow_rate_limit, SHOW_SYS},
++  {sys_log_slow_verbosity.name, (char*) &sys_log_slow_verbosity, SHOW_SYS},
+   {sys_log_warnings.name,     (char*) &sys_log_warnings,	    SHOW_SYS},
+-  {sys_long_query_time.name,  (char*) &sys_long_query_time, 	    SHOW_SYS},
++  {sys_long_query_time.name,  (char*) &sys_long_query_time, 	    SHOW_MICROTIME},
+   {sys_low_priority_updates.name, (char*) &sys_low_priority_updates, SHOW_SYS},
+   {"lower_case_file_system",  (char*) &lower_case_file_system,      SHOW_MY_BOOL},
+   {"lower_case_table_names",  (char*) &lower_case_table_names,      SHOW_INT},
+@@ -1014,6 +1041,7 @@
+   {sys_max_tmp_tables.name,	(char*) &sys_max_tmp_tables,	    SHOW_SYS},
+   {sys_max_user_connections.name,(char*) &sys_max_user_connections, SHOW_SYS},
+   {sys_max_write_lock_count.name, (char*) &sys_max_write_lock_count,SHOW_SYS},
++  {sys_min_examined_row_limit.name, (char*) &sys_min_examined_row_limit, SHOW_SYS},
+   {sys_multi_range_count.name,  (char*) &sys_multi_range_count,     SHOW_SYS},
+   {sys_myisam_data_pointer_size.name, (char*) &sys_myisam_data_pointer_size, SHOW_SYS},
+   {sys_myisam_max_sort_file_size.name, (char*) &sys_myisam_max_sort_file_size,
+@@ -1101,6 +1129,8 @@
+   {sys_slave_trans_retries.name,(char*) &sys_slave_trans_retries,   SHOW_SYS},
+ #endif
+   {sys_slow_launch_time.name, (char*) &sys_slow_launch_time,        SHOW_SYS},
++  {sys_slow_query_log.name,   (char*) &sys_slow_query_log,          SHOW_SYS},
++  {sys_slow_query_log_file.name,(char*) &sys_slow_query_log_file,   SHOW_SYS},
+ #ifdef HAVE_SYS_UN_H
+   {"socket",                  (char*) &mysqld_unix_port,             SHOW_CHAR_PTR},
+ #endif
+@@ -1141,6 +1171,7 @@
+   {sys_tx_isolation.name,     (char*) &sys_tx_isolation,	    SHOW_SYS},
+   {sys_updatable_views_with_limit.name,
+                               (char*) &sys_updatable_views_with_limit,SHOW_SYS},
++  {sys_use_global_long_query_time.name, (char*) &sys_use_global_long_query_time, SHOW_SYS},
+   {sys_version.name,          (char*) &sys_version,                 SHOW_SYS},
+ #ifdef HAVE_BERKELEY_DB
+   {sys_version_bdb.name,      (char*) &sys_version_bdb,             SHOW_SYS},
+@@ -1769,6 +1799,17 @@
+ }
+ 
+ 
++bool sys_var_thd_microtime::check(THD *thd, set_var *var)
++{
++  if (var->value->result_type() == DECIMAL_RESULT)
++    var->save_result.ulonglong_value= (ulonglong)(var->value->val_real() * 1000000);
++  else
++    var->save_result.ulonglong_value= (ulonglong)(var->value->val_int() * 1000000);
++
++  return 0;
++}
++
++
+ bool sys_var_thd_bool::update(THD *thd,  set_var *var)
+ {
+   if (var->type == OPT_GLOBAL)
+@@ -1924,6 +1965,19 @@
+     value= *(longlong*) value_ptr(thd, var_type, base);
+     pthread_mutex_unlock(&LOCK_global_system_variables);
+     return new Item_int(value);
++  }
++  case SHOW_MICROTIME:
++  {
++    longlong value;
++    char buff[80];
++    int len;
++
++    pthread_mutex_lock(&LOCK_global_system_variables);
++    value= *(longlong*) value_ptr(thd, var_type, base);
++    pthread_mutex_unlock(&LOCK_global_system_variables);
++
++    len = snprintf(buff, 80, "%f", ((double) value) / 1000000.0);
++    return new Item_float(buff,len);
+   }
+   case SHOW_HA_ROWS:
+   {
+@@ -2757,6 +2811,30 @@
+ }
+ 
+ 
++bool sys_var_log_slow::update(THD *thd, set_var *var)
++{
++  bool ret;
++
++  pthread_mutex_lock(&LOCK_global_system_variables);
++  if (var->save_result.ulong_value)
++  {
++    if(!mysql_slow_log.is_open())
++    {
++      mysql_slow_log.open_slow_log(opt_slow_logname);
++    }
++  }
++  pthread_mutex_unlock(&LOCK_global_system_variables);
++
++  ret = sys_var_bool_ptr::update(thd, var);
++
++#ifdef HAVE_INNOBASE_DB
++  innobase_update_var_slow_log();
++#endif
++
++  return(ret);
++}
++
++
+ #ifdef HAVE_REPLICATION
+ bool sys_var_slave_skip_counter::check(THD *thd, set_var *var)
+ {
+@@ -3519,6 +3597,191 @@
+ #endif
+ }
+ 
++/* Slow log stuff */
++
++ulong msl_option_resolve_by_name(const struct msl_opts *opts, const char *name, ulong len)
++{
++  ulong i;
++  
++  for (i=0; opts[i].name; i++)
++  {
++    if (!my_strnncoll(&my_charset_latin1,
++                      (const uchar *)name, len,
++                      (const uchar *)opts[i].name, strlen(opts[i].name)))
++      return opts[i].val;
++  }
++  return opts[i].val;
++}
++
++ulong msl_flag_resolve_by_name(const struct msl_opts *opts, const char *names_list, 
++                               const ulong none_val, const ulong invalid_val)
++{
++  const char *p, *e;
++  ulong val= none_val;
++  
++  if (!*names_list)
++    return val;
++  
++  for (p= e= names_list; ; e++)
++  {
++    ulong i;
++    
++    if (*e != ',' && *e)
++      continue;
++    for (i=0; opts[i].name; i++)
++    {
++      if (!my_strnncoll(&my_charset_latin1,
++                        (const uchar *)p, e - p,
++                        (const uchar *)opts[i].name, strlen(opts[i].name)))
++      {
++        val= val | opts[i].val;
++        break;
++      }
++    }
++    if (opts[i].val == invalid_val)
++      return invalid_val;
++    if (!*e)
++      break;
++    p= e + 1;
++  }
++  return val;
++}
++
++const char *msl_option_get_name(const struct msl_opts *opts, ulong val)
++{
++  for (ulong i=0; opts[i].name && opts[i].name[0]; i++)
++  {
++    if (opts[i].val == val)
++      return opts[i].name;
++  }
++  return "*INVALID*";
++}
++
++char *msl_flag_get_name(const struct msl_opts *opts, char *buf, ulong val)
++{
++  uint offset= 0;
++  
++  *buf= '\0';
++  for (ulong i=0; opts[i].name && opts[i].name[0]; i++)
++  {
++    if (opts[i].val & val)
++      offset+= snprintf(buf+offset, STRING_BUFFER_USUAL_SIZE - offset - 1,
++                        "%s%s", (offset ? "," : ""), opts[i].name);
++  }
++  return buf;
++}
++
++/****************************************************************************
++ Functions to handle log_slow_verbosity
++****************************************************************************/
++
++/* Based upon sys_var::check_enum() */
++
++bool sys_var_thd_msl_option::check(THD *thd, set_var *var)
++{
++  char buff[STRING_BUFFER_USUAL_SIZE];
++  String str(buff, sizeof(buff), &my_charset_latin1), *res;
++
++  if (var->value->result_type() == STRING_RESULT)
++  {
++    ulong verb= this->invalid_val;
++    if (!(res=var->value->val_str(&str)) ||
++	      (var->save_result.ulong_value=
++          (ulong) (verb= msl_option_resolve_by_name(this->opts, res->ptr(), res->length()))) == this->invalid_val)
++      goto err;
++    return 0;
++  }
++
++err:
++  my_error(ER_WRONG_ARGUMENTS, MYF(0), var->var->name);
++  return 1;
++}
++
++byte *sys_var_thd_msl_option::value_ptr(THD *thd, enum_var_type type,
++					LEX_STRING *base)
++{
++  ulong val;
++  val= ((type == OPT_GLOBAL) ? global_system_variables.*offset :
++        thd->variables.*offset);
++  const char *verbosity= msl_option_get_name(this->opts, val);
++  return (byte *) verbosity;
++}
++
++
++void sys_var_thd_msl_option::set_default(THD *thd, enum_var_type type)
++{
++  if (type == OPT_GLOBAL)
++    global_system_variables.*offset= (ulong) this->default_val;
++  else
++    thd->variables.*offset= (ulong) (global_system_variables.*offset);
++}
++
++
++bool sys_var_thd_msl_option::update(THD *thd, set_var *var)
++{
++  if (var->type == OPT_GLOBAL)
++    global_system_variables.*offset= var->save_result.ulong_value;
++  else
++    thd->variables.*offset= var->save_result.ulong_value;
++  return 0;
++}
++
++/****************************************************************************
++ Functions to handle log_slow_filter
++****************************************************************************/
++  
++/* Based upon sys_var::check_enum() */
++
++bool sys_var_thd_msl_flag::check(THD *thd, set_var *var)
++{
++  char buff[2 * STRING_BUFFER_USUAL_SIZE];
++  String str(buff, sizeof(buff), &my_charset_latin1), *res;
++
++  if (var->value->result_type() == STRING_RESULT)
++  {
++    ulong filter= this->none_val;
++    if (!(res=var->value->val_str(&str)) ||
++	 (var->save_result.ulong_value=
++          (ulong) (filter= msl_flag_resolve_by_name(this->flags, res->ptr(), this->none_val, 
++                                                    this->invalid_val))) == this->invalid_val)
++      goto err;
++    return 0;
++  }
++
++err:
++  my_error(ER_WRONG_ARGUMENTS, MYF(0), var->var->name);
++  return 1;
++}
++
++byte *sys_var_thd_msl_flag::value_ptr(THD *thd, enum_var_type type,
++					LEX_STRING *base)
++{
++  ulong val;
++  val= ((type == OPT_GLOBAL) ? global_system_variables.*offset :
++        thd->variables.*offset);
++  msl_flag_get_name(this->flags, this->flags_string, val);
++  return (byte *) this->flags_string;
++}
++
++
++void sys_var_thd_msl_flag::set_default(THD *thd, enum_var_type type)
++{
++  if (type == OPT_GLOBAL)
++    global_system_variables.*offset= (ulong) this->default_val;
++  else
++    thd->variables.*offset= (ulong) (global_system_variables.*offset);
++}
++
++
++bool sys_var_thd_msl_flag::update(THD *thd, set_var *var)
++{
++  if (var->type == OPT_GLOBAL)
++    global_system_variables.*offset= var->save_result.ulong_value;
++  else
++    thd->variables.*offset= var->save_result.ulong_value;
++  return 0;
++}
++
+ /****************************************************************************
+  Functions to handle table_type
+ ****************************************************************************/
+diff -r 25523be1816e sql/set_var.h
+--- a/sql/set_var.h	Mon Dec 22 00:25:06 2008 -0800
++++ b/sql/set_var.h	Mon Dec 22 00:26:39 2008 -0800
+@@ -132,6 +132,7 @@
+ };
+ 
+ 
++
+ class sys_var_ulonglong_ptr :public sys_var
+ {
+ public:
+@@ -168,6 +169,13 @@
+   bool check_update_type(Item_result type) { return 0; }
+ };
+ 
++class sys_var_log_slow :public sys_var_bool_ptr
++{
++public:
++  sys_var_log_slow(const char *name_arg, my_bool *value_arg)
++    :sys_var_bool_ptr(name_arg, value_arg) {}
++  bool update(THD *thd, set_var *var);
++};
+ 
+ class sys_var_bool_const_ptr : public sys_var
+ {
+@@ -340,7 +348,6 @@
+   }
+ };
+ 
+-
+ class sys_var_thd_ulong :public sys_var_thd
+ {
+   sys_check_func check_func;
+@@ -360,7 +367,6 @@
+   byte *value_ptr(THD *thd, enum_var_type type, LEX_STRING *base);
+ };
+ 
+-
+ class sys_var_thd_ha_rows :public sys_var_thd
+ {
+ public:
+@@ -377,7 +383,6 @@
+   SHOW_TYPE show_type() { return SHOW_HA_ROWS; }
+   byte *value_ptr(THD *thd, enum_var_type type, LEX_STRING *base);
+ };
+-
+ 
+ class sys_var_thd_ulonglong :public sys_var_thd
+ {
+@@ -407,6 +412,19 @@
+   }
+ };
+ 
++class sys_var_thd_microtime :public sys_var_thd_ulonglong
++{
++public:
++  sys_var_thd_microtime(const char *name_arg, ulonglong SV::*offset_arg)
++    :sys_var_thd_ulonglong(name_arg, offset_arg)
++  {}
++  SHOW_TYPE show_type() { return SHOW_MICROTIME; }
++  bool check(THD *thd, set_var *var);
++  bool check_update_type(Item_result type)
++  {
++    return type != INT_RESULT && type != DECIMAL_RESULT;
++  }
++};
+ 
+ class sys_var_thd_bool :public sys_var_thd
+ {
+@@ -477,6 +495,66 @@
+                                             ulong *length);
+ };
+ 
++
++class sys_var_thd_msl_option :public sys_var_thd
++{
++protected:
++  ulong SV::*offset;
++  const ulong none_val;
++  const ulong default_val;
++  const ulong invalid_val;
++  const struct msl_opts *opts;
++public:
++  sys_var_thd_msl_option(const char *name_arg, ulong SV::*offset_arg,
++                         const ulong none_val_arg,
++                         const ulong default_val_arg,
++                         const ulong invalid_val_arg,
++                         const struct msl_opts *opts_arg)
++    :sys_var_thd(name_arg), offset(offset_arg), none_val(none_val_arg),
++     default_val(default_val_arg), invalid_val(invalid_val_arg), 
++     opts(opts_arg)
++  {}
++  bool check(THD *thd, set_var *var);
++  SHOW_TYPE show_type() { return SHOW_CHAR; }
++  bool check_update_type(Item_result type)
++  {
++    return type != STRING_RESULT;		/* Only accept strings */
++  }
++  void set_default(THD *thd, enum_var_type type);
++  bool update(THD *thd, set_var *var);
++  byte *value_ptr(THD *thd, enum_var_type type, LEX_STRING *base);
++};
++
++
++class sys_var_thd_msl_flag :public sys_var_thd
++{
++protected:
++  char flags_string[2 * STRING_BUFFER_USUAL_SIZE];
++  ulong SV::*offset;
++  const ulong none_val;
++  const ulong default_val;
++  const ulong invalid_val;
++  const struct msl_opts *flags;
++public:
++  sys_var_thd_msl_flag(const char *name_arg, ulong SV::*offset_arg, 
++                       const ulong none_val_arg, 
++                       const ulong default_val_arg, 
++                       const ulong invalid_val_arg,
++                       const struct msl_opts *flags_arg)
++    :sys_var_thd(name_arg), offset(offset_arg), none_val(none_val_arg),
++     default_val(default_val_arg), invalid_val(invalid_val_arg), 
++     flags(flags_arg)
++  {}
++  bool check(THD *thd, set_var *var);
++  SHOW_TYPE show_type() { return SHOW_CHAR; }
++  bool check_update_type(Item_result type)
++  {
++    return type != STRING_RESULT;		/* Only accept strings */
++  }
++  void set_default(THD *thd, enum_var_type type);
++  bool update(THD *thd, set_var *var);
++  byte *value_ptr(THD *thd, enum_var_type type, LEX_STRING *base);
++};
+ 
+ class sys_var_thd_storage_engine :public sys_var_thd
+ {
+@@ -1087,3 +1165,11 @@
+ bool process_key_caches(int (* func) (const char *name, KEY_CACHE *));
+ void delete_elements(I_List<NAMED_LIST> *list,
+ 		     void (*free_element)(const char*, gptr));
++
++/* Slow log functions */
++
++ulong msl_option_resolve_by_name(const struct msl_opts *opts, const char *name, ulong len);
++ulong msl_flag_resolve_by_name(const struct msl_opts *opts, const char *names_list, 
++                               const ulong none_val, const ulong invalid_val);
++const char *msl_option_get_name(const struct msl_opts *opts, ulong val);
++char *msl_flag_get_name(const struct msl_opts *opts, char *buf, ulong val);
+diff -r 25523be1816e sql/slave.cc
+--- a/sql/slave.cc	Mon Dec 22 00:25:06 2008 -0800
++++ b/sql/slave.cc	Mon Dec 22 00:26:39 2008 -0800
+@@ -2925,6 +2925,12 @@
+     + MAX_LOG_EVENT_HEADER;  /* note, incr over the global not session var */
+   thd->slave_thread = 1;
+   set_slave_thread_options(thd);
++  if (opt_log_slow_slave_statements)
++  {
++    thd->enable_slow_log= TRUE;
++    /* Slave thread is excluded from rate limiting the slow log writes. */
++    thd->write_to_slow_log= TRUE;
++  }
+   thd->client_capabilities = CLIENT_LOCAL_FILES;
+   thd->real_id=pthread_self();
+   pthread_mutex_lock(&LOCK_thread_count);
+diff -r 25523be1816e sql/sql_cache.cc
+--- a/sql/sql_cache.cc	Mon Dec 22 00:25:06 2008 -0800
++++ b/sql/sql_cache.cc	Mon Dec 22 00:26:39 2008 -0800
+@@ -1341,6 +1341,7 @@
+ 
+   thd->limit_found_rows = query->found_rows();
+   thd->status_var.last_query_cost= 0.0;
++  thd->query_plan_flags|= QPLAN_QC;
+ 
+   BLOCK_UNLOCK_RD(query_block);
+   DBUG_RETURN(1);				// Result sent to client
+@@ -1348,6 +1349,7 @@
+ err_unlock:
+   STRUCT_UNLOCK(&structure_guard_mutex);
+ err:
++  thd->query_plan_flags|= QPLAN_QC_NO;
+   DBUG_RETURN(0);				// Query was not cached
+ }
+ 
+diff -r 25523be1816e sql/sql_class.cc
+--- a/sql/sql_class.cc	Mon Dec 22 00:25:06 2008 -0800
++++ b/sql/sql_class.cc	Mon Dec 22 00:26:39 2008 -0800
+@@ -188,7 +188,7 @@
+    lock_id(&main_lock_id),
+    user_time(0), in_sub_stmt(0), global_read_lock(0), is_fatal_error(0),
+    transaction_rollback_request(0), is_fatal_sub_stmt_error(0),
+-   rand_used(0), time_zone_used(0),
++   rand_used(0), time_zone_used(0), user_timer(0),
+    last_insert_id_used(0), last_insert_id_used_bin_log(0), insert_id_used(0),
+    clear_next_insert_id(0), in_lock_tables(0), bootstrap(0),
+    derived_tables_processing(FALSE), spcont(NULL),
+@@ -2224,6 +2224,12 @@
+   backup->cuted_fields=     cuted_fields;
+   backup->client_capabilities= client_capabilities;
+   backup->savepoints= transaction.savepoints;
++  backup->innodb_io_reads= innodb_io_reads;
++  backup->innodb_io_read= innodb_io_read;
++  backup->innodb_io_reads_wait_timer= innodb_io_reads_wait_timer;
++  backup->innodb_lock_que_wait_timer= innodb_lock_que_wait_timer;
++  backup->innodb_innodb_que_wait_timer= innodb_innodb_que_wait_timer;
++  backup->innodb_page_access= innodb_page_access;
+ 
+   if (!lex->requires_prelocking() || is_update_query(lex->sql_command))
+     options&= ~OPTION_BIN_LOG;
+@@ -2240,7 +2246,13 @@
+   sent_row_count= 0;
+   cuted_fields= 0;
+   transaction.savepoints= 0;
+-
++  innodb_io_reads= 0;
++  innodb_io_read= 0;
++  innodb_io_reads_wait_timer= 0;
++  innodb_lock_que_wait_timer= 0;
++  innodb_innodb_que_wait_timer= 0;
++  innodb_page_access= 0;
++  
+   /* Surpress OK packets in case if we will execute statements */
+   net.no_send_ok= TRUE;
+ }
+@@ -2293,6 +2305,12 @@
+   */
+   examined_row_count+= backup->examined_row_count;
+   cuted_fields+=       backup->cuted_fields;
++  innodb_io_reads+= backup->innodb_io_reads;
++  innodb_io_read+= backup->innodb_io_read;
++  innodb_io_reads_wait_timer+= backup->innodb_io_reads_wait_timer;
++  innodb_lock_que_wait_timer+= backup->innodb_lock_que_wait_timer;
++  innodb_innodb_que_wait_timer+= backup->innodb_innodb_que_wait_timer;
++  innodb_page_access+= backup->innodb_page_access;
+ }
+ 
+ 
+diff -r 25523be1816e sql/sql_class.h
+--- a/sql/sql_class.h	Mon Dec 22 00:25:06 2008 -0800
++++ b/sql/sql_class.h	Mon Dec 22 00:26:39 2008 -0800
+@@ -43,6 +43,7 @@
+ extern char internal_table_name[2];
+ extern char empty_c_string[1];
+ extern const char **errmesg;
++extern ulonglong frequency;
+ 
+ #define TC_LOG_PAGE_SIZE   8192
+ #define TC_LOG_MIN_SIZE    (3*TC_LOG_PAGE_SIZE)
+@@ -314,7 +321,7 @@
+   bool write(THD *thd, enum enum_server_command command,
+ 	     const char *format, ...) ATTRIBUTE_FORMAT(printf, 4, 5);
+   bool write(THD *thd, const char *query, uint query_length,
+-	     time_t query_start=0);
++	     time_t query_start=0, ulonglong query_start_timer=0);
+   bool write(Log_event* event_info); // binary log write
+   bool write(THD *thd, IO_CACHE *cache, Log_event *commit_event);
+ 
+@@ -520,13 +527,14 @@
+   ulong auto_increment_increment, auto_increment_offset;
+   ulong bulk_insert_buff_size;
+   ulong join_buff_size;
+-  ulong long_query_time;
++  ulonglong long_query_time;
+   ulong max_allowed_packet;
+   ulong max_error_count;
+   ulong max_length_for_sort_data;
+   ulong max_sort_length;
+   ulong max_tmp_tables;
+   ulong max_insert_delayed_threads;
++  ulong min_examined_row_limit;
+   ulong multi_range_count;
+   ulong myisam_repair_threads;
+   ulong myisam_sort_buff_size;
+@@ -542,10 +550,13 @@
+   ulong preload_buff_size;
+   ulong profiling_history_size;
+   ulong query_cache_type;
++  ulong log_slow_rate_limit;
+   ulong read_buff_size;
+   ulong read_rnd_buff_size;
+   ulong div_precincrement;
+   ulong sortbuff_size;
++  ulong log_slow_filter;
++  ulong log_slow_verbosity;
+   ulong table_type;
+   ulong tx_isolation;
+   ulong completion_type;
+@@ -1121,6 +1132,12 @@
+   uint in_sub_stmt;
+   bool enable_slow_log, insert_id_used, clear_next_insert_id;
+   bool last_insert_id_used;
++  ulong      innodb_io_reads;
++  ulonglong  innodb_io_read;
++  ulong      innodb_io_reads_wait_timer;
++  ulong      innodb_lock_que_wait_timer;
++  ulong      innodb_innodb_que_wait_timer;
++  ulong      innodb_page_access;
+   my_bool no_send_ok;
+   SAVEPOINT *savepoints;
+ };
+@@ -1177,6 +1194,11 @@
+ class THD :public Statement,
+            public Open_tables_state
+ {
++private:
++  inline ulonglong query_start_timer() { return start_timer; }
++  inline void set_timer()    { if (user_timer) start_timer=timer_after_lock=user_timer; else timer_after_lock=my_timer(&start_timer, frequency); }
++  inline void end_timer()    { my_timer(&start_timer, frequency); }
++  inline void lock_timer()   { my_timer(&timer_after_lock, frequency); }
+ public:
+   /*
+     Constant for THD::where initialization in the beginning of every query.
+@@ -1285,10 +1307,24 @@
+   */
+   const char *where;
+   time_t     start_time,time_after_lock,user_time;
++  ulonglong start_timer,timer_after_lock, user_timer;
+   time_t     connect_time,thr_create_time; // track down slow pthread_create
+   thr_lock_type update_lock_default;
+   Delayed_insert *di;
+ 
++  bool       write_to_slow_log;
++
++  bool       innodb_was_used;
++  ulong      innodb_io_reads;
++  ulonglong  innodb_io_read;
++  ulong      innodb_io_reads_wait_timer;
++  ulong      innodb_lock_que_wait_timer;
++  ulong      innodb_innodb_que_wait_timer;
++  ulong      innodb_page_access;
++
++  ulong      query_plan_flags;
++  ulong      query_plan_fsort_passes;
++  
+   /* <> 0 if we are inside of trigger or stored function. */
+   uint in_sub_stmt;
+ 
+@@ -1678,11 +1714,11 @@
+       sql_print_information("time() failed with %d", errno);
+   }
+ 
+-  inline time_t query_start() { query_start_used=1; return start_time; }
+-  inline void	set_time()    { if (user_time) start_time=time_after_lock=user_time; else { safe_time(&start_time); time_after_lock= start_time; }}
+-  inline void	end_time()    { safe_time(&start_time); }
+-  inline void	set_time(time_t t) { time_after_lock=start_time=user_time=t; }
+-  inline void	lock_time()   { safe_time(&time_after_lock); }
++  inline time_t query_start() { query_start_timer(); query_start_used=1; return start_time; }
++  inline void set_time()    { set_timer(); if (user_time) start_time=time_after_lock=user_time; else { safe_time(&start_time); time_after_lock= start_time; }}
++  inline void	end_time()    { end_timer(); safe_time(&start_time); }
++  inline void	set_time(time_t t) { set_timer(); time_after_lock=start_time=user_time=t; }
++  inline void	lock_time()   { lock_timer(); safe_time(&time_after_lock); }
+   inline void	insert_id(ulonglong id_arg)
+   {
+     last_insert_id= id_arg;
+diff -r 25523be1816e sql/sql_parse.cc
+--- a/sql/sql_parse.cc	Mon Dec 22 00:25:06 2008 -0800
++++ b/sql/sql_parse.cc	Mon Dec 22 00:26:39 2008 -0800
+@@ -20,6 +20,7 @@
+ #include <m_ctype.h>
+ #include <myisam.h>
+ #include <my_dir.h>
++#include <my_time.h>
+ 
+ #ifdef HAVE_INNOBASE_DB
+ #include "ha_innodb.h"
+@@ -1227,6 +1228,15 @@
+     my_net_set_read_timeout(net, thd->variables.net_read_timeout);
+     my_net_set_write_timeout(net, thd->variables.net_write_timeout);
+ 
++    /*
++      If rate limiting of slow log writes is enabled, decide whether to log this
++      new thread's queries or not. Uses extremely simple algorithm. :)
++    */
++    thd->write_to_slow_log= FALSE;
++    if (thd->variables.log_slow_rate_limit <= 1 || 
++        (thd->thread_id % thd->variables.log_slow_rate_limit) == 0)
++         thd->write_to_slow_log= TRUE;
++
+     while (!net->error && net->vio != 0 &&
+            !(thd->killed == THD::KILL_CONNECTION))
+     {
+@@ -2353,27 +2363,55 @@
+     return;                                     // Don't set time for sub stmt
+ 
+   start_of_query= thd->start_time;
++  ulonglong start_of_query_timer= thd->start_timer;
+   thd->end_time();				// Set start time
++
++
++  /* Follow the slow log filter configuration. */
++  if (thd->variables.log_slow_filter != SLOG_F_NONE && 
++      (!(thd->variables.log_slow_filter & thd->query_plan_flags) ||
++       ((thd->variables.log_slow_filter & SLOG_F_QC_NO) && 
++        (thd->query_plan_flags & QPLAN_QC))))
++    return;
++
++  /*
++    Low long_query_time value most likely means user is debugging stuff and even 
++    though some thread's queries are not supposed to be logged b/c of the rate 
++    limit, if one of them takes long enough (>= 1 second) it will be sensible 
++    to make an exception and write to slow log anyway.
++  */
++  if (opt_use_global_long_query_time)
++    thd->variables.long_query_time = global_system_variables.long_query_time;
++  if (thd->write_to_slow_log != TRUE && thd->variables.long_query_time < 1000000 &&
++      (ulong) (thd->start_timer - thd->timer_after_lock) >= 1000000)
++    thd->write_to_slow_log= TRUE;
++
++  /* Do not log this thread's queries due to rate limiting. */
++  if (thd->write_to_slow_log != TRUE)
++    return;
+ 
+   /*
+     Do not log administrative statements unless the appropriate option is
+     set; do not log into slow log if reading from backup.
+   */
+-  if (thd->enable_slow_log && !thd->user_time)
++  if (thd->enable_slow_log &&
++      (!thd->user_time || (thd->slave_thread && opt_log_slow_slave_statements))
++     )
+   {
+     thd_proc_info(thd, "logging slow query");
+ 
+-    if ((ulong) (thd->start_time - thd->time_after_lock) >
+-	thd->variables.long_query_time ||
+-        (thd->server_status &
+-	  (SERVER_QUERY_NO_INDEX_USED | SERVER_QUERY_NO_GOOD_INDEX_USED)) &&
+-        opt_log_queries_not_using_indexes &&
+-        /* == SQLCOM_END unless this is a SHOW command */
+-        thd->lex->orig_sql_command == SQLCOM_END)
++    if (((ulong) (thd->start_timer - thd->timer_after_lock) >=
++         thd->variables.long_query_time ||
++         (thd->server_status &
++              (SERVER_QUERY_NO_INDEX_USED | SERVER_QUERY_NO_GOOD_INDEX_USED)) &&
++         opt_log_queries_not_using_indexes &&
++         /* == SQLCOM_END unless this is a SHOW command */
++         thd->lex->orig_sql_command == SQLCOM_END) &&
++        thd->examined_row_count >= thd->variables.min_examined_row_limit)
+     {
+       thd_proc_info(thd, "logging slow query");
+       thd->status_var.long_query_count++;
+-      mysql_slow_log.write(thd, thd->query, thd->query_length, start_of_query);
++      mysql_slow_log.write(thd, thd->query, thd->query_length, start_of_query, start_of_query_timer);
+     }
+   }
+ }
+@@ -2664,6 +2702,8 @@
+     context.resolve_in_table_list_only((TABLE_LIST*)select_lex->
+                                        table_list.first);
+ 
++  /* Reset the counter at all cases for the extended slow query log */
++  thd->row_count= 1;
+   /*
+     Reset warning count for each query that uses tables
+     A better approach would be to reset this for any commands
+@@ -6084,6 +6120,15 @@
+     thd->total_warn_count=0;			// Warnings for this query
+     thd->rand_used= 0;
+     thd->sent_row_count= thd->examined_row_count= 0;
++    thd->innodb_was_used= FALSE;
++    thd->innodb_io_reads= 0;
++    thd->innodb_io_read= 0;
++    thd->innodb_io_reads_wait_timer= 0;
++    thd->innodb_lock_que_wait_timer= 0;
++    thd->innodb_innodb_que_wait_timer= 0;
++    thd->innodb_page_access= 0;
++    thd->query_plan_flags= QPLAN_NONE;
++    thd->query_plan_fsort_passes= 0;
+   }
+   DBUG_VOID_RETURN;
+ }
+diff -r 25523be1816e sql/sql_select.cc
+--- a/sql/sql_select.cc	Mon Dec 22 00:25:06 2008 -0800
++++ b/sql/sql_select.cc	Mon Dec 22 00:26:39 2008 -0800
+@@ -6221,8 +6221,11 @@
+ 	  {
+ 	    join->thd->server_status|=SERVER_QUERY_NO_INDEX_USED;
+ 	    if (statistics)
++	    {
+ 	      statistic_increment(join->thd->status_var.select_scan_count,
+ 				  &LOCK_status);
++				join->thd->query_plan_flags|= QPLAN_FULL_SCAN;
++      }
+ 	  }
+ 	}
+ 	else
+@@ -6237,8 +6240,11 @@
+ 	  {
+ 	    join->thd->server_status|=SERVER_QUERY_NO_INDEX_USED;
+ 	    if (statistics)
++	    {
+ 	      statistic_increment(join->thd->status_var.select_full_join_count,
+ 				  &LOCK_status);
++				join->thd->query_plan_flags|= QPLAN_FULL_JOIN;
++      }
+ 	  }
+ 	}
+ 	if (!table->no_keyread)
+@@ -9302,6 +9308,7 @@
+ 		      (ulong) rows_limit,test(group)));
+ 
+   statistic_increment(thd->status_var.created_tmp_tables, &LOCK_status);
++  thd->query_plan_flags|= QPLAN_TMP_TABLE;
+ 
+   if (use_temp_pool && !(test_flags & TEST_KEEP_TMP_TABLES))
+     temp_pool_slot = bitmap_set_next(&temp_pool);
+@@ -10162,6 +10169,7 @@
+   }
+   statistic_increment(table->in_use->status_var.created_tmp_disk_tables,
+ 		      &LOCK_status);
++	table->in_use->query_plan_flags|= QPLAN_TMP_DISK;
+   table->s->db_record_offset= 1;
+   DBUG_RETURN(0);
+  err:
+diff -r 25523be1816e sql/sql_show.cc
+--- a/sql/sql_show.cc	Mon Dec 22 00:25:06 2008 -0800
++++ b/sql/sql_show.cc	Mon Dec 22 00:26:39 2008 -0800
+@@ -1532,6 +1532,12 @@
+           value= ((char *) status_var + (ulonglong) value);
+         case SHOW_LONGLONG:
+           end= longlong10_to_str(*(longlong*) value, buff, 10);
++          break;
++        case SHOW_MICROTIME:
++          show_type= ((sys_var*) value)->show_type();
++          value=     (char*) ((sys_var*) value)->value_ptr(thd, value_type,
++                                                           &null_lex_str);
++          end= buff + sprintf(buff, "%f", (((double) (*(ulonglong*)value))) / 1000000.0);
+           break;
+         case SHOW_HA_ROWS:
+           end= longlong10_to_str((longlong) *(ha_rows*) value, buff, 10);
+diff -r 25523be1816e sql/structs.h
+--- a/sql/structs.h	Mon Dec 22 00:25:06 2008 -0800
++++ b/sql/structs.h	Mon Dec 22 00:26:39 2008 -0800
+@@ -168,8 +168,8 @@
+ enum SHOW_TYPE
+ {
+   SHOW_UNDEF,
+-  SHOW_LONG, SHOW_LONGLONG, SHOW_INT, SHOW_CHAR, SHOW_CHAR_PTR, 
+-  SHOW_DOUBLE_STATUS,
++  SHOW_LONG, SHOW_LONGLONG, SHOW_MICROTIME, SHOW_INT, SHOW_CHAR, SHOW_CHAR_PTR, 
++  SHOW_DOUBLE_STATUS, 
+   SHOW_BOOL, SHOW_MY_BOOL, SHOW_OPENTABLES, SHOW_STARTTIME, 
+   SHOW_LONG_CONST, SHOW_INT_CONST, SHOW_HAVE, SHOW_SYS, SHOW_HA_ROWS,
+   SHOW_VARS,
diff --git a/1003_userstatv2-percona-5.0.75-b12.patch b/1003_userstatv2-percona-5.0.75-b12.patch
new file mode 100644
index 0000000..de796c0
--- /dev/null
+++ b/1003_userstatv2-percona-5.0.75-b12.patch
@@ -0,0 +1,4463 @@
+diff -r 1270c564d514 BUILD/Makefile.in
+--- a/BUILD/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/BUILD/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -169,6 +169,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 Docs/Makefile.in
+--- a/Docs/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/Docs/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -167,6 +167,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 Makefile.in
+--- a/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -191,6 +191,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 SSL/Makefile.in
+--- a/SSL/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/SSL/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -167,6 +167,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 aclocal.m4
+--- a/aclocal.m4	Mon Dec 22 00:26:39 2008 -0800
++++ b/aclocal.m4	Mon Dec 22 00:31:13 2008 -0800
+@@ -1597,7 +1597,7 @@
+ 
+   # Append ld.so.conf contents to the search path
+   if test -f /etc/ld.so.conf; then
+-    lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s", \[$]2)); skip = 1; } { if (!skip) print \[$]0; skip = 0; }' < /etc/ld.so.conf | $SED -e 's/#.*//;s/[:,	]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;/^$/d' | tr '\n' ' '`
++    lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s 2>/dev/null", \[$]2)); skip = 1; } { if (!skip) print \[$]0; skip = 0; }' < /etc/ld.so.conf | $SED -e 's/#.*//;s/[:,	]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;/^$/d' | tr '\n' ' '`
+     sys_lib_dlsearch_path_spec="/lib${libsuff} /usr/lib${libsuff} $lt_ld_extra"
+   fi
+ 
+@@ -4305,6 +4305,9 @@
+ # Is the compiler the GNU C compiler?
+ with_gcc=$_LT_AC_TAGVAR(GCC, $1)
+ 
++gcc_dir=\`gcc -print-file-name=. | $SED 's,/\.$,,'\`
++gcc_ver=\`gcc -dumpversion\`
++
+ # An ERE matcher.
+ EGREP=$lt_EGREP
+ 
+@@ -4438,11 +4441,11 @@
+ 
+ # Dependencies to place before the objects being linked to create a
+ # shared library.
+-predep_objects=$lt_[]_LT_AC_TAGVAR(predep_objects, $1)
++predep_objects=\`echo $lt_[]_LT_AC_TAGVAR(predep_objects, $1) | \$SED -e "s@\${gcc_dir}@\\\${gcc_dir}@g;s@\${gcc_ver}@\\\${gcc_ver}@g"\`
+ 
+ # Dependencies to place after the objects being linked to create a
+ # shared library.
+-postdep_objects=$lt_[]_LT_AC_TAGVAR(postdep_objects, $1)
++postdep_objects=\`echo $lt_[]_LT_AC_TAGVAR(postdep_objects, $1) | \$SED -e "s@\${gcc_dir}@\\\${gcc_dir}@g;s@\${gcc_ver}@\\\${gcc_ver}@g"\`
+ 
+ # Dependencies to place before the objects being linked to create a
+ # shared library.
+@@ -4454,7 +4457,7 @@
+ 
+ # The library search path used internally by the compiler when linking
+ # a shared library.
+-compiler_lib_search_path=$lt_[]_LT_AC_TAGVAR(compiler_lib_search_path, $1)
++compiler_lib_search_path=\`echo $lt_[]_LT_AC_TAGVAR(compiler_lib_search_path, $1) | \$SED -e "s@\${gcc_dir}@\\\${gcc_dir}@g;s@\${gcc_ver}@\\\${gcc_ver}@g"\`
+ 
+ # Method to check whether dependent libraries are shared objects.
+ deplibs_check_method=$lt_deplibs_check_method
+@@ -4534,7 +4537,7 @@
+ link_all_deplibs=$_LT_AC_TAGVAR(link_all_deplibs, $1)
+ 
+ # Compile-time system search path for libraries
+-sys_lib_search_path_spec=$lt_sys_lib_search_path_spec
++sys_lib_search_path_spec=\`echo $lt_sys_lib_search_path_spec | \$SED -e "s@\${gcc_dir}@\\\${gcc_dir}@g;s@\${gcc_ver}@\\\${gcc_ver}@g"\`
+ 
+ # Run-time system search path for libraries
+ sys_lib_dlsearch_path_spec=$lt_sys_lib_dlsearch_path_spec
+@@ -6370,6 +6373,7 @@
+     done
+   done
+ done
++IFS=$as_save_IFS
+ lt_ac_max=0
+ lt_ac_count=0
+ # Add /usr/xpg4/bin/sed as it is typically found on Solaris
+@@ -6402,6 +6406,7 @@
+ done
+ ])
+ SED=$lt_cv_path_SED
++AC_SUBST([SED])
+ AC_MSG_RESULT([$SED])
+ ])
+ 
+diff -r 1270c564d514 client/Makefile.in
+--- a/client/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/client/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -268,6 +268,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @CLIENT_LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 cmd-line-utils/Makefile.in
+--- a/cmd-line-utils/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/cmd-line-utils/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -177,6 +177,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 cmd-line-utils/libedit/Makefile.in
+--- a/cmd-line-utils/libedit/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/cmd-line-utils/libedit/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -197,6 +197,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 cmd-line-utils/readline/Makefile.in
+--- a/cmd-line-utils/readline/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/cmd-line-utils/readline/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -195,6 +195,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 configure
+--- a/configure	Mon Dec 22 00:26:39 2008 -0800
++++ b/configure	Mon Dec 22 00:31:13 2008 -0800
+@@ -477,7 +477,7 @@
+ #endif"
+ 
+ ac_subdirs_all="$ac_subdirs_all innobase"
+-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar MYSQL_NO_DASH_VERSION MYSQL_BASE_VERSION MYSQL_VERSION_ID MYSQL_PREVIOUS_BASE_VERSION PROTOCOL_VERSION DOT_FRM_VERSION SHARED_LIB_MAJOR_VERSION SHARED_LIB_VERSION NDB_SHARED_LIB_MAJOR_VERSION NDB_SHARED_LIB_VERSION AVAILABLE_LANGUAGES NDB_VERSION_MAJOR NDB_VERSION_MINOR NDB_VERSION_BUILD NDB_VERSION_STATUS SYSTEM_TYPE MACHINE_TYPE CONF_COMMAND SAVE_CC SAVE_CXX SAVE_ASFLAGS SAVE_CFLAGS SAVE_CXXFLAGS SAVE_LDFLAGS SAVE_CXXLDFLAGS CXXLDFLAGS AR RANLIB DARWIN_MWCC_TRUE DARWIN_MWCC_FALSE CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT DEPDIR am__include am__quote AMDEP_TRUE AMDEP_FALSE AMDEPBACKSLASH CCDEPMODE am__fastdepCC_TRUE am__fastdepCC_FALSE CXX CXXFLAGS ac_ct_CXX CXXDEPMODE am__fastdepCXX_TRUE am__fastdepCXX_FALSE CPP CC_VERSION CXX_VERSION AS ac_ct_RANLIB EGREP LN_S ECHO ac_ct_AR CXXCPP F77 FFLAGS ac_ct_F77 LIBTOOL NM YACC PDFMANUAL DVIS uname_prog ASFLAGS LD ARFLAGS LD_VERSION_SCRIPT MYSQLD_DEFAULT_SWITCHES TARGET_LINUX LN LN_CP_F MV RM CP SED CMP CHMOD HOSTNAME TAR PERL PERL5 DOXYGEN PDFLATEX MAKEINDEX ICHECK PS FIND_PROC KILL CHECK_PID CCAS CCASFLAGS NOINST_LDFLAGS MYSQL_SERVER_SUFFIX ASSEMBLER_x86_TRUE ASSEMBLER_x86_FALSE ASSEMBLER_sparc32_TRUE ASSEMBLER_sparc32_FALSE ASSEMBLER_sparc64_TRUE ASSEMBLER_sparc64_FALSE ASSEMBLER_TRUE ASSEMBLER_FALSE MYSQL_UNIX_ADDR MYSQL_TCP_PORT MYSQL_TCP_PORT_DEFAULT MYSQLD_USER GETCONF ac_ct_GETCONF zlib_dir ZLIB_LIBS ZLIB_DEPS ZLIB_INCLUDES WRAPLIBS pstack_dirs pstack_libs COMPILE_PSTACK_TRUE COMPILE_PSTACK_FALSE LIBDL MYSQLD_EXTRA_LDFLAGS CLIENT_EXTRA_LDFLAGS MYSQLD_EXTRA_LIBS LIB_EXTRA_CCFLAGS LM_CFLAGS COMPILATION_COMMENT ALLOCA MAKE_SHELL TERMCAP_LIB LIBEDIT_LOBJECTS tools_dirs openssl_libs openssl_includes yassl_taocrypt_extra_cxxflags yassl_h_ln_cmd yassl_libs yassl_dir HAVE_YASSL_TRUE HAVE_YASSL_FALSE libmysqld_dirs linked_libmysqld_targets docs_dirs extra_docs bench_dirs readline_dir readline_topdir readline_basedir readline_link readline_h_ln_cmd bdb_includes bdb_libs bdb_libs_with_path innodb_includes innodb_libs innodb_system_libs NDB_SCI_INCLUDES NDB_SCI_LIBS NDB_LD_VERSION_SCRIPT HAVE_NDBCLUSTER_DB_TRUE HAVE_NDBCLUSTER_DB_FALSE ndbcluster_includes ndbcluster_libs ndbcluster_system_libs ndb_mgmclient_libs man_dirs man1_files man8_files CLIENT_LIBS NON_THREADED_LIBS STATIC_NSS_FLAGS sql_client_dirs linked_client_targets netware_dir linked_netware_sources HAVE_NETWARE_TRUE HAVE_NETWARE_FALSE THREAD_LOBJECTS BUILD_INNODB_TOOLS_TRUE BUILD_INNODB_TOOLS_FALSE subdirs sql_server_dirs thread_dirs server_scripts sql_union_dirs GXX NDB_DEFS ndb_cxxflags_fix ndb_port ndb_transporter_opt_objs ndb_bin_am_ldflags ndb_opt_subdirs NDB_SIZEOF_CHARP NDB_SIZEOF_CHAR NDB_SIZEOF_SHORT NDB_SIZEOF_INT NDB_SIZEOF_LONG NDB_SIZEOF_LONG_LONG MAKE_BINARY_DISTRIBUTION_OPTIONS LIBOBJS LTLIBOBJS'
++ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar MYSQL_NO_DASH_VERSION MYSQL_BASE_VERSION MYSQL_VERSION_ID MYSQL_PREVIOUS_BASE_VERSION PROTOCOL_VERSION DOT_FRM_VERSION SHARED_LIB_MAJOR_VERSION SHARED_LIB_VERSION NDB_SHARED_LIB_MAJOR_VERSION NDB_SHARED_LIB_VERSION AVAILABLE_LANGUAGES NDB_VERSION_MAJOR NDB_VERSION_MINOR NDB_VERSION_BUILD NDB_VERSION_STATUS SYSTEM_TYPE MACHINE_TYPE CONF_COMMAND SAVE_CC SAVE_CXX SAVE_ASFLAGS SAVE_CFLAGS SAVE_CXXFLAGS SAVE_LDFLAGS SAVE_CXXLDFLAGS CXXLDFLAGS AR RANLIB DARWIN_MWCC_TRUE DARWIN_MWCC_FALSE CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT DEPDIR am__include am__quote AMDEP_TRUE AMDEP_FALSE AMDEPBACKSLASH CCDEPMODE am__fastdepCC_TRUE am__fastdepCC_FALSE CXX CXXFLAGS ac_ct_CXX CXXDEPMODE am__fastdepCXX_TRUE am__fastdepCXX_FALSE CPP CC_VERSION CXX_VERSION AS ac_ct_RANLIB SED EGREP LN_S ECHO ac_ct_AR CXXCPP F77 FFLAGS ac_ct_F77 LIBTOOL NM YACC PDFMANUAL DVIS uname_prog ASFLAGS LD ARFLAGS LD_VERSION_SCRIPT MYSQLD_DEFAULT_SWITCHES TARGET_LINUX LN LN_CP_F MV RM CP SED CMP CHMOD HOSTNAME TAR PERL PERL5 DOXYGEN PDFLATEX MAKEINDEX ICHECK PS FIND_PROC KILL CHECK_PID CCAS CCASFLAGS NOINST_LDFLAGS MYSQL_SERVER_SUFFIX ASSEMBLER_x86_TRUE ASSEMBLER_x86_FALSE ASSEMBLER_sparc32_TRUE ASSEMBLER_sparc32_FALSE ASSEMBLER_sparc64_TRUE ASSEMBLER_sparc64_FALSE ASSEMBLER_TRUE ASSEMBLER_FALSE MYSQL_UNIX_ADDR MYSQL_TCP_PORT MYSQL_TCP_PORT_DEFAULT MYSQLD_USER GETCONF ac_ct_GETCONF zlib_dir ZLIB_LIBS ZLIB_DEPS ZLIB_INCLUDES WRAPLIBS pstack_dirs pstack_libs COMPILE_PSTACK_TRUE COMPILE_PSTACK_FALSE LIBDL MYSQLD_EXTRA_LDFLAGS CLIENT_EXTRA_LDFLAGS MYSQLD_EXTRA_LIBS LIB_EXTRA_CCFLAGS LM_CFLAGS COMPILATION_COMMENT ALLOCA MAKE_SHELL TERMCAP_LIB LIBEDIT_LOBJECTS tools_dirs openssl_libs openssl_includes yassl_taocrypt_extra_cxxflags yassl_h_ln_cmd yassl_libs yassl_dir HAVE_YASSL_TRUE HAVE_YASSL_FALSE libmysqld_dirs linked_libmysqld_targets docs_dirs extra_docs bench_dirs readline_dir readline_topdir readline_basedir readline_link readline_h_ln_cmd bdb_includes bdb_libs bdb_libs_with_path innodb_includes innodb_libs innodb_system_libs NDB_SCI_INCLUDES NDB_SCI_LIBS NDB_LD_VERSION_SCRIPT HAVE_NDBCLUSTER_DB_TRUE HAVE_NDBCLUSTER_DB_FALSE ndbcluster_includes ndbcluster_libs ndbcluster_system_libs ndb_mgmclient_libs man_dirs man1_files man8_files CLIENT_LIBS NON_THREADED_LIBS STATIC_NSS_FLAGS sql_client_dirs linked_client_targets netware_dir linked_netware_sources HAVE_NETWARE_TRUE HAVE_NETWARE_FALSE THREAD_LOBJECTS BUILD_INNODB_TOOLS_TRUE BUILD_INNODB_TOOLS_FALSE subdirs sql_server_dirs thread_dirs server_scripts sql_union_dirs GXX NDB_DEFS ndb_cxxflags_fix ndb_port ndb_transporter_opt_objs ndb_bin_am_ldflags ndb_opt_subdirs NDB_SIZEOF_CHARP NDB_SIZEOF_CHAR NDB_SIZEOF_SHORT NDB_SIZEOF_INT NDB_SIZEOF_LONG NDB_SIZEOF_LONG_LONG MAKE_BINARY_DISTRIBUTION_OPTIONS LIBOBJS LTLIBOBJS'
+ ac_subst_files=''
+ 
+ # Initialize some variables set by options.
+@@ -38236,7 +38236,91 @@
+ 	# We also disable for SCO for the time being, the headers for the
+ 	# thread library we use conflicts with other headers.
+     ;;
+- *)
++*)
++   # most systems require the program be linked with librt library to use
++   # the function clock_gettime
++   my_save_LIBS="$LIBS"
++   LIBS=""
++
++echo "$as_me:$LINENO: checking for clock_gettime in -lrt" >&5
++echo $ECHO_N "checking for clock_gettime in -lrt... $ECHO_C" >&6
++if test "${ac_cv_lib_rt_clock_gettime+set}" = set; then
++  echo $ECHO_N "(cached) $ECHO_C" >&6
++else
++  ac_check_lib_save_LIBS=$LIBS
++LIBS="-lrt  $LIBS"
++cat >conftest.$ac_ext <<_ACEOF
++/* confdefs.h.  */
++_ACEOF
++cat confdefs.h >>conftest.$ac_ext
++cat >>conftest.$ac_ext <<_ACEOF
++/* end confdefs.h.  */
++
++/* Override any gcc2 internal prototype to avoid an error.  */
++#ifdef __cplusplus
++extern "C"
++#endif
++/* We use char because int might match the return type of a gcc2
++   builtin and then its argument prototype would still apply.  */
++char clock_gettime ();
++int
++main ()
++{
++clock_gettime ();
++  ;
++  return 0;
++}
++_ACEOF
++rm -f conftest.$ac_objext conftest$ac_exeext
++if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
++  (eval $ac_link) 2>conftest.er1
++  ac_status=$?
++  grep -v '^ *+' conftest.er1 >conftest.err
++  rm -f conftest.er1
++  cat conftest.err >&5
++  echo "$as_me:$LINENO: \$? = $ac_status" >&5
++  (exit $ac_status); } &&
++	 { ac_try='test -z "$ac_c_werror_flag"
++			 || test ! -s conftest.err'
++  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
++  (eval $ac_try) 2>&5
++  ac_status=$?
++  echo "$as_me:$LINENO: \$? = $ac_status" >&5
++  (exit $ac_status); }; } &&
++	 { ac_try='test -s conftest$ac_exeext'
++  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
++  (eval $ac_try) 2>&5
++  ac_status=$?
++  echo "$as_me:$LINENO: \$? = $ac_status" >&5
++  (exit $ac_status); }; }; then
++  ac_cv_lib_rt_clock_gettime=yes
++else
++  echo "$as_me: failed program was:" >&5
++sed 's/^/| /' conftest.$ac_ext >&5
++
++ac_cv_lib_rt_clock_gettime=no
++fi
++rm -f conftest.err conftest.$ac_objext \
++      conftest$ac_exeext conftest.$ac_ext
++LIBS=$ac_check_lib_save_LIBS
++fi
++echo "$as_me:$LINENO: result: $ac_cv_lib_rt_clock_gettime" >&5
++echo "${ECHO_T}$ac_cv_lib_rt_clock_gettime" >&6
++if test $ac_cv_lib_rt_clock_gettime = yes; then
++  cat >>confdefs.h <<_ACEOF
++#define HAVE_LIBRT 1
++_ACEOF
++
++  LIBS="-lrt $LIBS"
++
++fi
++
++   LIBRT=$LIBS
++   LIBS="$my_save_LIBS"
++
++
++   LIBS="$LIBS $LIBRT"
++
+ for ac_func in clock_gettime
+ do
+ as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+@@ -41644,7 +41728,7 @@
+ 
+ fi
+ 
+-CLIENT_LIBS="$NON_THREADED_LIBS $openssl_libs $ZLIB_LIBS $STATIC_NSS_FLAGS"
++CLIENT_LIBS="$NON_THREADED_LIBS $openssl_libs $ZLIB_LIBS $STATIC_NSS_FLAGS $LIBRT"
+ 
+ 
+ 
+@@ -42984,6 +43068,7 @@
+ s,@MAKE_SHELL@,$MAKE_SHELL,;t t
+ s,@TERMCAP_LIB@,$TERMCAP_LIB,;t t
+ s,@LIBEDIT_LOBJECTS@,$LIBEDIT_LOBJECTS,;t t
++s,@LIBRT@,$LIBRT,;t t
+ s,@tools_dirs@,$tools_dirs,;t t
+ s,@openssl_libs@,$openssl_libs,;t t
+ s,@openssl_includes@,$openssl_includes,;t t
+diff -r 1270c564d514 configure.in
+--- a/configure.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/configure.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -2098,7 +2098,18 @@
+ 	# We also disable for SCO for the time being, the headers for the
+ 	# thread library we use conflicts with other headers.
+     ;;
+- *) AC_CHECK_FUNCS(clock_gettime)
++*) 
++   # most systems require the program be linked with librt library to use
++   # the function clock_gettime 
++   my_save_LIBS="$LIBS"
++   LIBS=""
++   AC_CHECK_LIB(rt,clock_gettime)
++   LIBRT=$LIBS
++   LIBS="$my_save_LIBS"
++   AC_SUBST(LIBRT)
++
++   LIBS="$LIBS $LIBRT"
++   AC_CHECK_FUNCS(clock_gettime)
+     ;;
+ esac
+ 
+@@ -2713,7 +2724,7 @@
+   AC_DEFINE([THREAD_SAFE_CLIENT], [1], [Should be client be thread safe])
+ fi
+ 
+-CLIENT_LIBS="$NON_THREADED_LIBS $openssl_libs $ZLIB_LIBS $STATIC_NSS_FLAGS"
++CLIENT_LIBS="$NON_THREADED_LIBS $openssl_libs $ZLIB_LIBS $STATIC_NSS_FLAGS $LIBRT"
+ 
+ AC_SUBST(CLIENT_LIBS)
+ AC_SUBST(NON_THREADED_LIBS)
+diff -r 1270c564d514 dbug/Makefile.in
+--- a/dbug/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/dbug/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -214,6 +214,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 extra/Makefile.in
+--- a/extra/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/extra/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -259,6 +259,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 extra/yassl/Makefile.in
+--- a/extra/yassl/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/extra/yassl/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -162,6 +162,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 extra/yassl/src/Makefile.in
+--- a/extra/yassl/src/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/extra/yassl/src/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -173,6 +173,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 extra/yassl/taocrypt/Makefile.in
+--- a/extra/yassl/taocrypt/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/extra/yassl/taocrypt/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -162,6 +162,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 extra/yassl/taocrypt/benchmark/Makefile.in
+--- a/extra/yassl/taocrypt/benchmark/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/extra/yassl/taocrypt/benchmark/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -172,6 +172,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 extra/yassl/taocrypt/src/Makefile.in
+--- a/extra/yassl/taocrypt/src/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/extra/yassl/taocrypt/src/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -182,6 +182,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 extra/yassl/taocrypt/test/Makefile.in
+--- a/extra/yassl/taocrypt/test/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/extra/yassl/taocrypt/test/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -172,6 +172,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 extra/yassl/testsuite/Makefile.in
+--- a/extra/yassl/testsuite/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/extra/yassl/testsuite/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -175,6 +175,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 heap/Makefile.in
+--- a/heap/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/heap/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -218,6 +218,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 include/Makefile.in
+--- a/include/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/include/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -183,6 +183,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 include/mysql_com.h
+--- a/include/mysql_com.h	Mon Dec 22 00:26:39 2008 -0800
++++ b/include/mysql_com.h	Mon Dec 22 00:31:13 2008 -0800
+@@ -106,6 +106,11 @@
+ 					   thread */
+ #define REFRESH_MASTER          128     /* Remove all bin logs in the index
+ 					   and truncate the index */
++#define REFRESH_TABLE_STATS     256     /* Refresh table stats hash table */
++#define REFRESH_INDEX_STATS     512     /* Refresh index stats hash table */
++#define REFRESH_USER_STATS      1024    /* Refresh user stats hash table */
++#define REFRESH_SLOW_QUERY_LOG  4096    /* Flush slow query log and rotate*/
++#define REFRESH_CLIENT_STATS    8192    /* Refresh client stats hash table */
+ 
+ /* The following can't be set with mysql_refresh() */
+ #define REFRESH_READ_LOCK	16384	/* Lock tables for read */
+diff -r 1270c564d514 libmysql/Makefile.in
+--- a/libmysql/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/libmysql/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -278,6 +278,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @CLIENT_LIBS@ 
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 libmysql_r/Makefile.in
+--- a/libmysql_r/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/libmysql_r/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -275,6 +275,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@ @ZLIB_LIBS@ @openssl_libs@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 libmysqld/Makefile.in
+--- a/libmysqld/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/libmysqld/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -264,6 +264,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 libmysqld/examples/Makefile.in
+--- a/libmysqld/examples/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/libmysqld/examples/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -213,6 +213,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@ @WRAPLIBS@ @CLIENT_LIBS@ $(yassl_libs)
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 man/Makefile.in
+--- a/man/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/man/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -174,6 +174,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 myisam/Makefile.in
+--- a/myisam/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/myisam/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -257,6 +257,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 myisammrg/Makefile.in
+--- a/myisammrg/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/myisammrg/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -205,6 +205,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 mysql-test/Makefile.in
+--- a/mysql-test/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/mysql-test/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -181,6 +181,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 mysql-test/ndb/Makefile.in
+--- a/mysql-test/ndb/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/mysql-test/ndb/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -170,6 +170,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 mysql-test/r/information_schema.result
+--- a/mysql-test/r/information_schema.result	Mon Dec 22 00:26:39 2008 -0800
++++ b/mysql-test/r/information_schema.result	Mon Dec 22 00:31:13 2008 -0800
+@@ -37,10 +37,12 @@
+ select * from v1;
+ c
+ CHARACTER_SETS
++CLIENT_STATISTICS
+ COLLATIONS
+ COLLATION_CHARACTER_SET_APPLICABILITY
+ COLUMNS
+ COLUMN_PRIVILEGES
++INDEX_STATISTICS
+ KEY_COLUMN_USAGE
+ PROFILING
+ ROUTINES
+@@ -50,8 +52,10 @@
+ TABLES
+ TABLE_CONSTRAINTS
+ TABLE_PRIVILEGES
++TABLE_STATISTICS
+ TRIGGERS
+ USER_PRIVILEGES
++USER_STATISTICS
+ VIEWS
+ columns_priv
+ db
+@@ -83,6 +87,7 @@
+ TABLES	TABLES
+ TABLE_CONSTRAINTS	TABLE_CONSTRAINTS
+ TABLE_PRIVILEGES	TABLE_PRIVILEGES
++TABLE_STATISTICS	TABLE_STATISTICS
+ TRIGGERS	TRIGGERS
+ tables_priv	tables_priv
+ time_zone	time_zone
+@@ -102,6 +107,7 @@
+ TABLES	TABLES
+ TABLE_CONSTRAINTS	TABLE_CONSTRAINTS
+ TABLE_PRIVILEGES	TABLE_PRIVILEGES
++TABLE_STATISTICS	TABLE_STATISTICS
+ TRIGGERS	TRIGGERS
+ tables_priv	tables_priv
+ time_zone	time_zone
+@@ -121,6 +127,7 @@
+ TABLES	TABLES
+ TABLE_CONSTRAINTS	TABLE_CONSTRAINTS
+ TABLE_PRIVILEGES	TABLE_PRIVILEGES
++TABLE_STATISTICS	TABLE_STATISTICS
+ TRIGGERS	TRIGGERS
+ tables_priv	tables_priv
+ time_zone	time_zone
+@@ -594,12 +601,13 @@
+ where table_schema='information_schema' limit 2;
+ TABLE_NAME	TABLE_TYPE	ENGINE
+ CHARACTER_SETS	SYSTEM VIEW	MEMORY
+-COLLATIONS	SYSTEM VIEW	MEMORY
++CLIENT_STATISTICS	SYSTEM VIEW	MEMORY
+ show tables from information_schema like "T%";
+ Tables_in_information_schema (T%)
+ TABLES
+ TABLE_CONSTRAINTS
+ TABLE_PRIVILEGES
++TABLE_STATISTICS
+ TRIGGERS
+ create database information_schema;
+ ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
+@@ -609,6 +617,7 @@
+ TABLES	SYSTEM VIEW
+ TABLE_CONSTRAINTS	SYSTEM VIEW
+ TABLE_PRIVILEGES	SYSTEM VIEW
++TABLE_STATISTICS	SYSTEM VIEW
+ TRIGGERS	SYSTEM VIEW
+ create table t1(a int);
+ ERROR 42S02: Unknown table 't1' in information_schema
+@@ -621,6 +630,7 @@
+ TABLES
+ TABLE_CONSTRAINTS
+ TABLE_PRIVILEGES
++TABLE_STATISTICS
+ TRIGGERS
+ select table_name from tables where table_name='user';
+ table_name
+@@ -730,7 +740,7 @@
+ CREATE VIEW a1 (t_CRASHME) AS SELECT f1 FROM t_crashme GROUP BY f1;
+ CREATE VIEW a2 AS SELECT t_CRASHME FROM a1;
+ count(*)
+-102
++106
+ drop view a2, a1;
+ drop table t_crashme;
+ select table_schema,table_name, column_name from
+@@ -790,18 +800,20 @@
+ TABLE_NAME	COLUMN_NAME	PRIVILEGES
+ COLUMNS	TABLE_NAME	select
+ COLUMN_PRIVILEGES	TABLE_NAME	select
++INDEX_STATISTICS	TABLE_NAME	select
+ KEY_COLUMN_USAGE	TABLE_NAME	select
+ STATISTICS	TABLE_NAME	select
+ TABLES	TABLE_NAME	select
+ TABLE_CONSTRAINTS	TABLE_NAME	select
+ TABLE_PRIVILEGES	TABLE_NAME	select
++TABLE_STATISTICS	TABLE_NAME	select
+ VIEWS	TABLE_NAME	select
+ delete from mysql.user where user='mysqltest_4';
+ delete from mysql.db where user='mysqltest_4';
+ flush privileges;
+ SELECT table_schema, count(*) FROM information_schema.TABLES GROUP BY TABLE_SCHEMA;
+ table_schema	count(*)
+-information_schema	17
++information_schema	21
+ mysql	17
+ create table t1 (i int, j int);
+ create trigger trg1 before insert on t1 for each row
+@@ -1187,10 +1199,12 @@
+         );
+ table_name	column_name
+ CHARACTER_SETS	CHARACTER_SET_NAME
++CLIENT_STATISTICS	CLIENT
+ COLLATIONS	COLLATION_NAME
+ COLLATION_CHARACTER_SET_APPLICABILITY	COLLATION_NAME
+ COLUMNS	TABLE_SCHEMA
+ COLUMN_PRIVILEGES	TABLE_SCHEMA
++INDEX_STATISTICS	TABLE_SCHEMA
+ KEY_COLUMN_USAGE	CONSTRAINT_SCHEMA
+ PROFILING	QUERY_ID
+ ROUTINES	ROUTINE_SCHEMA
+@@ -1200,8 +1214,10 @@
+ TABLES	TABLE_SCHEMA
+ TABLE_CONSTRAINTS	CONSTRAINT_SCHEMA
+ TABLE_PRIVILEGES	TABLE_SCHEMA
++TABLE_STATISTICS	TABLE_SCHEMA
+ TRIGGERS	TRIGGER_SCHEMA
+ USER_PRIVILEGES	GRANTEE
++USER_STATISTICS	USER
+ VIEWS	TABLE_SCHEMA
+ SELECT t.table_name, c1.column_name
+ FROM information_schema.tables t
+@@ -1219,10 +1235,12 @@
+         );
+ table_name	column_name
+ CHARACTER_SETS	CHARACTER_SET_NAME
++CLIENT_STATISTICS	CLIENT
+ COLLATIONS	COLLATION_NAME
+ COLLATION_CHARACTER_SET_APPLICABILITY	COLLATION_NAME
+ COLUMNS	TABLE_SCHEMA
+ COLUMN_PRIVILEGES	TABLE_SCHEMA
++INDEX_STATISTICS	TABLE_SCHEMA
+ KEY_COLUMN_USAGE	CONSTRAINT_SCHEMA
+ PROFILING	QUERY_ID
+ ROUTINES	ROUTINE_SCHEMA
+@@ -1232,8 +1250,10 @@
+ TABLES	TABLE_SCHEMA
+ TABLE_CONSTRAINTS	CONSTRAINT_SCHEMA
+ TABLE_PRIVILEGES	TABLE_SCHEMA
++TABLE_STATISTICS	TABLE_SCHEMA
+ TRIGGERS	TRIGGER_SCHEMA
+ USER_PRIVILEGES	GRANTEE
++USER_STATISTICS	USER
+ VIEWS	TABLE_SCHEMA
+ SELECT MAX(table_name) FROM information_schema.tables;
+ MAX(table_name)
+@@ -1302,10 +1322,12 @@
+ group by t.table_name order by num1, t.table_name;
+ table_name	group_concat(t.table_schema, '.', t.table_name)	num1
+ CHARACTER_SETS	information_schema.CHARACTER_SETS	1
++CLIENT_STATISTICS	information_schema.CLIENT_STATISTICS	1
+ COLLATIONS	information_schema.COLLATIONS	1
+ COLLATION_CHARACTER_SET_APPLICABILITY	information_schema.COLLATION_CHARACTER_SET_APPLICABILITY	1
+ COLUMNS	information_schema.COLUMNS	1
+ COLUMN_PRIVILEGES	information_schema.COLUMN_PRIVILEGES	1
++INDEX_STATISTICS	information_schema.INDEX_STATISTICS	1
+ KEY_COLUMN_USAGE	information_schema.KEY_COLUMN_USAGE	1
+ PROFILING	information_schema.PROFILING	1
+ ROUTINES	information_schema.ROUTINES	1
+@@ -1315,8 +1337,10 @@
+ TABLES	information_schema.TABLES	1
+ TABLE_CONSTRAINTS	information_schema.TABLE_CONSTRAINTS	1
+ TABLE_PRIVILEGES	information_schema.TABLE_PRIVILEGES	1
++TABLE_STATISTICS	information_schema.TABLE_STATISTICS	1
+ TRIGGERS	information_schema.TRIGGERS	1
+ USER_PRIVILEGES	information_schema.USER_PRIVILEGES	1
++USER_STATISTICS	information_schema.USER_STATISTICS	1
+ VIEWS	information_schema.VIEWS	1
+ show global status like "Uptime_%";
+ Variable_name	Value
+diff -r 1270c564d514 mysql-test/r/information_schema_db.result
+--- a/mysql-test/r/information_schema_db.result	Mon Dec 22 00:26:39 2008 -0800
++++ b/mysql-test/r/information_schema_db.result	Mon Dec 22 00:31:13 2008 -0800
+@@ -6,10 +6,12 @@
+ show tables;
+ Tables_in_information_schema
+ CHARACTER_SETS
++CLIENT_STATISTICS
+ COLLATIONS
+ COLLATION_CHARACTER_SET_APPLICABILITY
+ COLUMNS
+ COLUMN_PRIVILEGES
++INDEX_STATISTICS
+ KEY_COLUMN_USAGE
+ PROFILING
+ ROUTINES
+@@ -19,14 +21,17 @@
+ TABLES
+ TABLE_CONSTRAINTS
+ TABLE_PRIVILEGES
++TABLE_STATISTICS
+ TRIGGERS
+ USER_PRIVILEGES
++USER_STATISTICS
+ VIEWS
+ show tables from INFORMATION_SCHEMA like 'T%';
+ Tables_in_information_schema (T%)
+ TABLES
+ TABLE_CONSTRAINTS
+ TABLE_PRIVILEGES
++TABLE_STATISTICS
+ TRIGGERS
+ create database `inf%`;
+ create database mbase;
+diff -r 1270c564d514 mysql-test/r/mysqlshow.result
+--- a/mysql-test/r/mysqlshow.result	Mon Dec 22 00:26:39 2008 -0800
++++ b/mysql-test/r/mysqlshow.result	Mon Dec 22 00:31:13 2008 -0800
+@@ -80,10 +80,12 @@
+ |                Tables                 |
+ +---------------------------------------+
+ | CHARACTER_SETS                        |
++| CLIENT_STATISTICS                     |
+ | COLLATIONS                            |
+ | COLLATION_CHARACTER_SET_APPLICABILITY |
+ | COLUMNS                               |
+ | COLUMN_PRIVILEGES                     |
++| INDEX_STATISTICS                      |
+ | KEY_COLUMN_USAGE                      |
+ | PROFILING                             |
+ | ROUTINES                              |
+@@ -93,8 +95,10 @@
+ | TABLES                                |
+ | TABLE_CONSTRAINTS                     |
+ | TABLE_PRIVILEGES                      |
++| TABLE_STATISTICS                      |
+ | TRIGGERS                              |
+ | USER_PRIVILEGES                       |
++| USER_STATISTICS                       |
+ | VIEWS                                 |
+ +---------------------------------------+
+ Database: INFORMATION_SCHEMA
+@@ -102,10 +106,12 @@
+ |                Tables                 |
+ +---------------------------------------+
+ | CHARACTER_SETS                        |
++| CLIENT_STATISTICS                     |
+ | COLLATIONS                            |
+ | COLLATION_CHARACTER_SET_APPLICABILITY |
+ | COLUMNS                               |
+ | COLUMN_PRIVILEGES                     |
++| INDEX_STATISTICS                      |
+ | KEY_COLUMN_USAGE                      |
+ | PROFILING                             |
+ | ROUTINES                              |
+@@ -115,8 +121,10 @@
+ | TABLES                                |
+ | TABLE_CONSTRAINTS                     |
+ | TABLE_PRIVILEGES                      |
++| TABLE_STATISTICS                      |
+ | TRIGGERS                              |
+ | USER_PRIVILEGES                       |
++| USER_STATISTICS                       |
+ | VIEWS                                 |
+ +---------------------------------------+
+ Wildcard: inf_rmation_schema
+diff -r 1270c564d514 mysys/Makefile.in
+--- a/mysys/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/mysys/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -249,6 +249,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/Makefile.in
+--- a/ndb/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -191,6 +191,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/docs/Makefile.in
+--- a/ndb/docs/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/docs/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -172,6 +172,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/include/Makefile.in
+--- a/ndb/include/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/include/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -202,6 +202,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/Makefile.in
+--- a/ndb/src/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -220,6 +220,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/common/Makefile.in
+--- a/ndb/src/common/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/common/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -193,6 +193,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/common/debugger/Makefile.in
+--- a/ndb/src/common/debugger/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/common/debugger/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -225,6 +225,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/common/debugger/signaldata/Makefile.in
+--- a/ndb/src/common/debugger/signaldata/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/common/debugger/signaldata/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -233,6 +233,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/common/logger/Makefile.in
+--- a/ndb/src/common/logger/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/common/logger/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -219,6 +219,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/common/mgmcommon/Makefile.in
+--- a/ndb/src/common/mgmcommon/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/common/mgmcommon/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -233,6 +233,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/common/portlib/Makefile.in
+--- a/ndb/src/common/portlib/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/common/portlib/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -243,6 +243,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/common/transporter/Makefile.in
+--- a/ndb/src/common/transporter/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/common/transporter/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -219,6 +219,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/common/util/Makefile.in
+--- a/ndb/src/common/util/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/common/util/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -235,6 +235,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/cw/Makefile.in
+--- a/ndb/src/cw/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/cw/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -176,6 +176,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/cw/cpcd/Makefile.in
+--- a/ndb/src/cw/cpcd/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/cw/cpcd/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -226,6 +226,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/kernel/Makefile.in
+--- a/ndb/src/kernel/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/kernel/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -246,6 +246,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/kernel/blocks/Makefile.in
+--- a/ndb/src/kernel/blocks/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/kernel/blocks/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -176,6 +176,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/kernel/blocks/backup/Makefile.in
+--- a/ndb/src/kernel/blocks/backup/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/kernel/blocks/backup/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -218,6 +218,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/kernel/blocks/cmvmi/Makefile.in
+--- a/ndb/src/kernel/blocks/cmvmi/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/kernel/blocks/cmvmi/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -218,6 +218,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/kernel/blocks/dbacc/Makefile.in
+--- a/ndb/src/kernel/blocks/dbacc/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/kernel/blocks/dbacc/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -218,6 +218,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/kernel/blocks/dbdict/Makefile.in
+--- a/ndb/src/kernel/blocks/dbdict/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/kernel/blocks/dbdict/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -228,6 +228,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/kernel/blocks/dbdih/Makefile.in
+--- a/ndb/src/kernel/blocks/dbdih/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/kernel/blocks/dbdih/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -225,6 +225,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/kernel/blocks/dblqh/Makefile.in
+--- a/ndb/src/kernel/blocks/dblqh/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/kernel/blocks/dblqh/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -226,6 +226,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/kernel/blocks/dbtc/Makefile.in
+--- a/ndb/src/kernel/blocks/dbtc/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/kernel/blocks/dbtc/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -218,6 +218,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/kernel/blocks/dbtup/Makefile.in
+--- a/ndb/src/kernel/blocks/dbtup/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/kernel/blocks/dbtup/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -226,6 +226,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/kernel/blocks/dbtux/Makefile.in
+--- a/ndb/src/kernel/blocks/dbtux/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/kernel/blocks/dbtux/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -221,6 +221,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/kernel/blocks/dbutil/Makefile.in
+--- a/ndb/src/kernel/blocks/dbutil/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/kernel/blocks/dbutil/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -218,6 +218,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/kernel/blocks/ndbcntr/Makefile.in
+--- a/ndb/src/kernel/blocks/ndbcntr/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/kernel/blocks/ndbcntr/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -219,6 +219,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/kernel/blocks/ndbfs/Makefile.in
+--- a/ndb/src/kernel/blocks/ndbfs/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/kernel/blocks/ndbfs/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -219,6 +219,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/kernel/blocks/qmgr/Makefile.in
+--- a/ndb/src/kernel/blocks/qmgr/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/kernel/blocks/qmgr/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -218,6 +218,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/kernel/blocks/suma/Makefile.in
+--- a/ndb/src/kernel/blocks/suma/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/kernel/blocks/suma/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -218,6 +218,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/kernel/blocks/trix/Makefile.in
+--- a/ndb/src/kernel/blocks/trix/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/kernel/blocks/trix/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -218,6 +218,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/kernel/error/Makefile.in
+--- a/ndb/src/kernel/error/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/kernel/error/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -227,6 +227,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/kernel/vm/Makefile.in
+--- a/ndb/src/kernel/vm/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/kernel/vm/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -229,6 +229,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/mgmapi/Makefile.in
+--- a/ndb/src/mgmapi/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/mgmapi/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -226,6 +226,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/mgmclient/Makefile.in
+--- a/ndb/src/mgmclient/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/mgmclient/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -236,6 +236,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/mgmsrv/Makefile.in
+--- a/ndb/src/mgmsrv/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/mgmsrv/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -232,6 +232,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/src/ndbapi/Makefile.in
+--- a/ndb/src/ndbapi/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/src/ndbapi/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -236,6 +236,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/test/Makefile.in
+--- a/ndb/test/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/test/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -176,6 +176,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/test/ndbapi/Makefile.in
+--- a/ndb/test/ndbapi/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/test/ndbapi/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -613,6 +613,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/test/ndbapi/bank/Makefile.in
+--- a/ndb/test/ndbapi/bank/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/test/ndbapi/bank/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -305,6 +305,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/test/run-test/Makefile.in
+--- a/ndb/test/run-test/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/test/run-test/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -264,6 +264,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/test/src/Makefile.in
+--- a/ndb/test/src/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/test/src/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -234,6 +234,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/test/tools/Makefile.in
+--- a/ndb/test/tools/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/test/tools/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -347,6 +347,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 ndb/tools/Makefile.in
+--- a/ndb/tools/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/ndb/tools/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -333,6 +333,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 netware/Makefile.in
+--- a/netware/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/netware/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -221,6 +221,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 os2/Makefile.in
+--- a/os2/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/os2/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -176,6 +176,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 os2/include/Makefile.in
+--- a/os2/include/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/os2/include/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -176,6 +176,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 os2/include/sys/Makefile.in
+--- a/os2/include/sys/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/os2/include/sys/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -167,6 +167,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 patch_info/userstats.info
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/patch_info/userstats.info	Mon Dec 22 00:31:13 2008 -0800
+@@ -0,0 +1,14 @@
++File=userstatsv2.patch
++Name=SHOW USER/TABLE/INDEX statistics
++Version=V2
++Author=Google
++License=GPL
++Comment=Added INFORMATION_SCHEMA.*_STATISTICS
++2008-12-01
++YK: fix behavior for prepared statements
++
++2008-11-26
++YK: add switch variable "userstat_running" to control INFORMATION_SCHEMA.*_STATISTICS (default:OFF)
++
++2008-12-09
++YK: fixed "Row_sent: 0" problem at microslow_innodb.patch
+diff -r 1270c564d514 pstack/Makefile.in
+--- a/pstack/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/pstack/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -215,6 +215,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 pstack/aout/Makefile.in
+--- a/pstack/aout/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/pstack/aout/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -157,6 +157,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 regex/Makefile.in
+--- a/regex/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/regex/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -199,6 +199,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 scripts/Makefile.in
+--- a/scripts/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/scripts/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -198,6 +198,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 server-tools/Makefile.in
+--- a/server-tools/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/server-tools/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -175,6 +175,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 server-tools/instance-manager/Makefile.in
+--- a/server-tools/instance-manager/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/server-tools/instance-manager/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -223,6 +223,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 sql/Makefile.in
+--- a/sql/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -285,6 +285,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 sql/ha_innodb.cc
+--- a/sql/ha_innodb.cc	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/ha_innodb.cc	Mon Dec 22 00:31:13 2008 -0800
+@@ -3316,6 +3316,8 @@
+ 
+ 	error = row_insert_for_mysql((byte*) record, prebuilt);
+ 
++        if (error == DB_SUCCESS) rows_changed++;
++
+ 	if (error == DB_SUCCESS && auto_inc_used) {
+ 
+         	/* Fetch the value that was set in the autoincrement field */
+@@ -3588,6 +3590,8 @@
+ 		}
+ 	}
+ 
++	if (error == DB_SUCCESS) rows_changed++;
++
+ 	innodb_srv_conc_exit_innodb(prebuilt->trx);
+ 
+ 	error = convert_error_code_to_mysql(error, user_thd);
+@@ -3635,6 +3639,8 @@
+ 	innodb_srv_conc_enter_innodb(prebuilt->trx);
+ 
+ 	error = row_update_for_mysql((byte*) record, prebuilt);
++
++	if (error == DB_SUCCESS) rows_changed++;
+ 
+ 	innodb_srv_conc_exit_innodb(prebuilt->trx);
+ 
+@@ -4068,6 +4074,9 @@
+ 	if (ret == DB_SUCCESS) {
+ 		error = 0;
+ 		table->status = 0;
++                rows_read++;
++                if (active_index >= 0 && active_index < MAX_KEY)
++                        index_rows_read[active_index]++;
+ 
+ 	} else if (ret == DB_RECORD_NOT_FOUND) {
+ 		error = HA_ERR_END_OF_FILE;
+diff -r 1270c564d514 sql/ha_myisam.cc
+--- a/sql/ha_myisam.cc	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/ha_myisam.cc	Mon Dec 22 00:31:13 2008 -0800
+@@ -670,7 +670,9 @@
+     if ((error= update_auto_increment()))
+       return error;
+   }
+-  return mi_write(file,buf);
++  int error=mi_write(file,buf);
++  if (!error) rows_changed++;
++  return error;
+ }
+ 
+ int ha_myisam::check(THD* thd, HA_CHECK_OPT* check_opt)
+@@ -1518,13 +1520,17 @@
+   statistic_increment(table->in_use->status_var.ha_update_count,&LOCK_status);
+   if (table->timestamp_field_type & TIMESTAMP_AUTO_SET_ON_UPDATE)
+     table->timestamp_field->set_time();
+-  return mi_update(file,old_data,new_data);
++  int error=mi_update(file,old_data,new_data);
++  if (!error) rows_changed++;
++  return error;
+ }
+ 
+ int ha_myisam::delete_row(const byte * buf)
+ {
+   statistic_increment(table->in_use->status_var.ha_delete_count,&LOCK_status);
+-  return mi_delete(file,buf);
++  int error=mi_delete(file,buf);
++  if (!error) rows_changed++;
++  return error;
+ }
+ 
+ int ha_myisam::index_read(byte * buf, const byte * key,
+@@ -1535,6 +1541,13 @@
+ 		      &LOCK_status);
+   int error=mi_rkey(file,buf,active_index, key, key_len, find_flag);
+   table->status=error ? STATUS_NOT_FOUND: 0;
++  if (!error) {
++    rows_read++;
++
++    int inx = (active_index == -1) ? file->lastinx : active_index;
++    if (inx >= 0 && inx < MAX_KEY)
++      index_rows_read[inx]++;
++  }
+   return error;
+ }
+ 
+@@ -1545,6 +1558,13 @@
+ 		      &LOCK_status);
+   int error=mi_rkey(file,buf,index, key, key_len, find_flag);
+   table->status=error ? STATUS_NOT_FOUND: 0;
++  if (!error) {
++    rows_read++;
++
++    int inx = index;
++    if (inx >= 0 && inx < MAX_KEY)
++      index_rows_read[inx]++;
++  }
+   return error;
+ }
+ 
+@@ -1555,6 +1575,13 @@
+ 		      &LOCK_status);
+   int error=mi_rkey(file,buf,active_index, key, key_len, HA_READ_PREFIX_LAST);
+   table->status=error ? STATUS_NOT_FOUND: 0;
++  if (!error) {
++    rows_read++;
++
++    int inx = (active_index == -1) ? file->lastinx : active_index;
++    if (inx >= 0 && inx < MAX_KEY)
++      index_rows_read[inx]++;
++  }
+   return error;
+ }
+ 
+@@ -1565,6 +1592,13 @@
+ 		      &LOCK_status);
+   int error=mi_rnext(file,buf,active_index);
+   table->status=error ? STATUS_NOT_FOUND: 0;
++  if (!error) {
++    rows_read++;
++
++    int inx = (active_index == -1) ? file->lastinx : active_index;
++    if (inx >= 0 && inx < MAX_KEY)
++      index_rows_read[inx]++;
++  }
+   return error;
+ }
+ 
+@@ -1575,6 +1609,13 @@
+ 		      &LOCK_status);
+   int error=mi_rprev(file,buf, active_index);
+   table->status=error ? STATUS_NOT_FOUND: 0;
++  if (!error) {
++    rows_read++;
++
++    int inx = (active_index == -1) ? file->lastinx : active_index;
++    if (inx >= 0 && inx < MAX_KEY)
++      index_rows_read[inx]++;
++  }
+   return error;
+ }
+ 
+@@ -1585,6 +1626,13 @@
+ 		      &LOCK_status);
+   int error=mi_rfirst(file, buf, active_index);
+   table->status=error ? STATUS_NOT_FOUND: 0;
++  if (!error) {
++    rows_read++;
++
++    int inx = (active_index == -1) ? file->lastinx : active_index;
++    if (inx >= 0 && inx < MAX_KEY)
++      index_rows_read[inx]++;
++  }
+   return error;
+ }
+ 
+@@ -1595,6 +1643,13 @@
+ 		      &LOCK_status);
+   int error=mi_rlast(file, buf, active_index);
+   table->status=error ? STATUS_NOT_FOUND: 0;
++  if (!error) {
++    rows_read++;
++
++    int inx = (active_index == -1) ? file->lastinx : active_index;
++    if (inx >= 0 && inx < MAX_KEY)
++      index_rows_read[inx]++;
++  }
+   return error;
+ }
+ 
+@@ -1611,6 +1666,13 @@
+     error= mi_rnext_same(file,buf);
+   } while (error == HA_ERR_RECORD_DELETED);
+   table->status=error ? STATUS_NOT_FOUND: 0;
++  if (!error) {
++    rows_read++;
++
++    int inx = (active_index == -1) ? file->lastinx : active_index;
++    if (inx >= 0 && inx < MAX_KEY)
++      index_rows_read[inx]++;
++  }
+   return error;
+ }
+ 
+@@ -1628,6 +1690,7 @@
+ 		      &LOCK_status);
+   int error=mi_scan(file, buf);
+   table->status=error ? STATUS_NOT_FOUND: 0;
++  if (!error) rows_read++;
+   return error;
+ }
+ 
+@@ -1642,6 +1705,7 @@
+ 		      &LOCK_status);
+   int error=mi_rrnd(file, buf, my_get_ptr(pos,ref_length));
+   table->status=error ? STATUS_NOT_FOUND: 0;
++  if (!error) rows_read++;
+   return error;
+ }
+ 
+diff -r 1270c564d514 sql/handler.cc
+--- a/sql/handler.cc	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/handler.cc	Mon Dec 22 00:31:13 2008 -0800
+@@ -725,6 +725,8 @@
+     if (cookie)
+       tc_log->unlog(cookie, xid);
+     DBUG_EXECUTE_IF("crash_commit_after", abort(););
++    if (is_real_trans)
++      thd->diff_commit_trans++;
+ end:
+     if (is_real_trans)
+       start_waiting_global_read_lock(thd);
+@@ -829,6 +831,7 @@
+       thd->transaction.cleanup();
+     }
+   }
++  thd->diff_rollback_trans++;
+ #endif /* USING_TRANSACTIONS */
+   if (all)
+     thd->transaction_rollback_request= FALSE;
+@@ -1212,6 +1215,7 @@
+     statistic_increment(thd->status_var.ha_rollback_count,&LOCK_status);
+     *ht=0; // keep it conveniently zero-filled
+   }
++  thd->diff_rollback_trans++;
+   DBUG_RETURN(error);
+ }
+ 
+@@ -1442,6 +1446,8 @@
+     else
+       dupp_ref=ref+ALIGN_SIZE(ref_length);
+   }
++  rows_read = rows_changed = 0;
++  memset(index_rows_read, 0, sizeof(index_rows_read));
+   DBUG_RETURN(error);
+ }
+ 
+@@ -2276,6 +2282,111 @@
+   return error;
+ }
+ 
++// Updates the global table stats with the TABLE this handler represents.
++void handler::update_global_table_stats() {
++  if (!opt_userstat_running) {
++    rows_read = rows_changed = 0;
++    return;
++  }
++
++  if (!rows_read && !rows_changed) return;  // Nothing to update.
++  // table_cache_key is db_name + '\0' + table_name + '\0'.
++  if (!table->s || !table->s->table_cache_key || !table->s->table_name) return;
++
++  TABLE_STATS* table_stats;
++  char key[NAME_LEN * 2 + 2];
++  // [db] + '.' + [table]
++  sprintf(key, "%s.%s", table->s->table_cache_key, table->s->table_name);
++
++  pthread_mutex_lock(&LOCK_global_table_stats);
++  // Gets the global table stats, creating one if necessary.
++  if (!(table_stats = (TABLE_STATS*)hash_search(&global_table_stats,
++                                                (byte*)key,
++                                                strlen(key)))) {
++    if (!(table_stats = ((TABLE_STATS*)
++                         my_malloc(sizeof(TABLE_STATS), MYF(MY_WME | MY_ZEROFILL))))) {
++      // Out of memory.
++      sql_print_error("Allocating table stats failed.");
++      goto end;
++    }
++    strncpy(table_stats->table, key, sizeof(table_stats->table));
++    table_stats->rows_read = 0;
++    table_stats->rows_changed = 0;
++    table_stats->rows_changed_x_indexes = 0;
++    table_stats->engine_type = (int) ht->db_type;
++
++    if (my_hash_insert(&global_table_stats, (byte*)table_stats)) {
++      // Out of memory.
++      sql_print_error("Inserting table stats failed.");
++      my_free((char*)table_stats, 0);
++      goto end;
++    }
++  }
++  // Updates the global table stats.
++  table_stats->rows_read += rows_read;
++  table_stats->rows_changed += rows_changed;
++  table_stats->rows_changed_x_indexes +=
++      rows_changed * (table->s->keys ? table->s->keys : 1);
++  current_thd->diff_total_read_rows += rows_read;
++  rows_read = rows_changed = 0;
++end:
++  pthread_mutex_unlock(&LOCK_global_table_stats);
++}
++
++// Updates the global index stats with this handler's accumulated index reads.
++void handler::update_global_index_stats() {
++  // table_cache_key is db_name + '\0' + table_name + '\0'.
++  if (!table->s || !table->s->table_cache_key || !table->s->table_name) return;
++
++  if (!opt_userstat_running) {
++    for (int x = 0; x < table->s->keys; x++) {
++      index_rows_read[x] = 0;
++    }
++    return;
++  }
++
++  for (int x = 0; x < table->s->keys; x++) {
++    if (index_rows_read[x]) {
++      // Rows were read using this index.
++      KEY* key_info = &table->key_info[x];
++
++      if (!key_info->name) continue;
++
++      INDEX_STATS* index_stats;
++      char key[NAME_LEN * 3 + 3];
++      // [db] + '.' + [table] + '.' + [index]
++      sprintf(key, "%s.%s.%s",  table->s->table_cache_key,
++              table->s->table_name, key_info->name);
++
++      pthread_mutex_lock(&LOCK_global_index_stats);
++      // Gets the global index stats, creating one if necessary.
++      if (!(index_stats = (INDEX_STATS*)hash_search(&global_index_stats,
++                                                    (byte*)key,
++                                                    strlen(key)))) {
++        if (!(index_stats = ((INDEX_STATS*)
++                             my_malloc(sizeof(INDEX_STATS), MYF(MY_WME | MY_ZEROFILL))))) {
++          // Out of memory.
++          sql_print_error("Allocating index stats failed.");
++          goto end;
++        }
++        strncpy(index_stats->index, key, sizeof(index_stats->index));
++        index_stats->rows_read = 0;
++
++        if (my_hash_insert(&global_index_stats, (byte*)index_stats)) {
++          // Out of memory.
++          sql_print_error("Inserting index stats failed.");
++          my_free((char*)index_stats, 0);
++          goto end;
++        }
++      }
++      // Updates the global index stats.
++      index_stats->rows_read += index_rows_read[x];
++      index_rows_read[x] = 0;
++end:
++      pthread_mutex_unlock(&LOCK_global_index_stats);
++    }
++  }
++}
+ 
+ /****************************************************************************
+ ** Some general functions that isn't in the handler class
+diff -r 1270c564d514 sql/handler.h
+--- a/sql/handler.h	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/handler.h	Mon Dec 22 00:31:13 2008 -0800
+@@ -30,6 +30,10 @@
+ #if defined(HAVE_BERKELEY_DB) || defined(HAVE_INNOBASE_DB) || \
+     defined(HAVE_NDBCLUSTER_DB)
+ #define USING_TRANSACTIONS
++#endif
++
++#if MAX_KEY > 128
++#error MAX_KEY is too large.  Values up to 128 are supported.
+ #endif
+ 
+ // the following is for checking tables
+@@ -604,6 +608,9 @@
+   bool  auto_increment_column_changed;
+   bool implicit_emptied;                /* Can be !=0 only if HEAP */
+   const COND *pushed_cond;
++  ulonglong rows_read;
++  ulonglong rows_changed;
++  ulonglong index_rows_read[MAX_KEY];
+ 
+   handler(const handlerton *ht_arg, TABLE *table_arg) :table(table_arg),
+     ht(ht_arg),
+@@ -615,8 +622,10 @@
+     ref_length(sizeof(my_off_t)), block_size(0),
+     raid_type(0), ft_handler(0), inited(NONE),
+     locked(FALSE), implicit_emptied(0),
+-    pushed_cond(NULL)
+-    {}
++    pushed_cond(NULL), rows_read(0), rows_changed(0)
++    {
++      memset(index_rows_read, 0, sizeof(index_rows_read));
++    }
+   virtual ~handler(void) { DBUG_ASSERT(locked == FALSE); /* TODO: DBUG_ASSERT(inited == NONE); */ }
+   virtual handler *clone(MEM_ROOT *mem_root);
+   int ha_open(const char *name, int mode, int test_if_locked);
+@@ -625,7 +634,11 @@
+   virtual void print_error(int error, myf errflag);
+   virtual bool get_error_message(int error, String *buf);
+   uint get_dup_key(int error);
+-  void change_table_ptr(TABLE *table_arg) { table=table_arg; }
++  void change_table_ptr(TABLE *table_arg) {
++    table=table_arg;
++    rows_read = rows_changed = 0;
++    memset(index_rows_read, 0, sizeof(index_rows_read));
++  }
+   virtual double scan_time()
+     { return ulonglong2double(data_file_length) / IO_SIZE + 2; }
+   virtual double read_time(uint index, uint ranges, ha_rows rows)
+@@ -886,6 +899,9 @@
+   virtual bool is_crashed() const  { return 0; }
+   virtual bool auto_repair() const { return 0; }
+ 
++  void update_global_table_stats();
++  void update_global_index_stats();
++
+   /*
+     default rename_table() and delete_table() rename/delete files with a
+     given name and extensions from bas_ext()
+diff -r 1270c564d514 sql/lex.h
+--- a/sql/lex.h	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/lex.h	Mon Dec 22 00:31:13 2008 -0800
+@@ -109,6 +109,7 @@
+   { "CHECKSUM",		SYM(CHECKSUM_SYM)},
+   { "CIPHER",		SYM(CIPHER_SYM)},
+   { "CLIENT",		SYM(CLIENT_SYM)},
++  { "CLIENT_STATISTICS", SYM(CLIENT_STATS_SYM)},
+   { "CLOSE",		SYM(CLOSE_SYM)},
+   { "CODE",             SYM(CODE_SYM)},
+   { "COLLATE",		SYM(COLLATE_SYM)},
+@@ -238,6 +239,7 @@
+   { "IN",		SYM(IN_SYM)},
+   { "INDEX",		SYM(INDEX_SYM)},
+   { "INDEXES",		SYM(INDEXES)},
++  { "INDEX_STATISTICS",	SYM(INDEX_STATS_SYM)},
+   { "INFILE",		SYM(INFILE)},
+   { "INNER",		SYM(INNER_SYM)},
+   { "INNOBASE",		SYM(INNOBASE_SYM)},
+@@ -443,6 +445,7 @@
+   { "SIGNED",		SYM(SIGNED_SYM)},
+   { "SIMPLE",		SYM(SIMPLE_SYM)},
+   { "SLAVE",            SYM(SLAVE)},
++  { "SLOW",             SYM(SLOW_SYM)},
+   { "SNAPSHOT",         SYM(SNAPSHOT_SYM)},
+   { "SMALLINT",		SYM(SMALLINT)},
+   { "SOME",             SYM(ANY_SYM)},
+@@ -488,6 +491,7 @@
+   { "TABLE",		SYM(TABLE_SYM)},
+   { "TABLES",		SYM(TABLES)},
+   { "TABLESPACE",	SYM(TABLESPACE)},
++  { "TABLE_STATISTICS",	SYM(TABLE_STATS_SYM)},
+   { "TEMPORARY",	SYM(TEMPORARY)},
+   { "TEMPTABLE",	SYM(TEMPTABLE_SYM)},
+   { "TERMINATED",	SYM(TERMINATED)},
+@@ -525,6 +529,7 @@
+   { "USE",		SYM(USE_SYM)},
+   { "USER",		SYM(USER)},
+   { "USER_RESOURCES",	SYM(RESOURCES)},
++  { "USER_STATISTICS",	SYM(USER_STATS_SYM)},
+   { "USE_FRM",		SYM(USE_FRM)},
+   { "USING",		SYM(USING)},
+   { "UTC_DATE",         SYM(UTC_DATE_SYM)},
+diff -r 1270c564d514 sql/log.cc
+--- a/sql/log.cc	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/log.cc	Mon Dec 22 00:31:13 2008 -0800
+@@ -1899,18 +1899,24 @@
+ 			   thd->current_insert_id);
+ 	if (e.write(file))
+ 	  goto err;
++        if (file == &log_file)
++          thd->binlog_bytes_written += e.data_written;
+       }
+       if (thd->insert_id_used)
+       {
+ 	Intvar_log_event e(thd,(uchar) INSERT_ID_EVENT,thd->last_insert_id);
+ 	if (e.write(file))
+ 	  goto err;
++        if (file == &log_file)
++          thd->binlog_bytes_written += e.data_written;
+       }
+       if (thd->rand_used)
+       {
+ 	Rand_log_event e(thd,thd->rand_saved_seed1,thd->rand_saved_seed2);
+ 	if (e.write(file))
+ 	  goto err;
++        if (file == &log_file)
++          thd->binlog_bytes_written += e.data_written;
+       }
+       if (thd->user_var_events.elements)
+       {
+@@ -1926,6 +1932,8 @@
+ 			       user_var_event->charset_number);
+ 	  if (e.write(file))
+ 	    goto err;
++	  if (file == &log_file)
++		  thd->binlog_bytes_written += e.data_written;
+ 	}
+       }
+     }
+@@ -1936,6 +1944,8 @@
+ 
+     if (event_info->write(file))
+       goto err;
++    if (file == &log_file)
++	    thd->binlog_bytes_written += event_info->data_written;
+ 
+     if (file == &log_file) // we are writing to the real log (disk)
+     {
+@@ -2057,6 +2067,7 @@
+     */
+     if (qinfo.write(&log_file))
+       goto err;
++    thd->binlog_bytes_written += qinfo.data_written;
+ 
+     /* Read from the file used to cache the queries .*/
+     if (reinit_io_cache(cache, READ_CACHE, 0, 0, 0))
+@@ -2103,6 +2114,7 @@
+         /* write the first half of the split header */
+         if (my_b_write(&log_file, header, carry))
+           goto err;
++        thd->binlog_bytes_written += carry;
+ 
+         /*
+           copy fixed second half of header to cache so the correct
+@@ -2171,6 +2183,8 @@
+       /* Write data to the binary log file */
+       if (my_b_write(&log_file, cache->read_pos, length))
+         goto err;
++      thd->binlog_bytes_written += length;
++
+       cache->read_pos=cache->read_end;		// Mark buffer used up
+       DBUG_EXECUTE_IF("half_binlogged_transaction", goto DBUG_skip_commit;);
+     } while ((length=my_b_fill(cache)));
+@@ -2179,6 +2193,8 @@
+ 
+     if (commit_event->write(&log_file))
+       goto err;
++    thd->binlog_bytes_written += commit_event->data_written;
++
+ #ifndef DBUG_OFF
+ DBUG_skip_commit:
+ #endif
+diff -r 1270c564d514 sql/mysql_priv.h
+--- a/sql/mysql_priv.h	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/mysql_priv.h	Mon Dec 22 00:31:13 2008 -0800
+@@ -818,7 +818,15 @@
+ bool multi_delete_set_locks_and_link_aux_tables(LEX *lex);
+ void init_max_user_conn(void);
+ void init_update_queries(void);
++void init_global_user_stats(void);
++void init_global_table_stats(void);
++void init_global_index_stats(void);
++void init_global_client_stats(void);
+ void free_max_user_conn(void);
++void free_global_user_stats(void);
++void free_global_table_stats(void);
++void free_global_index_stats(void);
++void free_global_client_stats(void);
+ pthread_handler_t handle_one_connection(void *arg);
+ pthread_handler_t handle_bootstrap(void *arg);
+ void end_thread(THD *thd,bool put_in_cache);
+@@ -1396,6 +1404,7 @@
+ extern ulong max_connections,max_connect_errors, connect_timeout;
+ extern ulong slave_net_timeout, slave_trans_retries;
+ extern uint max_user_connections;
++extern ulonglong denied_connections;
+ extern ulong what_to_log,flush_time;
+ extern ulong query_buff_size, thread_stack;
+ extern ulong max_prepared_stmt_count, prepared_stmt_count;
+@@ -1426,6 +1435,7 @@
+ extern my_bool opt_safe_show_db, opt_local_infile;
+ extern my_bool opt_slave_compressed_protocol, use_temp_pool;
+ extern my_bool opt_readonly, lower_case_file_system;
++extern my_bool opt_userstat_running;
+ extern my_bool opt_enable_named_pipe, opt_sync_frm, opt_allow_suspicious_udfs;
+ extern my_bool opt_secure_auth;
+ extern char* opt_secure_file_priv;
+@@ -1472,6 +1482,14 @@
+ extern struct system_variables max_system_variables;
+ extern struct system_status_var global_status_var;
+ extern struct rand_struct sql_rand;
++extern HASH global_user_stats;
++extern HASH global_client_stats;
++extern pthread_mutex_t LOCK_global_user_client_stats;
++extern HASH global_table_stats;
++extern pthread_mutex_t LOCK_global_table_stats;
++extern HASH global_index_stats;
++extern pthread_mutex_t LOCK_global_index_stats;
++extern pthread_mutex_t LOCK_stats;
+ 
+ extern const char *opt_date_time_formats[];
+ extern KNOWN_DATE_TIME_FORMAT known_date_time_formats[];
+diff -r 1270c564d514 sql/mysqld.cc
+--- a/sql/mysqld.cc	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/mysqld.cc	Mon Dec 22 00:31:13 2008 -0800
+@@ -414,6 +414,7 @@
+ uint    opt_large_page_size= 0;
+ my_bool opt_old_style_user_limits= 0, trust_function_creators= 0;
+ char* opt_slow_logname= 0;
++my_bool opt_userstat_running= 0;
+ /*
+   True if there is at least one per-hour limit for some user, so we should
+   check them before each query (and possibly reset counters when hour is
+@@ -450,6 +451,7 @@
+ ulong binlog_cache_use= 0, binlog_cache_disk_use= 0;
+ ulong max_connections, max_connect_errors;
+ uint  max_user_connections= 0;
++ulonglong denied_connections = 0;
+ /*
+   Limit of the total number of prepared statements in the server.
+   Is necessary to protect the server against out-of-memory attacks.
+@@ -550,6 +552,10 @@
+ 		LOCK_crypt, LOCK_bytes_sent, LOCK_bytes_received,
+ 	        LOCK_global_system_variables,
+ 		LOCK_user_conn, LOCK_slave_list, LOCK_active_mi;
++pthread_mutex_t LOCK_stats;
++pthread_mutex_t LOCK_global_user_client_stats;
++pthread_mutex_t LOCK_global_table_stats;
++pthread_mutex_t LOCK_global_index_stats;
+ /*
+   The below lock protects access to two global server variables:
+   max_prepared_stmt_count and prepared_stmt_count. These variables
+@@ -1191,6 +1197,10 @@
+   x_free(opt_secure_file_priv);
+   bitmap_free(&temp_pool);
+   free_max_user_conn();
++  free_global_user_stats();
++  free_global_client_stats();
++  free_global_table_stats();
++  free_global_index_stats();
+ #ifdef HAVE_REPLICATION
+   end_slave_list();
+   free_list(&replicate_do_db);
+@@ -1305,6 +1315,10 @@
+   (void) pthread_cond_destroy(&COND_thread_cache);
+   (void) pthread_cond_destroy(&COND_flush_thread_cache);
+   (void) pthread_cond_destroy(&COND_manager);
++  (void) pthread_mutex_destroy(&LOCK_stats);
++  (void) pthread_mutex_destroy(&LOCK_global_user_client_stats);
++  (void) pthread_mutex_destroy(&LOCK_global_table_stats);
++  (void) pthread_mutex_destroy(&LOCK_global_index_stats);
+ }
+ 
+ #endif /*EMBEDDED_LIBRARY*/
+@@ -3152,6 +3166,10 @@
+   (void) pthread_mutex_init(&LOCK_rpl_status, MY_MUTEX_INIT_FAST);
+   (void) pthread_cond_init(&COND_rpl_status, NULL);
+ #endif
++  (void) pthread_mutex_init(&LOCK_stats, MY_MUTEX_INIT_FAST);
++  (void) pthread_mutex_init(&LOCK_global_user_client_stats, MY_MUTEX_INIT_FAST);
++  (void) pthread_mutex_init(&LOCK_global_table_stats, MY_MUTEX_INIT_FAST);
++  (void) pthread_mutex_init(&LOCK_global_index_stats, MY_MUTEX_INIT_FAST);
+   sp_cache_init();
+   /* Parameter for threads created for connections */
+   (void) pthread_attr_init(&connection_attrib);
+@@ -3423,6 +3441,10 @@
+     sql_print_error("Out of memory");
+     unireg_abort(1);
+   }
++
++  init_global_table_stats();
++  init_global_index_stats();
++
+   if (ha_init())
+   {
+     sql_print_error("Can't init databases");
+@@ -3505,6 +3527,8 @@
+ 
+   init_max_user_conn();
+   init_update_queries();
++  init_global_user_stats();
++  init_global_client_stats();
+   DBUG_RETURN(0);
+ }
+ 
+@@ -4189,6 +4213,7 @@
+   {
+     DBUG_PRINT("error",("Too many connections"));
+     close_connection(thd, ER_CON_COUNT_ERROR, 1);
++    statistic_increment(denied_connections, &LOCK_status);
+     delete thd;
+     DBUG_VOID_RETURN;
+   }
+@@ -5007,6 +5032,7 @@
+   OPT_PROFILING,
+   OPT_SLOW_LOG,
+   OPT_SLOW_QUERY_LOG_FILE,
++  OPT_USERSTAT_RUNNING,
+   OPT_USE_GLOBAL_LONG_QUERY_TIME,
+   OPT_INNODB_ROLLBACK_ON_TIMEOUT,
+   OPT_SECURE_FILE_PRIV,
+@@ -6450,6 +6476,10 @@
+    (gptr*) &max_system_variables.net_wait_timeout, 0, GET_ULONG,
+    REQUIRED_ARG, NET_WAIT_TIMEOUT, 1, IF_WIN(INT_MAX32/1000, LONG_TIMEOUT),
+    0, 1, 0},
++  {"userstat_running", OPT_USERSTAT_RUNNING,
++   "Control USER_STATISTICS, CLIENT_STATISTICS, INDEX_STATISTICS and TABLE_STATISTICS running",
++   (gptr*) &opt_userstat_running, (gptr*) &opt_userstat_running,
++   0, GET_BOOL, NO_ARG, 0, 0, 1, 0, 1, 0},
+   {0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}
+ };
+ 
+diff -r 1270c564d514 sql/set_var.cc
+--- a/sql/set_var.cc	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/set_var.cc	Mon Dec 22 00:31:13 2008 -0800
+@@ -323,6 +323,7 @@
+ sys_var_thd_ulong	sys_read_buff_size("read_buffer_size",
+ 					   &SV::read_buff_size);
+ sys_var_bool_ptr	sys_readonly("read_only", &opt_readonly);
++sys_var_bool_ptr	sys_userstat_running("userstat_running", &opt_userstat_running);
+ sys_var_thd_ulong	sys_read_rnd_buff_size("read_rnd_buffer_size",
+ 					       &SV::read_rnd_buff_size);
+ sys_var_thd_ulong	sys_div_precincrement("div_precision_increment",
+@@ -825,6 +826,7 @@
+   &sys_trans_alloc_block_size,
+   &sys_trans_prealloc_size,
+   &sys_tx_isolation,
++  &sys_userstat_running,
+   &sys_version,
+ #ifdef HAVE_BERKELEY_DB
+   &sys_version_bdb,
+@@ -1171,6 +1173,7 @@
+   {sys_tx_isolation.name,     (char*) &sys_tx_isolation,	    SHOW_SYS},
+   {sys_updatable_views_with_limit.name,
+                               (char*) &sys_updatable_views_with_limit,SHOW_SYS},
++  {sys_userstat_running.name, (char*) &sys_userstat_running,        SHOW_SYS},
+   {sys_use_global_long_query_time.name, (char*) &sys_use_global_long_query_time, SHOW_SYS},
+   {sys_version.name,          (char*) &sys_version,                 SHOW_SYS},
+ #ifdef HAVE_BERKELEY_DB
+diff -r 1270c564d514 sql/share/Makefile.in
+--- a/sql/share/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/share/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -167,6 +167,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 sql/sql_base.cc
+--- a/sql/sql_base.cc	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/sql_base.cc	Mon Dec 22 00:31:13 2008 -0800
+@@ -624,6 +624,12 @@
+   DBUG_ENTER("close_thread_table");
+   DBUG_ASSERT(table->key_read == 0);
+   DBUG_ASSERT(!table->file || table->file->inited == handler::NONE);
++  
++  if(table->file)
++  {
++    table->file->update_global_table_stats();
++    table->file->update_global_index_stats();
++  }
+ 
+   *table_ptr=table->next;
+   if (table->needs_reopen_or_name_lock() ||
+@@ -670,6 +676,9 @@
+ {
+   DBUG_ENTER("close_temporary");
+   char path[FN_REFLEN];
++
++  table->file->update_global_table_stats();
++  table->file->update_global_index_stats();
+   db_type table_type=table->s->db_type;
+   strmov(path,table->s->path);
+   free_io_cache(table);
+diff -r 1270c564d514 sql/sql_class.cc
+--- a/sql/sql_class.cc	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/sql_class.cc	Mon Dec 22 00:31:13 2008 -0800
+@@ -236,6 +236,13 @@
+   bzero(ha_data, sizeof(ha_data));
+   mysys_var=0;
+   binlog_evt_union.do_union= FALSE;
++  busy_time = 0;
++  cpu_time = 0;
++  bytes_received = 0;
++  bytes_sent = 0;
++  binlog_bytes_written = 0;
++  updated_row_count = 0;
++  sent_row_count_2 = 0;
+ #ifndef DBUG_OFF
+   dbug_sentry=THD_SENTRY_MAGIC;
+ #endif
+@@ -369,6 +376,88 @@
+   total_warn_count= 0;
+   update_charset();
+   bzero((char *) &status_var, sizeof(status_var));
++  reset_stats();
++}
++
++// Resets stats in a THD.
++void THD::reset_stats(void) {
++  current_connect_time = time(NULL);
++  last_global_update_time = current_connect_time;
++  reset_diff_stats();
++}
++
++// Resets the 'diff' stats, which are used to update global stats.
++void THD::reset_diff_stats(void) {
++  diff_total_busy_time = 0;
++  diff_total_cpu_time = 0;
++  diff_total_bytes_received = 0;
++  diff_total_bytes_sent = 0;
++  diff_total_binlog_bytes_written = 0;
++  diff_total_sent_rows = 0;
++  diff_total_updated_rows = 0;
++  diff_total_read_rows = 0;
++  diff_select_commands = 0;
++  diff_update_commands = 0;
++  diff_other_commands = 0;
++  diff_commit_trans = 0;
++  diff_rollback_trans = 0;
++  diff_denied_connections = 0;
++  diff_lost_connections = 0;
++  diff_access_denied_errors = 0;
++  diff_empty_queries = 0;
++}
++
++// Updates 'diff' stats of a THD.
++void THD::update_stats(bool ran_command) {
++  if (opt_userstat_running) {
++  diff_total_busy_time += busy_time;
++  diff_total_cpu_time += cpu_time;
++  diff_total_bytes_received += bytes_received;
++  diff_total_bytes_sent += bytes_sent;
++  diff_total_binlog_bytes_written += binlog_bytes_written;
++  diff_total_sent_rows += sent_row_count_2;
++  diff_total_updated_rows += updated_row_count;
++  // diff_total_read_rows is updated in handler.cc.
++
++  if (ran_command) {
++    // The replication thread has the COM_CONNECT command.
++    if ((old_command == COM_QUERY || command == COM_CONNECT) &&
++        (lex->sql_command >= 0 && lex->sql_command < SQLCOM_END)) {
++      // A SQL query.
++      if (lex->sql_command == SQLCOM_SELECT) {
++        if (lex->orig_sql_command == SQLCOM_END) {
++          diff_select_commands++;
++          if (!sent_row_count_2)
++            diff_empty_queries++;
++        } else {
++          // 'SHOW ' commands become SQLCOM_SELECT.
++          diff_other_commands++;
++          // 'SHOW ' commands shouldn't inflate total sent row count.
++          diff_total_sent_rows -= sent_row_count_2;
++        }
++      } else if (is_update_query(lex->sql_command)) {
++        diff_update_commands++;
++      } else {
++        diff_other_commands++;
++      }
++    }
++  }
++  // diff_commit_trans is updated in handler.cc.
++  // diff_rollback_trans is updated in handler.cc.
++  // diff_denied_connections is updated in sql_parse.cc.
++  // diff_lost_connections is updated in sql_parse.cc.
++  // diff_access_denied_errors is updated in sql_parse.cc.
++
++  /* reset counters to zero to avoid double-counting since values
++     are already store in diff_total_*. */
++  }
++  busy_time = 0;
++  cpu_time = 0;
++  bytes_received = 0;
++  bytes_sent = 0;
++  binlog_bytes_written = 0;
++  updated_row_count = 0;
++  sent_row_count_2 = 0;
+ }
+ 
+ 
+@@ -408,6 +497,9 @@
+ 
+ void THD::change_user(void)
+ {
++  pthread_mutex_lock(&LOCK_status);
++  add_to_status(&global_status_var, &status_var);
++  pthread_mutex_unlock(&LOCK_status);
+   cleanup();
+   cleanup_done= 0;
+   init();
+@@ -892,6 +984,33 @@
+ }
+ #endif
+ 
++char *THD::get_client_host_port(THD *client)
++{
++  Security_context *client_sctx= client->security_ctx;
++  char *client_host= NULL;
++
++  if (client->peer_port && (client_sctx->host || client_sctx->ip) &&
++      security_ctx->host_or_ip[0])
++  {
++    if ((client_host= this->alloc(LIST_PROCESS_HOST_LEN+1)))
++      my_snprintf((char *) client_host, LIST_PROCESS_HOST_LEN,
++                  "%s:%u", client_sctx->host_or_ip, client->peer_port);
++  }
++  else
++    client_host= this->strdup(client_sctx->host_or_ip[0] ?
++                              client_sctx->host_or_ip :
++                              client_sctx->host ? client_sctx->host : "");
++
++  return client_host;
++}
++
++const char *get_client_host(THD *client)
++{
++  return client->security_ctx->host_or_ip[0] ?
++      client->security_ctx->host_or_ip :
++      client->security_ctx->host ? client->security_ctx->host : "";
++}
++
+ 
+ struct Item_change_record: public ilink
+ {
+@@ -1062,6 +1181,7 @@
+     }
+   }
+   thd->sent_row_count++;
++  thd->sent_row_count_2++;
+   if (!thd->vio_ok())
+     DBUG_RETURN(0);
+   if (!thd->net.report_error)
+@@ -1154,6 +1274,7 @@
+ select_export::~select_export()
+ {
+   thd->sent_row_count=row_count;
++  thd->sent_row_count_2=row_count;
+ }
+ 
+ 
+@@ -2088,6 +2209,7 @@
+   if (likely(thd != 0))
+   { /* current_thd==0 when close_connection() calls net_send_error() */
+     thd->status_var.bytes_sent+= length;
++    thd->bytes_sent+= length;
+   }
+ }
+ 
+@@ -2095,6 +2217,7 @@
+ void thd_increment_bytes_received(ulong length)
+ {
+   current_thd->status_var.bytes_received+= length;
++  current_thd->bytes_received+= length;
+ }
+ 
+ 
+diff -r 1270c564d514 sql/sql_class.h
+--- a/sql/sql_class.h	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/sql_class.h	Mon Dec 22 00:31:13 2008 -0800
+@@ -1298,6 +1298,8 @@
+     first byte of the packet in do_command()
+   */
+   enum enum_server_command command;
++  // Used to save the command, before it is set to COM_SLEEP.
++  enum enum_server_command old_command;
+   uint32     server_id;
+   uint32     file_id;			// for LOAD DATA INFILE
+   /*
+@@ -1487,6 +1489,8 @@
+   /* variables.transaction_isolation is reset to this after each commit */
+   enum_tx_isolation session_tx_isolation;
+   enum_check_fields count_cuted_fields;
++  ha_rows    updated_row_count;
++  ha_rows    sent_row_count_2; /* for userstat */
+ 
+   DYNAMIC_ARRAY user_var_events;        /* For user variables replication */
+   MEM_ROOT      *user_var_events_alloc; /* Allocate above array elements here */
+@@ -1593,6 +1597,49 @@
+   */
+   LOG_INFO*  current_linfo;
+   NET*       slave_net;			// network connection from slave -> m.
++
++  /*
++    Used to update global user stats.  The global user stats are updated
++    occasionally with the 'diff' variables.  After the update, the 'diff'
++    variables are reset to 0.
++   */
++  // Time when the current thread connected to MySQL.
++  time_t current_connect_time;
++  // Last time when THD stats were updated in global_user_stats.
++  time_t last_global_update_time;
++  // Busy (non-idle) time for just one command.
++  double busy_time;
++  // Busy time not updated in global_user_stats yet.
++  double diff_total_busy_time;
++  // Cpu (non-idle) time for just one thread.
++  double cpu_time;
++  // Cpu time not updated in global_user_stats yet.
++  double diff_total_cpu_time;
++  /* bytes counting */
++  ulonglong bytes_received;
++  ulonglong diff_total_bytes_received;
++  ulonglong bytes_sent;
++  ulonglong diff_total_bytes_sent;
++  ulonglong binlog_bytes_written;
++  ulonglong diff_total_binlog_bytes_written;
++
++  // Number of rows not reflected in global_user_stats yet.
++  ha_rows diff_total_sent_rows, diff_total_updated_rows, diff_total_read_rows;
++  // Number of commands not reflected in global_user_stats yet.
++  ulonglong diff_select_commands, diff_update_commands, diff_other_commands;
++  // Number of transactions not reflected in global_user_stats yet.
++  ulonglong diff_commit_trans, diff_rollback_trans;
++  // Number of connection errors not reflected in global_user_stats yet.
++  ulonglong diff_denied_connections, diff_lost_connections;
++  // Number of db access denied, not reflected in global_user_stats yet.
++  ulonglong diff_access_denied_errors;
++  // Number of queries that return 0 rows
++  ulonglong diff_empty_queries;
++
++  // Per account query delay in miliseconds. When not 0, sleep this number of
++  // milliseconds before every SQL command.
++  ulonglong query_delay_millis;
++
+   /* Used by the sys_var class to store temporary values */
+   union
+   {
+@@ -1648,6 +1695,11 @@
+     alloc_root.
+   */
+   void init_for_queries();
++  void reset_stats(void);
++  void reset_diff_stats(void);
++  // ran_command is true when this is called immediately after a
++  // command has been run.
++  void update_stats(bool ran_command);
+   void change_user(void);
+   void cleanup(void);
+   void cleanup_after_query();
+@@ -1877,7 +1929,13 @@
+     if (p_db_length)
+       *p_db_length= db_length;
+     return FALSE;
++
++  // Returns string as 'IP:port' for the client-side of the connnection represented
++  // by 'client' as displayed by SHOW PROCESSLIST. Allocates memory from the heap of
++  // this THD and that is not reclaimed immediately, so use sparingly. May return NULL.
+   }
++
++  char *get_client_host_port(THD *client);
+ 
+ public:
+   /**
+@@ -1921,6 +1979,11 @@
+   MEM_ROOT main_mem_root;
+ };
+ 
++// Returns string as 'IP' for the client-side of the connection represented by
++// 'client'. Does not allocate memory. May return "".
++const char *get_client_host(THD *client);
++
++#define LIST_PROCESS_HOST_LEN 64
+ 
+ #define tmp_disable_binlog(A)       \
+   {ulonglong tmp_disable_binlog__save_options= (A)->options; \
+diff -r 1270c564d514 sql/sql_delete.cc
+--- a/sql/sql_delete.cc	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/sql_delete.cc	Mon Dec 22 00:31:13 2008 -0800
+@@ -358,6 +358,7 @@
+     send_ok(thd,deleted);
+     DBUG_PRINT("info",("%ld records deleted",(long) deleted));
+   }
++  thd->updated_row_count += deleted;
+   DBUG_RETURN(error >= 0 || thd->net.report_error);
+ }
+ 
+@@ -869,6 +870,7 @@
+     thd->row_count_func= deleted;
+     ::send_ok(thd, deleted);
+   }
++  thd->updated_row_count += deleted;
+   return 0;
+ }
+ 
+diff -r 1270c564d514 sql/sql_insert.cc
+--- a/sql/sql_insert.cc	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/sql_insert.cc	Mon Dec 22 00:31:13 2008 -0800
+@@ -989,6 +989,7 @@
+     thd->row_count_func= info.copied + info.deleted + updated;
+     ::send_ok(thd, (ulong) thd->row_count_func, id, buff);
+   }
++  thd->updated_row_count += thd->row_count_func;
+   thd->abort_on_warning= 0;
+   DBUG_RETURN(FALSE);
+ 
+@@ -3036,6 +3037,7 @@
+     autoinc_value_of_first_inserted_row : thd->insert_id_used ?
+     thd->last_insert_id : 0;
+   ::send_ok(thd, (ulong) thd->row_count_func, id, buff);
++  thd->updated_row_count += thd->row_count_func;
+   DBUG_RETURN(0);
+ }
+ 
+diff -r 1270c564d514 sql/sql_lex.h
+--- a/sql/sql_lex.h	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/sql_lex.h	Mon Dec 22 00:31:13 2008 -0800
+@@ -101,6 +101,9 @@
+     When a command is added here, be sure it's also added in mysqld.cc
+     in "struct show_var_st status_vars[]= {" ...
+   */
++  // TODO(mcallaghan): update status_vars in mysqld to export these
++  SQLCOM_SHOW_USER_STATS, SQLCOM_SHOW_TABLE_STATS, SQLCOM_SHOW_INDEX_STATS,
++  SQLCOM_SHOW_CLIENT_STATS,
+   /* This should be the last !!! */
+   SQLCOM_END
+ };
+diff -r 1270c564d514 sql/sql_parse.cc
+--- a/sql/sql_parse.cc	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/sql_parse.cc	Mon Dec 22 00:31:13 2008 -0800
+@@ -78,6 +78,12 @@
+ 			       const char *table_name);
+ static bool check_show_create_table_access(THD *thd, TABLE_LIST *table);
+ 
++// Increments connection count for user.
++static int increment_connection_count(THD* thd, bool use_lock);
++
++// Uses the THD to update the global stats by user name and client IP
++void update_global_user_stats(THD* thd, bool create_user, time_t now);
++
+ const char *any_db="*any*";	// Special symbol for check_access
+ 
+ const char *command_name[]={
+@@ -145,6 +151,17 @@
+ #ifndef EMBEDDED_LIBRARY
+ static bool do_command(THD *thd);
+ #endif // EMBEDDED_LIBRARY
++
++HASH global_user_stats;
++HASH global_client_stats;
++// Protects global_user_stats and global_client_stats
++extern pthread_mutex_t LOCK_global_user_client_stats;
++
++HASH global_table_stats;
++extern pthread_mutex_t LOCK_global_table_stats;
++
++HASH global_index_stats;
++extern pthread_mutex_t LOCK_global_index_stats;
+ 
+ #ifdef __WIN__
+ extern void win_install_sigabrt_handler(void);
+@@ -504,6 +521,7 @@
+     mysql_log.write(thd,COM_CONNECT,ER(ER_NOT_SUPPORTED_AUTH_MODE));
+     DBUG_RETURN(-1);
+   }
++  thd->diff_access_denied_errors++;
+   net_printf_error(thd, ER_ACCESS_DENIED_ERROR,
+                    thd->main_security_ctx.user,
+                    thd->main_security_ctx.host_or_ip,
+@@ -536,12 +554,190 @@
+ void init_max_user_conn(void)
+ {
+ #ifndef NO_EMBEDDED_ACCESS_CHECKS
+-  (void) hash_init(&hash_user_connections,system_charset_info,max_connections,
+-		   0,0,
+-		   (hash_get_key) get_key_conn, (hash_free_key) free_user,
+-		   0);
+-#endif
+-}
++  if (hash_init(&hash_user_connections,system_charset_info,max_connections,
++                0,0,
++                (hash_get_key) get_key_conn, (hash_free_key) free_user,
++                0)) {
++    sql_print_error("Initializing hash_user_connections failed.");
++    exit(1);
++  }
++#endif
++}
++
++byte *get_key_user_stats(USER_STATS *user_stats, uint *length,
++                         my_bool not_used __attribute__((unused)))
++{
++  *length = strlen(user_stats->user);
++  return (byte*)user_stats->user;
++}
++
++void free_user_stats(USER_STATS* user_stats)
++{
++  my_free((char*)user_stats, MYF(0));
++}
++
++void init_user_stats(USER_STATS *user_stats,
++                     const char *user,
++                     const char *priv_user,
++                     uint total_connections,
++                     uint concurrent_connections,
++                     time_t connected_time,
++                     double busy_time,
++                     double cpu_time,
++                     ulonglong bytes_received,
++                     ulonglong bytes_sent,
++                     ulonglong binlog_bytes_written,
++                     ha_rows rows_fetched,
++                     ha_rows rows_updated,
++                     ha_rows rows_read,
++                     ulonglong select_commands,
++                     ulonglong update_commands,
++                     ulonglong other_commands,
++                     ulonglong commit_trans,
++                     ulonglong rollback_trans,
++                     ulonglong denied_connections,
++                     ulonglong lost_connections,
++                     ulonglong access_denied_errors,
++                     ulonglong empty_queries)
++{
++  DBUG_ENTER("init_user_stats");
++  DBUG_PRINT("info",
++             ("Add user_stats entry for user %s - priv_user %s",
++              user, priv_user));
++  strncpy(user_stats->user, user, sizeof(user_stats->user));
++  strncpy(user_stats->priv_user, priv_user, sizeof(user_stats->priv_user));
++
++  user_stats->total_connections = total_connections;
++  user_stats->concurrent_connections = concurrent_connections;
++  user_stats->connected_time = connected_time;
++  user_stats->busy_time = busy_time;
++  user_stats->cpu_time = cpu_time;
++  user_stats->bytes_received = bytes_received;
++  user_stats->bytes_sent = bytes_sent;
++  user_stats->binlog_bytes_written = binlog_bytes_written;
++  user_stats->rows_fetched = rows_fetched;
++  user_stats->rows_updated = rows_updated;
++  user_stats->rows_read = rows_read;
++  user_stats->select_commands = select_commands;
++  user_stats->update_commands = update_commands;
++  user_stats->other_commands = other_commands;
++  user_stats->commit_trans = commit_trans;
++  user_stats->rollback_trans = rollback_trans;
++  user_stats->denied_connections = denied_connections;
++  user_stats->lost_connections = lost_connections;
++  user_stats->access_denied_errors = access_denied_errors;
++  user_stats->empty_queries = empty_queries;
++  DBUG_VOID_RETURN;
++}
++
++void add_user_stats(USER_STATS *user_stats,
++                    uint total_connections,
++                    uint concurrent_connections,
++                    time_t connected_time,
++                    double busy_time,
++                    double cpu_time,
++                    ulonglong bytes_received,
++                    ulonglong bytes_sent,
++                    ulonglong binlog_bytes_written,
++                    ha_rows rows_fetched,
++                    ha_rows rows_updated,
++                    ha_rows rows_read,
++                    ulonglong select_commands,
++                    ulonglong update_commands,
++                    ulonglong other_commands,
++                    ulonglong commit_trans,
++                    ulonglong rollback_trans,
++                    ulonglong denied_connections,
++                    ulonglong lost_connections,
++                    ulonglong access_denied_errors,
++                    ulonglong empty_queries)
++{
++  user_stats->total_connections += total_connections;
++  user_stats->concurrent_connections += concurrent_connections;
++  user_stats->connected_time += connected_time;
++  user_stats->busy_time += busy_time;
++  user_stats->cpu_time += cpu_time;
++  user_stats->bytes_received += bytes_received;
++  user_stats->bytes_sent += bytes_sent;
++  user_stats->binlog_bytes_written += binlog_bytes_written;
++  user_stats->rows_fetched += rows_fetched;
++  user_stats->rows_updated += rows_updated;
++  user_stats->rows_read += rows_read;
++  user_stats->select_commands += select_commands;
++  user_stats->update_commands += update_commands;
++  user_stats->other_commands += other_commands;
++  user_stats->commit_trans += commit_trans;
++  user_stats->rollback_trans += rollback_trans;
++  user_stats->denied_connections += denied_connections;
++  user_stats->lost_connections += lost_connections;
++  user_stats->access_denied_errors += access_denied_errors;
++  user_stats->empty_queries += empty_queries;
++}
++
++void init_global_user_stats(void)
++{
++  if (hash_init(&global_user_stats, system_charset_info, max_connections,
++                0, 0, (hash_get_key)get_key_user_stats,
++                (hash_free_key)free_user_stats, 0)) {
++    sql_print_error("Initializing global_user_stats failed.");
++    exit(1);
++  }
++}
++
++void init_global_client_stats(void)
++{
++  if (hash_init(&global_client_stats, system_charset_info, max_connections,
++                0, 0, (hash_get_key)get_key_user_stats,
++                (hash_free_key)free_user_stats, 0)) {
++    sql_print_error("Initializing global_client_stats failed.");
++    exit(1);
++  }
++}
++
++extern "C" byte *get_key_table_stats(TABLE_STATS *table_stats, uint *length,
++                                     my_bool not_used __attribute__((unused)))
++{
++  *length = strlen(table_stats->table);
++  return (byte*)table_stats->table;
++}
++
++extern "C" void free_table_stats(TABLE_STATS* table_stats)
++{
++  my_free((char*)table_stats, MYF(0));
++}
++
++void init_global_table_stats(void)
++{
++  if (hash_init(&global_table_stats, system_charset_info, max_connections,
++                0, 0, (hash_get_key)get_key_table_stats,
++                (hash_free_key)free_table_stats, 0)) {
++    sql_print_error("Initializing global_table_stats failed.");
++    exit(1);
++  }
++}
++
++extern "C" byte *get_key_index_stats(INDEX_STATS *index_stats, uint *length,
++                                     my_bool not_used __attribute__((unused)))
++{
++  *length = strlen(index_stats->index);
++  return (byte*)index_stats->index;
++}
++
++extern "C" void free_index_stats(INDEX_STATS* index_stats)
++{
++  my_free((char*)index_stats, MYF(0));
++}
++
++void init_global_index_stats(void)
++{
++  if (hash_init(&global_index_stats, system_charset_info, max_connections,
++                0, 0, (hash_get_key)get_key_index_stats,
++                (hash_free_key)free_index_stats, 0)) {
++    sql_print_error("Initializing global_index_stats failed.");
++    exit(1);
++  }
++}
++
+ 
+ 
+ /*
+@@ -599,7 +795,10 @@
+ 
+   end:
+   if (error)
++  {
++    statistic_increment(denied_connections, &LOCK_status);
+     uc->connections--; // no need for decrease_user_connections() here
++  }
+   (void) pthread_mutex_unlock(&LOCK_user_conn);
+   DBUG_RETURN(error);
+ }
+@@ -646,6 +845,25 @@
+ #endif /* NO_EMBEDDED_ACCESS_CHECKS */
+ }
+ 
++void free_global_user_stats(void)
++{
++  hash_free(&global_user_stats);
++}
++
++void free_global_table_stats(void)
++{
++  hash_free(&global_table_stats);
++}
++
++void free_global_index_stats(void)
++{
++  hash_free(&global_index_stats);
++}
++
++void free_global_client_stats(void)
++{
++  hash_free(&global_client_stats);
++}
+ 
+ 
+ /*
+@@ -698,6 +916,214 @@
+   return uc_update_queries[command] != 0;
+ }
+ 
++// 'mysql_system_user' is used for when the user is not defined for a THD.
++static char mysql_system_user[] = "#mysql_system#";
++
++// Returns 'user' if it's not NULL.  Returns 'mysql_system_user' otherwise.
++static char* get_valid_user_string(char* user) {
++  return user ? user : mysql_system_user;
++}
++
++// Increments the global stats connection count for an entry from
++// global_client_stats or global_user_stats. Returns 0 on success
++// and 1 on error.
++static int increment_count_by_name(const char *name, const char *role_name,
++                                   HASH *users_or_clients, THD *thd)
++{
++  USER_STATS* user_stats;
++
++  if (!(user_stats = (USER_STATS*)hash_search(users_or_clients, name,
++                                              strlen(name))))
++  {
++    // First connection for this user or client
++    if (!(user_stats = ((USER_STATS*)
++                        my_malloc(sizeof(USER_STATS), MYF(MY_WME | MY_ZEROFILL)))))
++    {
++      return 1; // Out of memory
++    }
++
++    init_user_stats(user_stats, name, role_name,
++                    0, 0,      // connections
++                    0, 0, 0,   // time
++                    0, 0, 0,   // bytes sent, received and written
++                    0, 0, 0,   // rows fetched, updated and read
++                    0, 0, 0,   // select, update and other commands
++                    0, 0,      // commit and rollback trans
++                    thd->diff_denied_connections,
++                    0,         // lost connections
++                    0,         // access denied errors
++                    0);        // empty queries
++
++    if (my_hash_insert(users_or_clients, (byte*)user_stats))
++    {
++      my_free((char*)user_stats, 0);
++      return 1; // Out of memory
++    }
++  }
++  user_stats->total_connections++;
++  return 0;
++}
++
++// Increments the global user and client stats connection count.  If 'use_lock'
++// is true, LOCK_global_user_client_stats will be locked/unlocked.  Returns
++// 0 on success, 1 on error.
++static int increment_connection_count(THD* thd, bool use_lock)
++{
++  char* user_string = get_valid_user_string(thd->main_security_ctx.user);
++  const char* client_string = get_client_host(thd);
++  int return_value = 0;
++
++  if (!opt_userstat_running)
++    return return_value;
++
++  if (use_lock) pthread_mutex_lock(&LOCK_global_user_client_stats);
++
++  if (increment_count_by_name(user_string, user_string,
++                              &global_user_stats, thd))
++  {
++    return_value = 1;
++    goto end;
++  }
++  if (increment_count_by_name(client_string,
++                              user_string,
++                              &global_client_stats, thd))
++  {
++    return_value = 1;
++    goto end;
++  }
++
++end:
++  if (use_lock) pthread_mutex_unlock(&LOCK_global_user_client_stats);
++  return return_value;
++}
++
++// Used to update the global user and client stats.
++static void update_global_user_stats_with_user(THD* thd,
++                                               USER_STATS* user_stats,
++                                               time_t now)
++{
++  user_stats->connected_time += now - thd->last_global_update_time;
++  thd->last_global_update_time = now;
++  user_stats->busy_time += thd->diff_total_busy_time;
++  user_stats->cpu_time += thd->diff_total_cpu_time;
++  user_stats->bytes_received += thd->diff_total_bytes_received;
++  user_stats->bytes_sent += thd->diff_total_bytes_sent;
++  user_stats->binlog_bytes_written += thd->diff_total_binlog_bytes_written;
++  user_stats->rows_fetched += thd->diff_total_sent_rows;
++  user_stats->rows_updated += thd->diff_total_updated_rows;
++  user_stats->rows_read += thd->diff_total_read_rows;
++  user_stats->select_commands += thd->diff_select_commands;
++  user_stats->update_commands += thd->diff_update_commands;
++  user_stats->other_commands += thd->diff_other_commands;
++  user_stats->commit_trans += thd->diff_commit_trans;
++  user_stats->rollback_trans += thd->diff_rollback_trans;
++  user_stats->denied_connections += thd->diff_denied_connections;
++  user_stats->lost_connections += thd->diff_lost_connections;
++  user_stats->access_denied_errors += thd->diff_access_denied_errors;
++  user_stats->empty_queries += thd->diff_empty_queries;
++}
++
++// Updates the global stats of a user or client
++void update_global_user_stats(THD* thd, bool create_user, time_t now)
++{
++  if (opt_userstat_running) {
++  char* user_string = get_valid_user_string(thd->main_security_ctx.user);
++  const char* client_string = get_client_host(thd);
++
++  USER_STATS* user_stats;
++  pthread_mutex_lock(&LOCK_global_user_client_stats);
++
++  // Update by user name
++  if ((user_stats = (USER_STATS*)hash_search(&global_user_stats,
++                                             (byte*)user_string,
++                                             strlen(user_string)))) {
++    // Found user.
++    update_global_user_stats_with_user(thd, user_stats, now);
++  } else {
++    // Create the entry
++    if (create_user) {
++      increment_count_by_name(user_string, user_string,
++                              &global_user_stats, thd);
++    }
++  }
++
++  // Update by client IP
++  if ((user_stats = (USER_STATS*)hash_search(&global_client_stats,
++                                             (byte*)client_string,
++                                             strlen(client_string)))) {
++    // Found by client IP
++    update_global_user_stats_with_user(thd, user_stats, now);
++  } else {
++    // Create the entry
++    if (create_user) {
++      increment_count_by_name(client_string,
++                              user_string,
++                              &global_client_stats, thd);
++    }
++  }
++  thd->reset_diff_stats();
++
++  pthread_mutex_unlock(&LOCK_global_user_client_stats);
++  } else {
++  thd->reset_diff_stats();
++  }
++}
++
++// Determines the concurrent number of connections of current threads.
++static void set_connections_stats()
++{
++  USER_STATS* user_stats;
++
++  pthread_mutex_lock(&LOCK_global_user_client_stats);
++  pthread_mutex_lock(&LOCK_thread_count);
++
++  // Resets all concurrent connections to 0.
++  for (int i = 0; i < global_user_stats.records; ++i) {
++    user_stats = (USER_STATS*)hash_element(&global_user_stats, i);
++    user_stats->concurrent_connections = 0;
++  }
++  for (int i = 0; i < global_client_stats.records; ++i) {
++    user_stats = (USER_STATS*)hash_element(&global_client_stats, i);
++    user_stats->concurrent_connections = 0;
++  }
++
++  I_List_iterator<THD> it(threads);
++  THD* thd;
++  time_t now = time(NULL);
++  // Iterates through the current threads.
++  while ((thd = it++)) {
++    char* user_string = get_valid_user_string(thd->main_security_ctx.user);
++    if ((user_stats = (USER_STATS*)hash_search(&global_user_stats,
++                                               (byte*)user_string,
++                                               strlen(user_string)))) {
++      // Found user.
++      user_stats->concurrent_connections++;
++      update_global_user_stats_with_user(thd, user_stats, now);
++    } else {
++      // The user name should exist.
++      if (user_string == mysql_system_user) {
++        // Only create the user if it is the mysql_system_user
++        increment_count_by_name(user_string, user_string,
++                                &global_user_stats, thd);
++      }
++    }
++
++    const char* client_string = get_client_host(thd);
++    if ((user_stats = (USER_STATS*)hash_search(&global_client_stats,
++                                               (byte*)client_string,
++                                               strlen(client_string)))) {
++      // Found user.
++      user_stats->concurrent_connections++;
++      update_global_user_stats_with_user(thd, user_stats, now);
++    } else {
++      // Do nothing, unlike what is done for global_user_stats
++    }
++    thd->reset_diff_stats();
++  }
++  pthread_mutex_unlock(&LOCK_thread_count);
++  pthread_mutex_unlock(&LOCK_global_user_client_stats);
++}
++
+ /*
+   Reset per-hour user resource limits when it has been more than
+   an hour since they were last checked
+@@ -1184,6 +1607,8 @@
+     my_net_set_read_timeout(net, connect_timeout);
+     my_net_set_write_timeout(net, connect_timeout);
+ 
++    bool create_user = true;
++
+     if ((error=check_connection(thd)))
+     {						// Wrong permissions
+       if (error > 0)
+@@ -1193,8 +1618,22 @@
+ 	my_sleep(1000);				/* must wait after eof() */
+ #endif
+       statistic_increment(aborted_connects,&LOCK_status);
++      thd->diff_denied_connections++;
++      if (error == -2) {
++        // Do not create statistics for a user who does not exist, or failed
++        // to authenticate.
++        create_user = false;
++      }
+       goto end_thread;
+     }
++
++    thd->reset_stats();
++    // Updates global user connection stats.
++    if (increment_connection_count(thd, true)) {
++      net_send_error(thd, ER_OUTOFMEMORY);  // Out of memory
++      goto end_thread;
++    }
++
+ #ifdef __NETWARE__
+     netware_reg_user(sctx->ip, sctx->user, "MySQL");
+ #endif
+@@ -1251,6 +1690,7 @@
+         net->vio && net->error && net->report_error)
+     {
+       statistic_increment(aborted_threads, &LOCK_status);
++      thd->diff_lost_connections++;
+     }
+ 
+     if (net->error && net->vio != 0 && net->report_error)
+@@ -1270,6 +1710,8 @@
+ 
+ end_thread:
+     close_connection(thd, 0, 1);
++    thd->update_stats(false);
++    update_global_user_stats(thd, create_user, time(NULL));
+     end_thread(thd,1);
+     /*
+       If end_thread returns, we are either running with --one-thread
+@@ -1601,6 +2043,13 @@
+ 
+   thd->clear_error();				// Clear error message
+ 
++  thd->updated_row_count=0;
++  thd->busy_time=0;
++  thd->cpu_time=0;
++  thd->bytes_received=0;
++  thd->bytes_sent=0;
++  thd->binlog_bytes_written=0;
++
+   net_new_transaction(net);
+ 
+   packet_length= my_net_read(net);
+@@ -1759,6 +2208,9 @@
+   }
+ 
+   thd->command=command;
++  // To increment the corrent command counter for user stats, 'command' must
++  // be saved because it is set to COM_SLEEP at the end of this function.
++  thd->old_command = command;
+   /*
+     Commands which always take a long time are logged into
+     the slow log only if opt_log_slow_admin_statements is set.
+@@ -4424,6 +4876,15 @@
+     if (check_global_access(thd,RELOAD_ACL))
+       goto error;
+ 
++    if(lex->type & REFRESH_SLOW_QUERY_LOG) {
++        /* We are only flushing slow query log */
++        mysql_slow_log.new_file(1);
++    
++        send_ok(thd);
++        break;
++    }
++
++
+     /*
+       reload_acl_and_cache() will tell us if we are allowed to write to the
+       binlog or not.
+@@ -4731,6 +5192,7 @@
+     {
+       if (check_global_access(thd, SUPER_ACL))
+       {
++        thd->diff_access_denied_errors++;
+         my_error(ER_SPECIFIC_ACCESS_DENIED_ERROR, MYF(0), "SUPER");
+         goto create_sp_error;
+       }
+@@ -5567,6 +6029,7 @@
+       if (!no_errors)
+       {
+         const char *db_name= db ? db : thd->db;
++        thd->diff_access_denied_errors++;
+         my_error(ER_DBACCESS_DENIED_ERROR, MYF(0),
+                  sctx->priv_user, sctx->priv_host, db_name);
+       }
+@@ -5602,6 +6065,7 @@
+   {						// We can never grant this
+     DBUG_PRINT("error",("No possible access"));
+     if (!no_errors)
++      thd->diff_access_denied_errors++;
+       my_error(ER_ACCESS_DENIED_ERROR, MYF(0),
+                sctx->priv_user,
+                sctx->priv_host,
+@@ -5634,11 +6098,15 @@
+ 
+   DBUG_PRINT("error",("Access denied"));
+   if (!no_errors)
++  {
++    // increment needs !no_errors condition, otherwise double counting.
++    thd->diff_access_denied_errors++;
+     my_error(ER_DBACCESS_DENIED_ERROR, MYF(0),
+              sctx->priv_user, sctx->priv_host,
+              (db ? db : (thd->db ?
+                          thd->db :
+                          "unknown")));          /* purecov: tested */
++  }
+   DBUG_RETURN(TRUE);				/* purecov: tested */
+ #endif /* NO_EMBEDDED_ACCESS_CHECKS */
+ }
+@@ -5672,6 +6140,7 @@
+   if ((thd->security_ctx->master_access & want_access))
+     return 0;
+   get_privilege_desc(command, sizeof(command), want_access);
++  thd->diff_access_denied_errors++;
+   my_error(ER_SPECIFIC_ACCESS_DENIED_ERROR, MYF(0), command);
+   return 1;
+ #endif /* NO_EMBEDDED_ACCESS_CHECKS */
+@@ -5704,6 +6173,7 @@
+ 
+       if (!thd->col_access && check_grant_db(thd, dst_db_name))
+       {
++        thd->diff_access_denied_errors++;
+         my_error(ER_DBACCESS_DENIED_ERROR, MYF(0),
+                  thd->security_ctx->priv_user,
+                  thd->security_ctx->priv_host,
+@@ -5735,6 +6205,12 @@
+              check_grant(thd, SELECT_ACL, dst_table, 2, UINT_MAX, FALSE);
+     }
+ 
++ 
++  case SCH_USER_STATS:
++  case SCH_CLIENT_STATS:
++     return check_global_access(thd, SUPER_ACL | PROCESS_ACL);
++  case SCH_TABLE_STATS:
++  case SCH_INDEX_STATS:
+   case SCH_OPEN_TABLES:
+   case SCH_VARIABLES:
+   case SCH_STATUS:
+@@ -5788,8 +6264,8 @@
+ #ifndef NO_EMBEDDED_ACCESS_CHECKS
+   TABLE_LIST *org_tables= tables;
+ #endif
++  Security_context *sctx= thd->security_ctx, *backup_ctx= thd->security_ctx;
+   TABLE_LIST *first_not_own_table= thd->lex->first_not_own_table();
+-  Security_context *sctx= thd->security_ctx, *backup_ctx= thd->security_ctx;
+   /*
+     The check that first_not_own_table is not reached is for the case when
+     the given table list refers to the list for prelocking (contains tables
+@@ -5806,9 +6282,12 @@
+         (want_access & ~(SELECT_ACL | EXTRA_ACL | FILE_ACL)))
+     {
+       if (!no_errors)
++      {
++        thd->diff_access_denied_errors++;
+         my_error(ER_DBACCESS_DENIED_ERROR, MYF(0),
+                  sctx->priv_user, sctx->priv_host,
+                  INFORMATION_SCHEMA_NAME.str);
++      }
+       return TRUE;
+     }
+     /*
+@@ -6317,6 +6796,30 @@
+   */
+   lex_start(thd);
+   mysql_reset_thd_for_next_command(thd);
++
++  int start_time_error = 0;
++  int end_time_error = 0;
++  struct timeval start_time, end_time;
++  double start_usecs = 0;
++  double end_usecs = 0;
++  /* cpu time */
++  int cputime_error = 0;
++  struct timespec tp;
++  double start_cpu_nsecs = 0;
++  double end_cpu_nsecs = 0;
++
++  if (opt_userstat_running) {
++#ifdef HAVE_CLOCK_GETTIME
++    /* get start cputime */ 
++    if (!(cputime_error = clock_gettime(CLOCK_THREAD_CPUTIME_ID, &tp)))
++      start_cpu_nsecs = tp.tv_sec*1000000000.0+tp.tv_nsec;
++#endif
++
++    // Gets the start time, in order to measure how long this command takes.
++    if (!(start_time_error = gettimeofday(&start_time, NULL))) {
++      start_usecs = start_time.tv_sec * 1000000.0 + start_time.tv_usec;
++    }
++  }
+ 
+   if (query_cache_send_result_to_client(thd, (char*) inBuf, length) <= 0)
+   {
+@@ -6396,6 +6899,39 @@
+     *found_semicolon= NULL;
+   }
+ 
++  if (opt_userstat_running) {
++    // Gets the end time.
++    if (!(end_time_error = gettimeofday(&end_time, NULL))) {
++      end_usecs = end_time.tv_sec * 1000000.0 + end_time.tv_usec;
++    }
++
++    // Calculates the difference between the end and start times.
++    if (start_usecs && end_usecs >= start_usecs && !start_time_error && !end_time_error) {
++      thd->busy_time = (end_usecs - start_usecs) / 1000000;
++      // In case there are bad values, 2629743 is the #seconds in a month.
++      if (thd->busy_time > 2629743) {
++        thd->busy_time = 0;
++      }
++    } else {
++      // end time went back in time, or gettimeofday() failed.
++      thd->busy_time = 0;
++    }
++
++#ifdef HAVE_CLOCK_GETTIME
++    /* get end cputime */
++    if (!cputime_error &&
++        !(cputime_error = clock_gettime(CLOCK_THREAD_CPUTIME_ID, &tp)))
++      end_cpu_nsecs = tp.tv_sec*1000000000.0+tp.tv_nsec;
++#endif
++    if (start_cpu_nsecs && !cputime_error)
++      thd->cpu_time = (end_cpu_nsecs - start_cpu_nsecs) / 1000000000;
++    else
++      thd->cpu_time = 0;
++  }
++  // Updates THD stats and the global user stats.
++  thd->update_stats(true);
++  update_global_user_stats(thd, true, time(NULL));
++
+   DBUG_VOID_RETURN;
+ }
+ 
+@@ -7407,8 +7943,35 @@
+    pthread_mutex_unlock(&LOCK_active_mi);
+  }
+ #endif
+- if (options & REFRESH_USER_RESOURCES)
+-   reset_mqh((LEX_USER *) NULL);
++  if (options & REFRESH_TABLE_STATS)
++  {
++    pthread_mutex_lock(&LOCK_global_table_stats);
++    free_global_table_stats();
++    init_global_table_stats();
++    pthread_mutex_unlock(&LOCK_global_table_stats);
++  }
++  if (options & REFRESH_INDEX_STATS)
++  {
++    pthread_mutex_lock(&LOCK_global_index_stats);
++    free_global_index_stats();
++    init_global_index_stats();
++    pthread_mutex_unlock(&LOCK_global_index_stats);
++  }
++  if (options & (REFRESH_USER_STATS | REFRESH_CLIENT_STATS))
++  {
++    pthread_mutex_lock(&LOCK_global_user_client_stats);
++    if (options & REFRESH_USER_STATS)
++    {
++      free_global_user_stats();
++      init_global_user_stats();
++    }
++    if (options & REFRESH_CLIENT_STATS)
++    {
++      free_global_client_stats();
++      init_global_client_stats();
++    }
++    pthread_mutex_unlock(&LOCK_global_user_client_stats);
++  }
+  *write_to_binlog= tmp_write_to_binlog;
+  return result;
+ }
+diff -r 1270c564d514 sql/sql_prepare.cc
+--- a/sql/sql_prepare.cc	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/sql_prepare.cc	Mon Dec 22 00:31:13 2008 -0800
+@@ -80,6 +80,9 @@
+ #else
+ #include <mysql_com.h>
+ #endif
++
++// Uses the THD to update the global stats by user name and client IP
++void update_global_user_stats(THD* thd, bool create_user, time_t now);
+ 
+ /* A result class used to send cursor rows using the binary protocol. */
+ 
+@@ -1910,8 +1913,32 @@
+   /* First of all clear possible warnings from the previous command */
+   mysql_reset_thd_for_next_command(thd);
+ 
++  int start_time_error = 0;
++  int end_time_error = 0;
++  struct timeval start_time, end_time;
++  double start_usecs = 0;
++  double end_usecs = 0;
++  /* cpu time */
++  int cputime_error = 0;
++  struct timespec tp;
++  double start_cpu_nsecs = 0;
++  double end_cpu_nsecs = 0;
++
++  if (opt_userstat_running) {
++#ifdef HAVE_CLOCK_GETTIME
++    /* get start cputime */
++    if (!(cputime_error = clock_gettime(CLOCK_THREAD_CPUTIME_ID, &tp)))
++      start_cpu_nsecs = tp.tv_sec*1000000000.0+tp.tv_nsec;
++#endif
++
++    // Gets the start time, in order to measure how long this command takes.
++    if (!(start_time_error = gettimeofday(&start_time, NULL))) {
++      start_usecs = start_time.tv_sec * 1000000.0 + start_time.tv_usec;
++    }
++  }
++
+   if (! (stmt= new Prepared_statement(thd, &thd->protocol_prep)))
+-    DBUG_VOID_RETURN; /* out of memory: error is set in Sql_alloc */
++    goto end; /* out of memory: error is set in Sql_alloc */
+ 
+   if (thd->stmt_map.insert(thd, stmt))
+   {
+@@ -1919,7 +1946,7 @@
+       The error is set in the insert. The statement itself
+       will be also deleted there (this is how the hash works).
+     */
+-    DBUG_VOID_RETURN;
++    goto end;
+   }
+ 
+   /* Reset warnings from previous command */
+@@ -1941,6 +1968,40 @@
+     thd->stmt_map.erase(stmt);
+   }
+   /* check_prepared_statemnt sends the metadata packet in case of success */
++end:
++  if (opt_userstat_running) {
++    // Gets the end time.
++    if (!(end_time_error = gettimeofday(&end_time, NULL))) {
++      end_usecs = end_time.tv_sec * 1000000.0 + end_time.tv_usec;
++    }
++
++    // Calculates the difference between the end and start times.
++    if (start_usecs && end_usecs >= start_usecs && !start_time_error && !end_time_error) {
++      thd->busy_time = (end_usecs - start_usecs) / 1000000;
++      // In case there are bad values, 2629743 is the #seconds in a month.
++      if (thd->busy_time > 2629743) {
++        thd->busy_time = 0;
++      }
++    } else {
++      // end time went back in time, or gettimeofday() failed.
++      thd->busy_time = 0;
++    }
++
++#ifdef HAVE_CLOCK_GETTIME
++    /* get end cputime */
++    if (!cputime_error &&
++        !(cputime_error = clock_gettime(CLOCK_THREAD_CPUTIME_ID, &tp)))
++      end_cpu_nsecs = tp.tv_sec*1000000000.0+tp.tv_nsec;
++#endif
++    if (start_cpu_nsecs && !cputime_error)
++      thd->cpu_time = (end_cpu_nsecs - start_cpu_nsecs) / 1000000000;
++    else
++      thd->cpu_time = 0;
++  }
++  // Updates THD stats and the global user stats.
++  thd->update_stats(true);
++  update_global_user_stats(thd, true, time(NULL));
++
+   DBUG_VOID_RETURN;
+ }
+ 
+@@ -2281,8 +2342,32 @@
+   /* First of all clear possible warnings from the previous command */
+   mysql_reset_thd_for_next_command(thd);
+ 
++  int start_time_error = 0;
++  int end_time_error = 0;
++  struct timeval start_time, end_time;
++  double start_usecs = 0;
++  double end_usecs = 0;
++  /* cpu time */
++  int cputime_error = 0;
++  struct timespec tp;
++  double start_cpu_nsecs = 0;
++  double end_cpu_nsecs = 0;
++
++  if (opt_userstat_running) {
++#ifdef HAVE_CLOCK_GETTIME
++    /* get start cputime */
++    if (!(cputime_error = clock_gettime(CLOCK_THREAD_CPUTIME_ID, &tp)))
++      start_cpu_nsecs = tp.tv_sec*1000000000.0+tp.tv_nsec;
++#endif
++
++    // Gets the start time, in order to measure how long this command takes.
++    if (!(start_time_error = gettimeofday(&start_time, NULL))) {
++      start_usecs = start_time.tv_sec * 1000000.0 + start_time.tv_usec;
++    }
++  }
++
+   if (!(stmt= find_prepared_statement(thd, stmt_id, "mysql_stmt_execute")))
+-    DBUG_VOID_RETURN;
++    goto end;
+ 
+ #ifdef ENABLED_PROFILING
+   thd->profiling.set_query_source(stmt->query, stmt->query_length);
+@@ -2325,11 +2410,46 @@
+                        test(flags & (ulong) CURSOR_TYPE_READ_ONLY));
+   if (!(specialflag & SPECIAL_NO_PRIOR))
+     my_pthread_setprio(pthread_self(), WAIT_PRIOR);
+-  DBUG_VOID_RETURN;
++  goto end;
+ 
+ set_params_data_err:
+   my_error(ER_WRONG_ARGUMENTS, MYF(0), "mysql_stmt_execute");
+   reset_stmt_params(stmt);
++
++end:
++  if (opt_userstat_running) {
++    // Gets the end time.
++    if (!(end_time_error = gettimeofday(&end_time, NULL))) {
++      end_usecs = end_time.tv_sec * 1000000.0 + end_time.tv_usec;
++    }
++
++    // Calculates the difference between the end and start times.
++    if (start_usecs && end_usecs >= start_usecs && !start_time_error && !end_time_error) {
++      thd->busy_time = (end_usecs - start_usecs) / 1000000;
++      // In case there are bad values, 2629743 is the #seconds in a month.
++      if (thd->busy_time > 2629743) {
++        thd->busy_time = 0;
++      }
++    } else {
++      // end time went back in time, or gettimeofday() failed.
++      thd->busy_time = 0;
++    }
++
++#ifdef HAVE_CLOCK_GETTIME
++    /* get end cputime */
++    if (!cputime_error &&
++        !(cputime_error = clock_gettime(CLOCK_THREAD_CPUTIME_ID, &tp)))
++      end_cpu_nsecs = tp.tv_sec*1000000000.0+tp.tv_nsec;
++#endif
++    if (start_cpu_nsecs && !cputime_error)
++      thd->cpu_time = (end_cpu_nsecs - start_cpu_nsecs) / 1000000000;
++    else
++      thd->cpu_time = 0;
++  }
++  // Updates THD stats and the global user stats.
++  thd->update_stats(true);
++  update_global_user_stats(thd, true, time(NULL));
++
+   DBUG_VOID_RETURN;
+ }
+ 
+@@ -2423,6 +2543,31 @@
+ 
+   /* First of all clear possible warnings from the previous command */
+   mysql_reset_thd_for_next_command(thd);
++
++  int start_time_error = 0;
++  int end_time_error = 0;
++  struct timeval start_time, end_time;
++  double start_usecs = 0;
++  double end_usecs = 0;
++  /* cpu time */
++  int cputime_error = 0;
++  struct timespec tp;
++  double start_cpu_nsecs = 0;
++  double end_cpu_nsecs = 0;
++
++  if (opt_userstat_running) {
++#ifdef HAVE_CLOCK_GETTIME
++    /* get start cputime */
++    if (!(cputime_error = clock_gettime(CLOCK_THREAD_CPUTIME_ID, &tp)))
++      start_cpu_nsecs = tp.tv_sec*1000000000.0+tp.tv_nsec;
++#endif
++
++    // Gets the start time, in order to measure how long this command takes.
++    if (!(start_time_error = gettimeofday(&start_time, NULL))) {
++      start_usecs = start_time.tv_sec * 1000000.0 + start_time.tv_usec;
++    }
++  }
++
+   statistic_increment(thd->status_var.com_stmt_fetch, &LOCK_status);
+   if (!(stmt= find_prepared_statement(thd, stmt_id, "mysql_stmt_fetch")))
+     DBUG_VOID_RETURN;
+@@ -2455,6 +2600,39 @@
+   thd->restore_backup_statement(stmt, &stmt_backup);
+   thd->stmt_arena= thd;
+ 
++  if (opt_userstat_running) {
++    // Gets the end time.
++    if (!(end_time_error = gettimeofday(&end_time, NULL))) {
++      end_usecs = end_time.tv_sec * 1000000.0 + end_time.tv_usec;
++    }
++
++    // Calculates the difference between the end and start times.
++    if (start_usecs && end_usecs >= start_usecs && !start_time_error && !end_time_error) {
++      thd->busy_time = (end_usecs - start_usecs) / 1000000;
++      // In case there are bad values, 2629743 is the #seconds in a month.
++      if (thd->busy_time > 2629743) {
++        thd->busy_time = 0;
++      }
++    } else {
++      // end time went back in time, or gettimeofday() failed.
++      thd->busy_time = 0;
++    }
++
++#ifdef HAVE_CLOCK_GETTIME
++    /* get end cputime */
++    if (!cputime_error &&
++        !(cputime_error = clock_gettime(CLOCK_THREAD_CPUTIME_ID, &tp)))
++      end_cpu_nsecs = tp.tv_sec*1000000000.0+tp.tv_nsec;
++#endif
++    if (start_cpu_nsecs && !cputime_error)
++      thd->cpu_time = (end_cpu_nsecs - start_cpu_nsecs) / 1000000000;
++    else
++      thd->cpu_time = 0;
++  }
++  // Updates THD stats and the global user stats.
++  thd->update_stats(true);
++  update_global_user_stats(thd, true, time(NULL));
++
+   DBUG_VOID_RETURN;
+ }
+ 
+@@ -2487,6 +2665,30 @@
+   /* First of all clear possible warnings from the previous command */
+   mysql_reset_thd_for_next_command(thd);
+ 
++  int start_time_error = 0;
++  int end_time_error = 0;
++  struct timeval start_time, end_time;
++  double start_usecs = 0;
++  double end_usecs = 0;
++  /* cpu time */
++  int cputime_error = 0;
++  struct timespec tp;
++  double start_cpu_nsecs = 0;
++  double end_cpu_nsecs = 0;
++
++  if (opt_userstat_running) {
++#ifdef HAVE_CLOCK_GETTIME
++    /* get start cputime */
++    if (!(cputime_error = clock_gettime(CLOCK_THREAD_CPUTIME_ID, &tp)))
++      start_cpu_nsecs = tp.tv_sec*1000000000.0+tp.tv_nsec;
++#endif
++
++    // Gets the start time, in order to measure how long this command takes.
++    if (!(start_time_error = gettimeofday(&start_time, NULL))) {
++      start_usecs = start_time.tv_sec * 1000000.0 + start_time.tv_usec;
++    }
++  }
++
+   statistic_increment(thd->status_var.com_stmt_reset, &LOCK_status);
+   if (!(stmt= find_prepared_statement(thd, stmt_id, "mysql_stmt_reset")))
+     DBUG_VOID_RETURN;
+@@ -2502,6 +2704,39 @@
+   stmt->state= Query_arena::PREPARED;
+ 
+   send_ok(thd);
++
++  if (opt_userstat_running) {
++    // Gets the end time.
++    if (!(end_time_error = gettimeofday(&end_time, NULL))) {
++      end_usecs = end_time.tv_sec * 1000000.0 + end_time.tv_usec;
++    }
++
++    // Calculates the difference between the end and start times.
++    if (start_usecs && end_usecs >= start_usecs && !start_time_error && !end_time_error) {
++      thd->busy_time = (end_usecs - start_usecs) / 1000000;
++      // In case there are bad values, 2629743 is the #seconds in a month.
++      if (thd->busy_time > 2629743) {
++        thd->busy_time = 0;
++      }
++    } else {
++      // end time went back in time, or gettimeofday() failed.
++      thd->busy_time = 0;
++    }
++
++#ifdef HAVE_CLOCK_GETTIME
++    /* get end cputime */
++    if (!cputime_error &&
++        !(cputime_error = clock_gettime(CLOCK_THREAD_CPUTIME_ID, &tp)))
++      end_cpu_nsecs = tp.tv_sec*1000000000.0+tp.tv_nsec;
++#endif
++    if (start_cpu_nsecs && !cputime_error)
++      thd->cpu_time = (end_cpu_nsecs - start_cpu_nsecs) / 1000000000;
++    else
++      thd->cpu_time = 0;
++  }
++  // Updates THD stats and the global user stats.
++  thd->update_stats(true);
++  update_global_user_stats(thd, true, time(NULL));
+ 
+   DBUG_VOID_RETURN;
+ }
+diff -r 1270c564d514 sql/sql_show.cc
+--- a/sql/sql_show.cc	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/sql_show.cc	Mon Dec 22 00:31:13 2008 -0800
+@@ -530,6 +530,7 @@
+ 		sctx->master_access);
+   if (!(db_access & DB_ACLS) && (!grant_option || check_grant_db(thd,dbname)))
+   {
++    thd->diff_access_denied_errors++;
+     my_error(ER_DBACCESS_DENIED_ERROR, MYF(0),
+              sctx->priv_user, sctx->host_or_ip, dbname);
+     mysql_log.write(thd,COM_INIT_DB,ER(ER_DBACCESS_DENIED_ERROR),
+@@ -1858,6 +1859,300 @@
+   DBUG_RETURN(FALSE);
+ }
+ 
++/*
++   Aggregate values for mapped_user entries by their role.
++
++   SYNOPSIS
++     aggregate_user_stats
++       all_user_stats - input to aggregate
++       agg_user_stats - returns aggregated values
++
++   RETURN
++     0 - OK
++     1 - error
++ */
++static int
++aggregate_user_stats(HASH *all_user_stats, HASH *agg_user_stats)
++{
++  DBUG_ENTER("aggregate_user_stats");
++  if (hash_init(agg_user_stats, system_charset_info,
++                max(all_user_stats->records, 1),
++                0, 0, (hash_get_key)get_key_user_stats,
++                (hash_free_key)free_user_stats, 0))
++  {
++    sql_print_error("Malloc in aggregate_user_stats failed");
++    DBUG_RETURN(1);
++  }
++
++  for (int i = 0; i < all_user_stats->records; ++i) {
++    USER_STATS *user = (USER_STATS*)hash_element(all_user_stats, i);
++    USER_STATS *agg_user;
++    if (!(agg_user = (USER_STATS*)hash_search(agg_user_stats,
++                                              (byte*)user->priv_user,
++                                              strlen(user->priv_user))))
++    {
++      // First entry for this role.
++      if (!(agg_user =
++            (USER_STATS*) my_malloc(sizeof(USER_STATS), MYF(MY_WME | MY_ZEROFILL))))
++      {
++        sql_print_error("Malloc in aggregate_user_stats failed");
++        DBUG_RETURN(1);
++      }
++
++      init_user_stats(agg_user, user->priv_user, user->priv_user,
++                      user->total_connections, user->concurrent_connections,
++                      user->connected_time, user->busy_time, user->cpu_time,
++                      user->bytes_received, user->bytes_sent,
++                      user->binlog_bytes_written,
++                      user->rows_fetched, user->rows_updated, user->rows_read,
++                      user->select_commands, user->update_commands,
++                      user->other_commands,
++                      user->commit_trans, user->rollback_trans,
++                      user->denied_connections, user->lost_connections,
++                      user->access_denied_errors, user->empty_queries);
++
++      if (my_hash_insert(agg_user_stats, (byte*)agg_user))
++      {
++        // Out of memory.
++        my_free((char*)agg_user, 0);
++        sql_print_error("Malloc in aggregate_user_stats failed");
++        DBUG_RETURN(1);
++      }
++    }
++    else
++    {
++      // Aggregate with existing values for this role.
++      add_user_stats(agg_user,
++                     user->total_connections, user->concurrent_connections,
++                     user->connected_time, user->busy_time, user->cpu_time,
++                     user->bytes_received, user->bytes_sent,
++                     user->binlog_bytes_written,
++                     user->rows_fetched, user->rows_updated, user->rows_read,
++                     user->select_commands, user->update_commands,
++                     user->other_commands,
++                     user->commit_trans, user->rollback_trans,
++                     user->denied_connections, user->lost_connections,
++                     user->access_denied_errors, user->empty_queries);
++    }
++  }
++  DBUG_PRINT("exit", ("aggregated %d input into %d output entries",
++                      all_user_stats->records, agg_user_stats->records));
++  DBUG_RETURN(0);
++}
++
++/*
++   Write result to network for SHOW USER_STATISTICS
++
++   SYNOPSIS
++     send_user_stats
++       all_user_stats - values to return
++       table - I_S table
++
++   RETURN
++     0 - OK
++     1 - error
++ */
++int send_user_stats(THD* thd, HASH *all_user_stats, TABLE *table)
++{
++  DBUG_ENTER("send_user_stats");
++  for (int i = 0; i < all_user_stats->records; ++i) {
++    restore_record(table, s->default_values);
++    USER_STATS *user_stats = (USER_STATS*)hash_element(all_user_stats, i);
++      table->field[0]->store(user_stats->user, strlen(user_stats->user), system_charset_info);
++      table->field[1]->store((longlong)user_stats->total_connections);
++      table->field[2]->store((longlong)user_stats->concurrent_connections);
++      table->field[3]->store((longlong)user_stats->connected_time);
++      table->field[4]->store((longlong)user_stats->busy_time);
++      table->field[5]->store((longlong)user_stats->cpu_time);
++      table->field[6]->store((longlong)user_stats->bytes_received);
++      table->field[7]->store((longlong)user_stats->bytes_sent);
++      table->field[8]->store((longlong)user_stats->binlog_bytes_written);
++      table->field[9]->store((longlong)user_stats->rows_fetched);
++      table->field[10]->store((longlong)user_stats->rows_updated);
++      table->field[11]->store((longlong)user_stats->rows_read);
++      table->field[12]->store((longlong)user_stats->select_commands);
++      table->field[13]->store((longlong)user_stats->update_commands);
++      table->field[14]->store((longlong)user_stats->other_commands);
++      table->field[15]->store((longlong)user_stats->commit_trans);
++      table->field[16]->store((longlong)user_stats->rollback_trans);
++      table->field[17]->store((longlong)user_stats->denied_connections);
++      table->field[18]->store((longlong)user_stats->lost_connections);
++      table->field[19]->store((longlong)user_stats->access_denied_errors);
++      table->field[20]->store((longlong)user_stats->empty_queries);
++      if (schema_table_store_record(thd, table))
++      {
++	      DBUG_PRINT("error", ("store record error"));
++	      DBUG_RETURN(1);
++      }
++  }
++  DBUG_RETURN(0);
++}
++
++/*
++   Process SHOW USER_STATISTICS
++
++   SYNOPSIS
++     mysqld_show_user_stats
++       thd - current thread
++       wild - limit results to the entry for this user
++       with_roles - when true, display role for mapped users
++
++   RETURN
++     0 - OK
++     1 - error
++ */
++
++
++int fill_schema_user_stats(THD* thd, TABLE_LIST* tables, COND* cond)
++{
++  TABLE *table= tables->table;
++  DBUG_ENTER("fill_schema_user_stats");
++
++  if (check_global_access(thd, SUPER_ACL | PROCESS_ACL))
++          DBUG_RETURN(1);
++
++  // Iterates through all the global stats and sends them to the client.
++  // Pattern matching on the client IP is supported.
++
++  pthread_mutex_lock(&LOCK_global_user_client_stats);
++  int result= send_user_stats(thd, &global_user_stats, table);
++  pthread_mutex_unlock(&LOCK_global_user_client_stats);
++  if (result)
++    goto err;
++
++  DBUG_PRINT("exit", ("fill_schema_user_stats result is 0"));
++  DBUG_RETURN(0);
++
++ err:
++  DBUG_PRINT("exit", ("fill_schema_user_stats result is 1"));
++  DBUG_RETURN(1);
++}
++
++/*
++   Process SHOW CLIENT_STATISTICS
++
++   SYNOPSIS
++     mysqld_show_client_stats
++       thd - current thread
++       wild - limit results to the entry for this client
++
++   RETURN
++     0 - OK
++     1 - error
++ */
++
++
++int fill_schema_client_stats(THD* thd, TABLE_LIST* tables, COND* cond)
++{
++  TABLE *table= tables->table;
++  DBUG_ENTER("fill_schema_client_stats");
++
++  if (check_global_access(thd, SUPER_ACL | PROCESS_ACL))
++          DBUG_RETURN(1);
++
++  // Iterates through all the global stats and sends them to the client.
++  // Pattern matching on the client IP is supported.
++
++  pthread_mutex_lock(&LOCK_global_user_client_stats);
++  int result= send_user_stats(thd, &global_client_stats, table);
++  pthread_mutex_unlock(&LOCK_global_user_client_stats);
++  if (result)
++    goto err;
++
++  DBUG_PRINT("exit", ("mysqld_show_client_stats result is 0"));
++  DBUG_RETURN(0);
++
++ err:
++  DBUG_PRINT("exit", ("mysqld_show_client_stats result is 1"));
++  DBUG_RETURN(1);
++}
++
++
++// Sends the global table stats back to the client.
++int fill_schema_table_stats(THD* thd, TABLE_LIST* tables, COND* cond)
++{
++  TABLE *table= tables->table;
++  DBUG_ENTER("fill_schema_table_stats");
++  char *table_full_name, *table_schema;
++
++  pthread_mutex_lock(&LOCK_global_table_stats);
++  for (int i = 0; i < global_table_stats.records; ++i) {
++    restore_record(table, s->default_values);
++    TABLE_STATS *table_stats = 
++      (TABLE_STATS*)hash_element(&global_table_stats, i);
++
++    table_full_name= thd->strdup(table_stats->table);
++    table_schema= strsep(&table_full_name, ".");
++
++    TABLE_LIST tmp_table;
++    bzero((char*) &tmp_table,sizeof(tmp_table));
++    tmp_table.table_name= table_full_name;
++    tmp_table.db= table_schema;
++    tmp_table.grant.privilege= 0;
++    if (check_access(thd, SELECT_ACL | EXTRA_ACL, tmp_table.db,
++                      &tmp_table.grant.privilege, 0, 0,
++                      is_schema_db(table_schema)) ||
++         grant_option && check_grant(thd, SELECT_ACL, &tmp_table, 1, UINT_MAX, 1))
++        continue;
++
++    table->field[0]->store(table_schema, strlen(table_schema), system_charset_info);
++    table->field[1]->store(table_full_name, strlen(table_full_name), system_charset_info);
++    table->field[2]->store((longlong)table_stats->rows_read, TRUE);
++    table->field[3]->store((longlong)table_stats->rows_changed, TRUE);
++    table->field[4]->store((longlong)table_stats->rows_changed_x_indexes, TRUE);
++
++    if (schema_table_store_record(thd, table))
++    {
++      VOID(pthread_mutex_unlock(&LOCK_global_table_stats));
++      DBUG_RETURN(1);
++    }
++  }
++  pthread_mutex_unlock(&LOCK_global_table_stats);
++  DBUG_RETURN(0);
++}
++
++// Sends the global index stats back to the client.
++int fill_schema_index_stats(THD* thd, TABLE_LIST* tables, COND* cond)
++{
++  TABLE *table= tables->table;
++  DBUG_ENTER("fill_schema_index_stats");
++  char *index_full_name, *table_schema, *table_name;
++
++  pthread_mutex_lock(&LOCK_global_index_stats);
++  for (int i = 0; i < global_index_stats.records; ++i) {
++    restore_record(table, s->default_values);
++    INDEX_STATS *index_stats =
++      (INDEX_STATS*)hash_element(&global_index_stats, i);
++
++    index_full_name= thd->strdup(index_stats->index);
++    table_schema= strsep(&index_full_name, ".");
++    table_name= strsep(&index_full_name, ".");
++
++    TABLE_LIST tmp_table;
++    bzero((char*) &tmp_table,sizeof(tmp_table));
++    tmp_table.table_name= table_name;
++    tmp_table.db= table_schema;
++    tmp_table.grant.privilege= 0;
++    if (check_access(thd, SELECT_ACL | EXTRA_ACL, tmp_table.db,
++                      &tmp_table.grant.privilege, 0, 0,
++                      is_schema_db(table_schema)) ||
++         grant_option && check_grant(thd, SELECT_ACL, &tmp_table, 1, UINT_MAX, 1))
++        continue;
++
++    table->field[0]->store(table_schema, strlen(table_schema), system_charset_info);
++    table->field[1]->store(table_name, strlen(table_name), system_charset_info);
++    table->field[2]->store(index_full_name, strlen(index_full_name), system_charset_info);
++    table->field[3]->store((longlong)index_stats->rows_read, TRUE);
++
++    if (schema_table_store_record(thd, table))
++    { 
++      VOID(pthread_mutex_unlock(&LOCK_global_index_stats));
++      DBUG_RETURN(1);
++    }
++  }
++  pthread_mutex_unlock(&LOCK_global_index_stats);
++  DBUG_RETURN(0);
++}
+ 
+ /* collect status for all running threads */
+ 
+@@ -4468,6 +4763,77 @@
+   {0, 0, MYSQL_TYPE_STRING, 0, 0, 0}
+ };
+ 
++ST_FIELD_INFO user_stats_fields_info[]=
++{
++  {"USER", 16, MYSQL_TYPE_STRING, 0, 0, "User"},
++  {"TOTAL_CONNECTIONS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Total_connections"},
++  {"CONCURRENT_CONNECTIONS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Concurrent_connections"},
++  {"CONNECTED_TIME", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Connected_time"},
++  {"BUSY_TIME", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Busy_time"},
++  {"CPU_TIME", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Cpu_time"},
++  {"BYTES_RECEIVED", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Bytes_received"},
++  {"BYTES_SENT", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Bytes_sent"},
++  {"BINLOG_BYTES_WRITTEN", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Binlog_bytes_written"},
++  {"ROWS_FETCHED", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Rows_fetched"},
++  {"ROWS_UPDATED", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Rows_updated"},
++  {"TABLE_ROWS_READ", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Table_rows_read"},
++  {"SELECT_COMMANDS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Select_commands"},
++  {"UPDATE_COMMANDS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Update_commands"},
++  {"OTHER_COMMANDS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Other_commands"},
++  {"COMMIT_TRANSACTIONS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Commit_transactions"},
++  {"ROLLBACK_TRANSACTIONS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Rollback_transactions"},
++  {"DENIED_CONNECTIONS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Denied_connections"},
++  {"LOST_CONNECTIONS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Lost_connections"},
++  {"ACCESS_DENIED", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Access_denied"},
++  {"EMPTY_QUERIES", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Empty_queries"},
++  {0, 0, MYSQL_TYPE_STRING, 0, 0, 0}
++};
++
++ST_FIELD_INFO client_stats_fields_info[]=
++{
++  {"CLIENT", 16, MYSQL_TYPE_STRING, 0, 0, "Client"},
++  {"TOTAL_CONNECTIONS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Total_connections"},
++  {"CONCURRENT_CONNECTIONS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Concurrent_connections"},
++  {"CONNECTED_TIME", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Connected_time"},
++  {"BUSY_TIME", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Busy_time"},
++  {"CPU_TIME", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Cpu_time"},
++  {"BYTES_RECEIVED", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Bytes_received"},
++  {"BYTES_SENT", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Bytes_sent"},
++  {"BINLOG_BYTES_WRITTEN", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Binlog_bytes_written"},
++  {"ROWS_FETCHED", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Rows_fetched"},
++  {"ROWS_UPDATED", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Rows_updated"},
++  {"TABLE_ROWS_READ", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Table_rows_read"},
++  {"SELECT_COMMANDS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Select_commands"},
++  {"UPDATE_COMMANDS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Update_commands"},
++  {"OTHER_COMMANDS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Other_commands"},
++  {"COMMIT_TRANSACTIONS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Commit_transactions"},
++  {"ROLLBACK_TRANSACTIONS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Rollback_transactions"},
++  {"DENIED_CONNECTIONS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Denied_connections"},
++  {"LOST_CONNECTIONS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Lost_connections"},
++  {"ACCESS_DENIED", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Access_denied"},
++  {"EMPTY_QUERIES", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Empty_queries"},
++  {0, 0, MYSQL_TYPE_STRING, 0, 0, 0}
++};
++
++
++ST_FIELD_INFO table_stats_fields_info[]=
++{
++  {"TABLE_SCHEMA", NAME_LEN, MYSQL_TYPE_STRING, 0, 0, "Table_schema"},
++  {"TABLE_NAME", NAME_LEN, MYSQL_TYPE_STRING, 0, 0, "Table_name"},
++  {"ROWS_READ", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Rows_read"},
++  {"ROWS_CHANGED", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Rows_changed"},
++  {"ROWS_CHANGED_X_INDEXES", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Rows_changed_x_#indexes"},
++  {0, 0, MYSQL_TYPE_STRING, 0, 0, 0}
++};
++
++ST_FIELD_INFO index_stats_fields_info[]=
++{
++  {"TABLE_SCHEMA", NAME_LEN, MYSQL_TYPE_STRING, 0, 0, "Table_schema"},
++  {"TABLE_NAME", NAME_LEN, MYSQL_TYPE_STRING, 0, 0, "Table_name"},
++  {"INDEX_NAME", NAME_LEN, MYSQL_TYPE_STRING, 0, 0, "Index_name"},
++  {"ROWS_READ", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Rows_read"},
++  {0, 0, MYSQL_TYPE_STRING, 0, 0, 0}
++};
+ 
+ /*
+   Description of ST_FIELD_INFO in table.h
+@@ -4477,6 +4843,8 @@
+ {
+   {"CHARACTER_SETS", charsets_fields_info, create_schema_table, 
+    fill_schema_charsets, make_character_sets_old_format, 0, -1, -1, 0},
++  {"CLIENT_STATISTICS", client_stats_fields_info, create_schema_table, 
++    fill_schema_client_stats, make_old_format, 0, -1, -1, 0},
+   {"COLLATIONS", collation_fields_info, create_schema_table, 
+    fill_schema_collation, make_old_format, 0, -1, -1, 0},
+   {"COLLATION_CHARACTER_SET_APPLICABILITY", coll_charset_app_fields_info,
+@@ -4485,6 +4853,8 @@
+    get_all_tables, make_columns_old_format, get_schema_column_record, 1, 2, 0},
+   {"COLUMN_PRIVILEGES", column_privileges_fields_info, create_schema_table,
+     fill_schema_column_privileges, 0, 0, -1, -1, 0},
++  {"INDEX_STATISTICS", index_stats_fields_info, create_schema_table,
++   fill_schema_index_stats, make_old_format, 0, -1, -1, 0},
+   {"KEY_COLUMN_USAGE", key_column_usage_fields_info, create_schema_table,
+     get_all_tables, 0, get_schema_key_column_usage_record, 4, 5, 0},
+   {"OPEN_TABLES", open_tables_fields_info, create_schema_table,
+@@ -4510,10 +4880,14 @@
+    get_all_tables, make_table_names_old_format, 0, 1, 2, 1},
+   {"TABLE_PRIVILEGES", table_privileges_fields_info, create_schema_table,
+     fill_schema_table_privileges, 0, 0, -1, -1, 0},
++  {"TABLE_STATISTICS", table_stats_fields_info, create_schema_table,
++    fill_schema_table_stats, make_old_format, 0, -1, -1, 0},
+   {"TRIGGERS", triggers_fields_info, create_schema_table,
+    get_all_tables, make_old_format, get_schema_triggers_record, 5, 6, 0},
+   {"USER_PRIVILEGES", user_privileges_fields_info, create_schema_table, 
+     fill_schema_user_privileges, 0, 0, -1, -1, 0},
++  {"USER_STATISTICS", user_stats_fields_info, create_schema_table, 
++    fill_schema_user_stats, make_old_format, 0, -1, -1, 0},
+   {"VARIABLES", variables_fields_info, create_schema_table, fill_variables,
+    make_old_format, 0, -1, -1, 1},
+   {"VIEWS", view_fields_info, create_schema_table, 
+diff -r 1270c564d514 sql/sql_update.cc
+--- a/sql/sql_update.cc	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/sql_update.cc	Mon Dec 22 00:31:13 2008 -0800
+@@ -601,7 +601,8 @@
+       (thd->client_capabilities & CLIENT_FOUND_ROWS) ? found : updated;
+     send_ok(thd, (ulong) thd->row_count_func,
+ 	    thd->insert_id_used ? thd->last_insert_id : 0L,buff);
+-    DBUG_PRINT("info",("%ld records updated", (long) updated));
++    thd->updated_row_count += thd->row_count_func;
++    DBUG_PRINT("info",("%d records updated",updated));
+   }
+   thd->count_cuted_fields= CHECK_FIELD_IGNORE;		/* calc cuted fields */
+   thd->abort_on_warning= 0;
+@@ -1832,5 +1833,6 @@
+     (thd->client_capabilities & CLIENT_FOUND_ROWS) ? found : updated;
+   ::send_ok(thd, (ulong) thd->row_count_func,
+ 	    thd->insert_id_used ? thd->last_insert_id : 0L,buff);
++  thd->updated_row_count += thd->row_count_func;
+   return FALSE;
+ }
+diff -r 1270c564d514 sql/sql_yacc.yy
+--- a/sql/sql_yacc.yy	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/sql_yacc.yy	Mon Dec 22 00:31:13 2008 -0800
+@@ -523,6 +523,7 @@
+ %token  CHECK_SYM
+ %token  CIPHER_SYM
+ %token  CLIENT_SYM
++%token	CLIENT_STATS_SYM
+ %token  CLOSE_SYM
+ %token  COALESCE
+ %token  CODE_SYM
+@@ -680,6 +681,7 @@
+ %token  IMPORT
+ %token  INDEXES
+ %token  INDEX_SYM
++%token	INDEX_STATS_SYM
+ %token  INFILE
+ %token  INNER_SYM
+ %token  INNOBASE_SYM
+@@ -909,6 +911,7 @@
+ %token  SIGNED_SYM
+ %token  SIMPLE_SYM
+ %token  SLAVE
++%token  SLOW_SYM
+ %token  SMALLINT
+ %token  SNAPSHOT_SYM
+ %token  SOUNDS_SYM
+@@ -949,6 +952,7 @@
+ %token  TABLES
+ %token  TABLESPACE
+ %token  TABLE_SYM
++%token	TABLE_STATS_SYM
+ %token  TEMPORARY
+ %token  TEMPTABLE_SYM
+ %token  TERMINATED
+@@ -991,6 +995,7 @@
+ %token  UPGRADE_SYM
+ %token  USAGE
+ %token  USER
++%token	USER_STATS_SYM
+ %token  USE_FRM
+ %token  USE_SYM
+ %token  USING
+@@ -8244,6 +8249,38 @@
+           {
+ 	    Lex->sql_command = SQLCOM_SHOW_SLAVE_STAT;
+           }
++        | CLIENT_STATS_SYM wild_and_where 
++          {
++           LEX *lex= Lex;
++	   Lex->sql_command = SQLCOM_SELECT;
++           lex->orig_sql_command= SQLCOM_SHOW_CLIENT_STATS;
++           if (prepare_schema_table(YYTHD, lex, 0, SCH_CLIENT_STATS))
++             MYSQL_YYABORT;
++          }
++        | USER_STATS_SYM wild_and_where 
++          {
++           LEX *lex= Lex;
++	   lex->sql_command = SQLCOM_SELECT;
++           lex->orig_sql_command= SQLCOM_SHOW_USER_STATS;
++           if (prepare_schema_table(YYTHD, lex, 0, SCH_USER_STATS))
++             MYSQL_YYABORT;
++          }
++        | TABLE_STATS_SYM wild_and_where
++          {
++           LEX *lex= Lex;
++           lex->sql_command= SQLCOM_SELECT;
++           lex->orig_sql_command= SQLCOM_SHOW_TABLE_STATS;
++           if (prepare_schema_table(YYTHD, lex, 0, SCH_TABLE_STATS))
++             MYSQL_YYABORT;
++          }
++        | INDEX_STATS_SYM wild_and_where
++          {
++           LEX *lex= Lex;
++           lex->sql_command= SQLCOM_SELECT;
++           lex->orig_sql_command= SQLCOM_SHOW_INDEX_STATS;
++           if (prepare_schema_table(YYTHD, lex, 0, SCH_INDEX_STATS))
++             MYSQL_YYABORT;
++          }
+ 	| CREATE PROCEDURE sp_name
+ 	  {
+ 	    LEX *lex= Lex;
+@@ -8448,9 +8485,14 @@
+ 	| LOGS_SYM	{ Lex->type|= REFRESH_LOG; }
+ 	| STATUS_SYM	{ Lex->type|= REFRESH_STATUS; }
+         | SLAVE         { Lex->type|= REFRESH_SLAVE; }
++	| SLOW_SYM QUERY_SYM LOGS_SYM { Lex->type |= REFRESH_SLOW_QUERY_LOG; }
+         | MASTER_SYM    { Lex->type|= REFRESH_MASTER; }
+ 	| DES_KEY_FILE	{ Lex->type|= REFRESH_DES_KEY_FILE; }
+- 	| RESOURCES     { Lex->type|= REFRESH_USER_RESOURCES; };
++ 	| RESOURCES     { Lex->type|= REFRESH_USER_RESOURCES; }
++ 	| CLIENT_STATS_SYM { Lex->type|= REFRESH_CLIENT_STATS; }
++ 	| USER_STATS_SYM { Lex->type|= REFRESH_USER_STATS; }
++ 	| TABLE_STATS_SYM { Lex->type|= REFRESH_TABLE_STATS; }
++ 	| INDEX_STATS_SYM { Lex->type|= REFRESH_INDEX_STATS; };
+ 
+ opt_table_list:
+ 	/* empty */  {;}
+@@ -9439,6 +9481,7 @@
+ 	| CHAIN_SYM		{}
+ 	| CHANGED		{}
+ 	| CIPHER_SYM		{}
++	| CLIENT_STATS_SYM      {}
+ 	| CLIENT_SYM		{}
+         | CODE_SYM              {}
+ 	| COLLATION_SYM		{}
+@@ -9491,6 +9534,7 @@
+ 	| HOSTS_SYM		{}
+ 	| HOUR_SYM		{}
+ 	| IDENTIFIED_SYM	{}
++	| INDEX_STATS_SYM       {}
+ 	| INVOKER_SYM		{}
+ 	| IMPORT		{}
+ 	| INDEXES		{}
+@@ -9600,6 +9644,7 @@
+ 	| SIMPLE_SYM		{}
+ 	| SHARE_SYM		{}
+ 	| SHUTDOWN		{}
++	| SLOW_SYM		{}
+ 	| SNAPSHOT_SYM		{}
+ 	| SOUNDS_SYM		{}
+ 	| SOURCE_SYM            {}
+@@ -9616,6 +9661,7 @@
+         | SUSPEND_SYM           {}
+         | SWAPS_SYM             {}
+ 	| SWITCHES_SYM          {}
++	| TABLE_STATS_SYM       {}
+         | TABLES                {}
+ 	| TABLESPACE		{}
+ 	| TEMPORARY		{}
+@@ -9636,6 +9682,7 @@
+ 	| UNKNOWN_SYM		{}
+ 	| UNTIL_SYM		{}
+ 	| USER			{}
++	| USER_STATS_SYM        {}
+ 	| USE_FRM		{}
+ 	| VARIABLES		{}
+ 	| VIEW_SYM		{}
+diff -r 1270c564d514 sql/structs.h
+--- a/sql/structs.h	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/structs.h	Mon Dec 22 00:31:13 2008 -0800
+@@ -273,6 +273,98 @@
+   time_t intime;
+ } USER_CONN;
+ 
++typedef struct st_user_stats {
++  char user[USERNAME_LENGTH + 1];
++  // Account name the user is mapped to when this is a user from mapped_user.
++  // Otherwise, the same value as user.
++  char priv_user[USERNAME_LENGTH + 1];
++  uint total_connections;
++  uint concurrent_connections;
++  time_t connected_time;  // in seconds
++  double busy_time;       // in seconds
++  double cpu_time;        // in seconds
++  ulonglong bytes_received;
++  ulonglong bytes_sent;
++  ulonglong binlog_bytes_written;
++  ha_rows rows_fetched, rows_updated, rows_read;
++  ulonglong select_commands, update_commands, other_commands;
++  ulonglong commit_trans, rollback_trans;
++  ulonglong denied_connections, lost_connections;
++  ulonglong access_denied_errors;
++  ulonglong empty_queries;
++} USER_STATS;
++
++/* Lookup function for hash tables with USER_STATS entries */
++extern byte *get_key_user_stats(USER_STATS *user_stats, uint *length,
++                                my_bool not_used __attribute__((unused)));
++
++/* Free all memory for a hash table with USER_STATS entries */
++extern void free_user_stats(USER_STATS* user_stats);
++
++/* Intialize an instance of USER_STATS */
++extern void
++init_user_stats(USER_STATS *user_stats,
++                const char *user,
++                const char *priv_user,
++                uint total_connections,
++                uint concurrent_connections,
++                time_t connected_time,
++                double busy_time,
++                double cpu_time,
++                ulonglong bytes_received,
++                ulonglong bytes_sent,
++                ulonglong binlog_bytes_written,
++                ha_rows rows_fetched,
++                ha_rows rows_updated,
++                ha_rows rows_read,
++                ulonglong select_commands,
++                ulonglong update_commands,
++                ulonglong other_commands,
++                ulonglong commit_trans,
++                ulonglong rollback_trans,
++                ulonglong denied_connections,
++                ulonglong lost_connections,
++                ulonglong access_denied_errors,
++                ulonglong empty_queries);
++
++/* Increment values of an instance of USER_STATS */
++extern void
++add_user_stats(USER_STATS *user_stats,
++               uint total_connections,
++               uint concurrent_connections,
++               time_t connected_time,
++               double busy_time,
++               double cpu_time,
++               ulonglong bytes_received,
++               ulonglong bytes_sent,
++               ulonglong binlog_bytes_written,
++               ha_rows rows_fetched,
++               ha_rows rows_updated,
++               ha_rows rows_read,
++               ulonglong select_commands,
++               ulonglong update_commands,
++               ulonglong other_commands,
++               ulonglong commit_trans,
++               ulonglong rollback_trans,
++               ulonglong denied_connections,
++               ulonglong lost_connections,
++               ulonglong access_denied_errors,
++               ulonglong empty_queries);
++
++typedef struct st_table_stats {
++  char table[NAME_LEN * 2 + 2];  // [db] + '.' + [table] + '\0'
++  ulonglong rows_read, rows_changed;
++  ulonglong rows_changed_x_indexes;
++  /* Stores enum db_type, but forward declarations cannot be done */
++  int engine_type;
++} TABLE_STATS;
++
++typedef struct st_index_stats {
++  char index[NAME_LEN * 3 + 3];  // [db] + '.' + [table] + '.' + [index] + '\0'
++  ulonglong rows_read;
++} INDEX_STATS;
++
++
+ 	/* Bits in form->update */
+ #define REG_MAKE_DUPP		1	/* Make a copy of record when read */
+ #define REG_NEW_RECORD		2	/* Write a new record if not found */
+diff -r 1270c564d514 sql/table.h
+--- a/sql/table.h	Mon Dec 22 00:26:39 2008 -0800
++++ b/sql/table.h	Mon Dec 22 00:31:13 2008 -0800
+@@ -371,10 +371,12 @@
+ enum enum_schema_tables
+ {
+   SCH_CHARSETS= 0,
++  SCH_CLIENT_STATS,
+   SCH_COLLATIONS,
+   SCH_COLLATION_CHARACTER_SET_APPLICABILITY,
+   SCH_COLUMNS,
+   SCH_COLUMN_PRIVILEGES,
++  SCH_INDEX_STATS,
+   SCH_KEY_COLUMN_USAGE,
+   SCH_OPEN_TABLES,
+   SCH_PROFILES,
+@@ -387,8 +389,10 @@
+   SCH_TABLE_CONSTRAINTS,
+   SCH_TABLE_NAMES,
+   SCH_TABLE_PRIVILEGES,
++  SCH_TABLE_STATS,
+   SCH_TRIGGERS,
+   SCH_USER_PRIVILEGES,
++  SCH_USER_STATS,
+   SCH_VARIABLES,
+   SCH_VIEWS
+ };
+diff -r 1270c564d514 strings/Makefile.in
+--- a/strings/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/strings/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -361,6 +361,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 support-files/MacOSX/Makefile.in
+--- a/support-files/MacOSX/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/support-files/MacOSX/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -171,6 +171,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 support-files/Makefile.in
+--- a/support-files/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/support-files/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -191,6 +191,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 support-files/RHEL4-SElinux/Makefile.in
+--- a/support-files/RHEL4-SElinux/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/support-files/RHEL4-SElinux/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -169,6 +169,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 tests/Makefile.in
+--- a/tests/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/tests/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -215,6 +215,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @CLIENT_LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 tools/Makefile.in
+--- a/tools/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/tools/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -189,6 +189,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 vio/Makefile.in
+--- a/vio/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/vio/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -198,6 +198,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 win/Makefile.in
+--- a/win/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/win/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -167,6 +167,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = @LIBS@
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
+diff -r 1270c564d514 zlib/Makefile.in
+--- a/zlib/Makefile.in	Mon Dec 22 00:26:39 2008 -0800
++++ b/zlib/Makefile.in	Mon Dec 22 00:31:13 2008 -0800
+@@ -206,6 +206,7 @@
+ LIBDL = @LIBDL@
+ LIBEDIT_LOBJECTS = @LIBEDIT_LOBJECTS@
+ LIBOBJS = @LIBOBJS@
++LIBRT = @LIBRT@
+ LIBS = $(NON_THREADED_LIBS)
+ LIBTOOL = @LIBTOOL@
+ LIB_EXTRA_CCFLAGS = @LIB_EXTRA_CCFLAGS@
diff --git a/1004_microsec_process-percona-5.0.75-b12.patch b/1004_microsec_process-percona-5.0.75-b12.patch
new file mode 100644
index 0000000..0e094e5
--- /dev/null
+++ b/1004_microsec_process-percona-5.0.75-b12.patch
@@ -0,0 +1,281 @@
+diff -r 327ce7a34c91 mysql-test/r/information_schema.result
+--- a/mysql-test/r/information_schema.result	Fri Nov 07 15:44:23 2008 -0800
++++ b/mysql-test/r/information_schema.result	Fri Nov 07 15:52:53 2008 -0800
+@@ -44,6 +44,7 @@
+ COLUMN_PRIVILEGES
+ INDEX_STATISTICS
+ KEY_COLUMN_USAGE
++PROCESSLIST
+ PROFILING
+ ROUTINES
+ SCHEMATA
+@@ -740,7 +741,7 @@
+ CREATE VIEW a1 (t_CRASHME) AS SELECT f1 FROM t_crashme GROUP BY f1;
+ CREATE VIEW a2 AS SELECT t_CRASHME FROM a1;
+ count(*)
+-106
++107
+ drop view a2, a1;
+ drop table t_crashme;
+ select table_schema,table_name, column_name from
+@@ -749,6 +750,7 @@
+ table_schema	table_name	column_name
+ information_schema	COLUMNS	COLUMN_DEFAULT
+ information_schema	COLUMNS	COLUMN_TYPE
++information_schema	PROCESSLIST	INFO
+ information_schema	ROUTINES	ROUTINE_DEFINITION
+ information_schema	ROUTINES	SQL_MODE
+ information_schema	TRIGGERS	ACTION_CONDITION
+@@ -813,7 +815,7 @@
+ flush privileges;
+ SELECT table_schema, count(*) FROM information_schema.TABLES GROUP BY TABLE_SCHEMA;
+ table_schema	count(*)
+-information_schema	21
++information_schema	22
+ mysql	17
+ create table t1 (i int, j int);
+ create trigger trg1 before insert on t1 for each row
+@@ -1206,6 +1208,7 @@
+ COLUMN_PRIVILEGES	TABLE_SCHEMA
+ INDEX_STATISTICS	TABLE_SCHEMA
+ KEY_COLUMN_USAGE	CONSTRAINT_SCHEMA
++PROCESSLIST	ID
+ PROFILING	QUERY_ID
+ ROUTINES	ROUTINE_SCHEMA
+ SCHEMATA	SCHEMA_NAME
+@@ -1242,6 +1245,7 @@
+ COLUMN_PRIVILEGES	TABLE_SCHEMA
+ INDEX_STATISTICS	TABLE_SCHEMA
+ KEY_COLUMN_USAGE	CONSTRAINT_SCHEMA
++PROCESSLIST	ID
+ PROFILING	QUERY_ID
+ ROUTINES	ROUTINE_SCHEMA
+ SCHEMATA	SCHEMA_NAME
+@@ -1329,6 +1333,7 @@
+ COLUMN_PRIVILEGES	information_schema.COLUMN_PRIVILEGES	1
+ INDEX_STATISTICS	information_schema.INDEX_STATISTICS	1
+ KEY_COLUMN_USAGE	information_schema.KEY_COLUMN_USAGE	1
++PROCESSLIST	information_schema.PROCESSLIST	1
+ PROFILING	information_schema.PROFILING	1
+ ROUTINES	information_schema.ROUTINES	1
+ SCHEMATA	information_schema.SCHEMATA	1
+diff -r 327ce7a34c91 mysql-test/r/information_schema_db.result
+--- a/mysql-test/r/information_schema_db.result	Fri Nov 07 15:44:23 2008 -0800
++++ b/mysql-test/r/information_schema_db.result	Fri Nov 07 15:52:53 2008 -0800
+@@ -13,6 +13,7 @@
+ COLUMN_PRIVILEGES
+ INDEX_STATISTICS
+ KEY_COLUMN_USAGE
++PROCESSLIST
+ PROFILING
+ ROUTINES
+ SCHEMATA
+diff -r 327ce7a34c91 mysql-test/r/mysqlshow.result
+--- a/mysql-test/r/mysqlshow.result	Fri Nov 07 15:44:23 2008 -0800
++++ b/mysql-test/r/mysqlshow.result	Fri Nov 07 15:52:53 2008 -0800
+@@ -87,6 +87,7 @@
+ | COLUMN_PRIVILEGES                     |
+ | INDEX_STATISTICS                      |
+ | KEY_COLUMN_USAGE                      |
++| PROCESSLIST                           |
+ | PROFILING                             |
+ | ROUTINES                              |
+ | SCHEMATA                              |
+@@ -113,6 +114,7 @@
+ | COLUMN_PRIVILEGES                     |
+ | INDEX_STATISTICS                      |
+ | KEY_COLUMN_USAGE                      |
++| PROCESSLIST                           |
+ | PROFILING                             |
+ | ROUTINES                              |
+ | SCHEMATA                              |
+diff -r 327ce7a34c91 sql/mysql_priv.h
+--- a/sql/mysql_priv.h	Fri Nov 07 15:44:23 2008 -0800
++++ b/sql/mysql_priv.h	Fri Nov 07 15:52:53 2008 -0800
+@@ -244,6 +244,8 @@
+ 
+ /* Characters shown for the command in 'show processlist' */
+ #define PROCESS_LIST_WIDTH 100
++/* Characters shown for the command in 'information_schema.processlist' */
++#define PROCESS_LIST_INFO_WIDTH 65535
+ 
+ #define PRECISION_FOR_DOUBLE 53
+ #define PRECISION_FOR_FLOAT  24
+diff -r 327ce7a34c91 sql/sql_show.cc
+--- a/sql/sql_show.cc	Fri Nov 07 15:44:23 2008 -0800
++++ b/sql/sql_show.cc	Fri Nov 07 15:52:53 2008 -0800
+@@ -1466,6 +1466,120 @@
+   }
+   send_eof(thd);
+   DBUG_VOID_RETURN;
++}
++
++int fill_schema_processlist(THD* thd, TABLE_LIST* tables, COND* cond)
++{
++  TABLE *table= tables->table;
++  CHARSET_INFO *cs= system_charset_info;
++  char *user;
++  ulonglong current_timer= my_timer(&current_timer, frequency);
++  DBUG_ENTER("fill_process_list");
++
++  user= thd->security_ctx->master_access & PROCESS_ACL ?
++        NullS : thd->security_ctx->priv_user;
++
++  VOID(pthread_mutex_lock(&LOCK_thread_count));
++
++  if (!thd->killed)
++  {
++    I_List_iterator<THD> it(threads);
++    THD* tmp;
++
++    while ((tmp= it++))
++    {
++      Security_context *tmp_sctx= tmp->security_ctx;
++      struct st_my_thread_var *mysys_var;
++      const char *val;
++
++      if ((!tmp->vio_ok() && !tmp->system_thread) ||
++          (user && (!tmp_sctx->user || strcmp(tmp_sctx->user, user))))
++        continue;
++
++      restore_record(table, s->default_values);
++      /* ID */
++      table->field[0]->store((longlong) tmp->thread_id, TRUE);
++      /* USER */
++      val= tmp_sctx->user ? tmp_sctx->user :
++            (tmp->system_thread ? "system user" : "unauthenticated user");
++      table->field[1]->store(val, strlen(val), cs);
++      /* HOST */
++      if (tmp->peer_port && (tmp_sctx->host || tmp_sctx->ip) &&
++          thd->security_ctx->host_or_ip[0])
++      {
++        char host[LIST_PROCESS_HOST_LEN + 1];
++        my_snprintf(host, LIST_PROCESS_HOST_LEN, "%s:%u",
++                    tmp_sctx->host_or_ip, tmp->peer_port);
++        table->field[2]->store(host, strlen(host), cs);
++      }
++      else
++        table->field[2]->store(tmp_sctx->host_or_ip,
++                               strlen(tmp_sctx->host_or_ip), cs);
++      /* DB */
++      if (tmp->db)
++      {
++        table->field[3]->store(tmp->db, strlen(tmp->db), cs);
++        table->field[3]->set_notnull();
++      }
++
++      if ((mysys_var= tmp->mysys_var))
++        pthread_mutex_lock(&mysys_var->mutex);
++      /* COMMAND */
++      if ((val= (char *) (tmp->killed == THD::KILL_CONNECTION? "Killed" : 0)))
++        table->field[4]->store(val, strlen(val), cs);
++      else
++        table->field[4]->store(command_name[tmp->command],
++                               strlen(command_name[tmp->command]), cs);
++      /* MYSQL_TIME */
++      const ulonglong utime= (tmp->start_timer && current_timer) ? current_timer - tmp->start_timer : 0; 
++      table->field[5]->store(utime / 1000000, TRUE);
++      /* STATE */
++#ifndef EMBEDDED_LIBRARY
++      val= (char*) (tmp->locked ? "Locked" :
++                    tmp->net.reading_or_writing ?
++                    (tmp->net.reading_or_writing == 2 ?
++                     "Writing to net" :
++                     tmp->command == COM_SLEEP ? "" :
++                     "Reading from net") :
++                    tmp->proc_info ? tmp->proc_info :
++                    tmp->mysys_var &&
++                    tmp->mysys_var->current_cond ?
++                    "Waiting on cond" : NullS);
++#else
++      val= (char *) "Writing to net";
++#endif
++      if (val)
++      {
++        table->field[6]->store(val, strlen(val), cs);
++        table->field[6]->set_notnull();
++      }
++
++      if (mysys_var)
++        pthread_mutex_unlock(&mysys_var->mutex);
++
++      /* INFO */
++      if (tmp->query)
++      {
++        table->field[7]->store(tmp->query,
++                               min(PROCESS_LIST_INFO_WIDTH,
++                                   tmp->query_length), cs);
++        table->field[7]->set_notnull();
++      }
++
++      /* TIME_MS */
++      table->field[8]->store((double)(utime / 1000.0));
++
++      if (schema_table_store_record(thd, table))
++      {
++        VOID(pthread_mutex_unlock(&LOCK_thread_count));
++        DBUG_RETURN(1);
++      }
++
++    }
++  }
++
++  VOID(pthread_mutex_unlock(&LOCK_thread_count));
++  DBUG_RETURN(0);
+ }
+ 
+ /*****************************************************************************
+@@ -4821,6 +4941,22 @@
+   {0, 0, MYSQL_TYPE_STRING, 0, 0, 0}
+ };
+ 
++ST_FIELD_INFO processlist_fields_info[]=
++{
++  {"ID", 4, MYSQL_TYPE_LONG, 0, 0, "Id"},
++  {"USER", 16, MYSQL_TYPE_STRING, 0, 0, "User"},
++  {"HOST", LIST_PROCESS_HOST_LEN,  MYSQL_TYPE_STRING, 0, 0, "Host"},
++  {"DB", NAME_LEN, MYSQL_TYPE_STRING, 0, 1, "Db"},
++  {"COMMAND", 16, MYSQL_TYPE_STRING, 0, 0, "Command"},
++  {"TIME", 7, MYSQL_TYPE_LONG, 0, 0, "Time"},
++  {"STATE", 64, MYSQL_TYPE_STRING, 0, 1, "State"},
++  {"INFO", PROCESS_LIST_INFO_WIDTH, MYSQL_TYPE_STRING, 0, 1, "Info"},
++  {"TIME_MS", 100 * (MY_INT64_NUM_DECIMAL_DIGITS + 1) + 3, MYSQL_TYPE_DECIMAL,
++    0, 0, "Time_ms"},
++  {0, 0, MYSQL_TYPE_STRING, 0, 0, 0}
++};
++
++
+ /*
+   Description of ST_FIELD_INFO in table.h
+ */
+@@ -4845,6 +4981,8 @@
+     get_all_tables, 0, get_schema_key_column_usage_record, 4, 5, 0},
+   {"OPEN_TABLES", open_tables_fields_info, create_schema_table,
+    fill_open_tables, make_old_format, 0, -1, -1, 1},
++  {"PROCESSLIST", processlist_fields_info, create_schema_table,
++   fill_schema_processlist, make_old_format, 0, -1, -1, 0},
+   {"PROFILING", query_profile_statistics_info, create_schema_table,
+    fill_query_profile_statistics_info, make_profile_table_for_show, 
+    NULL, -1, -1, false},
+diff -r 327ce7a34c91 sql/table.h
+--- a/sql/table.h	Fri Nov 07 15:44:23 2008 -0800
++++ b/sql/table.h	Fri Nov 07 15:52:53 2008 -0800
+@@ -378,6 +378,7 @@
+   SCH_INDEX_STATS,
+   SCH_KEY_COLUMN_USAGE,
+   SCH_OPEN_TABLES,
++  SCH_PROCESSLIST,
+   SCH_PROFILES,
+   SCH_PROCEDURES,
+   SCH_SCHEMATA,
+diff -ruN mysql-5.0.67_highperf/patch_info/microsec_process.info mysql-5.0.67_highperf_tmp/patch_info/microsec_process.info
+--- /dev/null	1970-01-01 09:00:00.000000000 +0900
++++ mysql-5.0.67_highperf_tmp/patch_info/microsec_process.info	2008-11-12 09:27:52.000000000 +0900
+@@ -0,0 +1,6 @@
++File=microsec_process.patch
++Name=Adds INFOMATION_SCHEMA.PROCESSLIST with TIME_MS column
++Version=1.0
++Author=Percona <info@percona.com>
++License=GPL
++Comment=
++ChangeLog=
diff --git a/1005_innodb_io_patches-percona-5.0.75-b12.patch b/1005_innodb_io_patches-percona-5.0.75-b12.patch
new file mode 100644
index 0000000..0b3ccef
--- /dev/null
+++ b/1005_innodb_io_patches-percona-5.0.75-b12.patch
@@ -0,0 +1,672 @@
+diff -ruN a/innobase/buf/buf0flu.c b/innobase/buf/buf0flu.c
+--- a/innobase/buf/buf0flu.c	2008-12-19 02:19:35.000000000 +0900
++++ b/innobase/buf/buf0flu.c	2009-01-09 15:51:10.000000000 +0900
+@@ -898,10 +898,17 @@
+ 
+ 				old_page_count = page_count;
+ 				
++				if (srv_flush_neighbor_pages) {
+ 				/* Try to flush also all the neighbors */
+ 				page_count +=
+ 					buf_flush_try_neighbors(space, offset,
+ 								flush_type);
++				} else {
++				/* Try to flush the page only */
++				page_count +=
++					buf_flush_try_page(space, offset,
++							   flush_type);
++				}
+ 				/* fprintf(stderr,
+ 				"Flush type %lu, page no %lu, neighb %lu\n",
+ 				flush_type, offset,
+diff -ruN a/innobase/buf/buf0rea.c b/innobase/buf/buf0rea.c
+--- a/innobase/buf/buf0rea.c	2009-01-09 15:40:22.000000000 +0900
++++ b/innobase/buf/buf0rea.c	2009-01-09 15:40:46.000000000 +0900
+@@ -189,6 +189,10 @@
+ 	ulint		err;
+ 	ulint		i;
+ 
++	if (!(srv_read_ahead & 1)) {
++		return(0);
++	}
++
+ 	if (srv_startup_is_before_trx_rollback_phase) {
+ 	        /* No read-ahead to avoid thread deadlocks */
+ 	        return(0);
+@@ -396,6 +400,10 @@
+ 	ulint		err;
+ 	ulint		i;
+ 	
++	if (!(srv_read_ahead & 2)) {
++		return(0);
++	}
++
+ 	if (srv_startup_is_before_trx_rollback_phase) {
+ 	        /* No read-ahead to avoid thread deadlocks */
+ 	        return(0);
+diff -ruN a/innobase/ibuf/ibuf0ibuf.c b/innobase/ibuf/ibuf0ibuf.c
+--- a/innobase/ibuf/ibuf0ibuf.c	2008-12-19 02:19:35.000000000 +0900
++++ b/innobase/ibuf/ibuf0ibuf.c	2009-01-09 15:53:18.000000000 +0900
+@@ -370,8 +370,9 @@
+ 	grow in size, as the references on the upper levels of the tree can
+ 	change */
+ 	
+-	ibuf->max_size = buf_pool_get_curr_size() / UNIV_PAGE_SIZE
+-						/ IBUF_POOL_SIZE_PER_MAX_SIZE;
++	ibuf->max_size = ut_min( buf_pool_get_curr_size() / UNIV_PAGE_SIZE
++		/ IBUF_POOL_SIZE_PER_MAX_SIZE, (ulint) srv_ibuf_max_size / UNIV_PAGE_SIZE);
++	srv_ibuf_max_size = (long long) ibuf->max_size * UNIV_PAGE_SIZE;
+ 	ibuf->meter = IBUF_THRESHOLD + 1;
+ 
+ 	UT_LIST_INIT(ibuf->data_list);
+@@ -2258,11 +2259,13 @@
+ 
+ 	mutex_enter(&ibuf_mutex);
+ 
++	if (!srv_ibuf_active_contract) {
+ 	if (ibuf->size < ibuf->max_size + IBUF_CONTRACT_ON_INSERT_NON_SYNC) {
+ 		mutex_exit(&ibuf_mutex);
+ 
+ 		return;
+ 	}
++	}
+ 
+ 	sync = FALSE;
+ 	
+diff -ruN a/innobase/include/os0file.h b/innobase/include/os0file.h
+--- a/innobase/include/os0file.h	2009-01-09 15:40:22.000000000 +0900
++++ b/innobase/include/os0file.h	2009-01-09 15:40:46.000000000 +0900
+@@ -551,8 +551,10 @@
+ /*========*/
+ 	ulint	n,		/* in: maximum number of pending aio operations
+ 				allowed; n must be divisible by n_segments */
+-	ulint	n_segments,	/* in: combined number of segments in the four
+-				first aio arrays; must be >= 4 */
++//	ulint	n_segments,	/* in: combined number of segments in the four
++//				first aio arrays; must be >= 4 */
++	ulint	n_read_threads,  /* n_segments == 2 + n_read_threads + n_write_threads */
++	ulint	n_write_threads, /**/
+ 	ulint	n_slots_sync);	/* in: number of slots in the sync aio array */
+ /***********************************************************************
+ Requests an asynchronous i/o operation. */
+diff -ruN a/innobase/include/srv0srv.h b/innobase/include/srv0srv.h
+--- a/innobase/include/srv0srv.h	2009-01-09 15:40:22.000000000 +0900
++++ b/innobase/include/srv0srv.h	2009-01-09 15:54:33.000000000 +0900
+@@ -89,6 +89,8 @@
+ extern ulint	srv_lock_table_size;
+ 
+ extern ulint	srv_n_file_io_threads;
++extern ulint	srv_n_read_io_threads;
++extern ulint	srv_n_write_io_threads;
+ 
+ #ifdef UNIV_LOG_ARCHIVE
+ extern ibool	srv_log_archive_on;
+@@ -133,6 +135,14 @@
+ extern ulong	srv_max_purge_lag;
+ extern ibool	srv_use_awe;
+ extern ibool	srv_use_adaptive_hash_indexes;
++
++extern ulint	srv_io_capacity;
++extern long long	srv_ibuf_max_size;
++extern ulint	srv_ibuf_active_contract;
++extern ulint	srv_ibuf_accel_rate;
++extern ulint	srv_flush_neighbor_pages;
++extern uint	srv_read_ahead;
++extern ulint	srv_adaptive_checkpoint;
+ /*-------------------------------------------*/
+ 
+ extern ulint	srv_n_rows_inserted;
+diff -ruN a/innobase/log/log0log.c b/innobase/log/log0log.c
+--- a/innobase/log/log0log.c	2008-12-19 02:19:36.000000000 +0900
++++ b/innobase/log/log0log.c	2009-01-09 15:40:46.000000000 +0900
+@@ -3326,6 +3326,15 @@
+ 			(ulong) ut_dulint_get_high(log_sys->last_checkpoint_lsn),
+ 			(ulong) ut_dulint_get_low(log_sys->last_checkpoint_lsn));
+ 
++	fprintf(file,
++		"Max checkpoint age  %lu\n"
++		"Modified age        %lu\n"
++		"Checkpoint age      %lu\n",
++			(ulong) log_sys->max_checkpoint_age,
++			(ulong) ut_dulint_minus(log_sys->lsn,
++					log_buf_pool_get_oldest_modification()),
++			(ulong) ut_dulint_minus(log_sys->lsn, log_sys->last_checkpoint_lsn));
++
+ 	current_time = time(NULL);
+ 			
+ 	time_elapsed = 0.001 + difftime(current_time,
+diff -ruN a/innobase/os/os0file.c b/innobase/os/os0file.c
+--- a/innobase/os/os0file.c	2009-01-09 15:40:23.000000000 +0900
++++ b/innobase/os/os0file.c	2009-01-09 15:40:46.000000000 +0900
+@@ -2877,8 +2877,10 @@
+ /*========*/
+ 	ulint	n,		/* in: maximum number of pending aio operations
+ 				allowed; n must be divisible by n_segments */
+-	ulint	n_segments,	/* in: combined number of segments in the four
+-				first aio arrays; must be >= 4 */
++//	ulint	n_segments,	/* in: combined number of segments in the four
++//				first aio arrays; must be >= 4 */
++	ulint	n_read_threads,  /* n_segments == 2 + n_read_threads + n_write_threads*/
++	ulint	n_write_threads, /**/
+ 	ulint	n_slots_sync)	/* in: number of slots in the sync aio array */
+ {
+ 	ulint	n_read_segs;
+@@ -2888,6 +2890,8 @@
+ #ifdef POSIX_ASYNC_IO
+ 	sigset_t   sigset;
+ #endif
++	ulint	n_segments = 2 + n_read_threads + n_write_threads;
++
+ 	ut_ad(n % n_segments == 0);
+ 	ut_ad(n_segments >= 4);
+ 
+@@ -2898,8 +2902,8 @@
+ 	}
+ 
+ 	n_per_seg = n / n_segments;
+-	n_write_segs = (n_segments - 2) / 2;
+-	n_read_segs = n_segments - 2 - n_write_segs;
++	n_write_segs = n_write_threads;
++	n_read_segs = n_read_threads;
+ 	
+ 	/* fprintf(stderr, "Array n per seg %lu\n", n_per_seg); */
+ 
+@@ -3180,6 +3184,13 @@
+ 	struct aiocb*	control;
+ #endif
+ 	ulint		i;
++	ulint		prim_segment;
++	ulint		n;
++
++	n = array->n_slots / array->n_segments;
++	/* 64 blocks' striping ( aligning max(BUF_READ_AHEAD_AREA) ) */
++	prim_segment = ( offset >> (UNIV_PAGE_SIZE_SHIFT + 6) ) % (array->n_segments);
++
+ loop:
+ 	os_mutex_enter(array->mutex);
+ 
+@@ -3198,6 +3209,16 @@
+ 		goto loop;
+ 	}
+ 
++	for (i = prim_segment * n; i < array->n_slots; i++) {
++		slot = os_aio_array_get_nth_slot(array, i);
++
++		if (slot->reserved == FALSE) {
++			break;
++		}
++	}
++
++	if (slot->reserved == TRUE){
++		/* Not found after the intended segment. So we should search before. */
+ 	for (i = 0;; i++) {
+ 		slot = os_aio_array_get_nth_slot(array, i);
+ 
+@@ -3205,6 +3226,7 @@
+ 			break;
+ 		}
+ 	}
++	}
+ 
+ 	array->n_reserved++;
+ 
+diff -ruN a/innobase/srv/srv0srv.c b/innobase/srv/srv0srv.c
+--- a/innobase/srv/srv0srv.c	2009-01-09 15:40:23.000000000 +0900
++++ b/innobase/srv/srv0srv.c	2009-01-09 15:58:36.000000000 +0900
+@@ -167,6 +167,8 @@
+ ulint	srv_lock_table_size	= ULINT_MAX;
+ 
+ ulint	srv_n_file_io_threads	= ULINT_MAX;
++ulint	srv_n_read_io_threads	= 1;
++ulint	srv_n_write_io_threads	= 1;
+ 
+ #ifdef UNIV_LOG_ARCHIVE
+ ibool	srv_log_archive_on	= FALSE;
+@@ -324,6 +326,22 @@
+ ibool	srv_use_awe			= FALSE;
+ ibool	srv_use_adaptive_hash_indexes 	= TRUE;
+ 
++ulint	srv_io_capacity = 100;
++
++/* Returns the number of IO operations that is X percent of the capacity.
++PCT_IO(5) -> returns the number of IO operations that is 5% of the max
++where max is srv_io_capacity. */
++#define PCT_IO(pct) ((ulint) (srv_io_capacity * ((double) pct / 100.0)))
++
++long long	srv_ibuf_max_size = 0;
++ulint	srv_ibuf_active_contract = 0; /* 0:disable 1:enable */
++ulint	srv_ibuf_accel_rate = 100;
++#define PCT_IBUF_IO(pct) ((ulint) (srv_io_capacity * srv_ibuf_accel_rate * ((double) pct / 10000.0)))
++
++ulint	srv_flush_neighbor_pages = 1; /* 0:disable 1:enable */
++
++uint	srv_read_ahead = 3; /* 1: random  2: linear  3: Both */
++ulint	srv_adaptive_checkpoint = 0; /* 0:disable 1:enable */
+ /*-------------------------------------------*/
+ ulong	srv_n_spin_wait_rounds	= 20;
+ ulong	srv_n_free_tickets_to_enter = 500;
+@@ -2214,6 +2232,8 @@
+ 	ibool		skip_sleep	= FALSE;
+ 	ulint		i;
+ 	
++	dulint		oldest_lsn;
++	
+ #ifdef UNIV_DEBUG_THREAD_CREATION
+ 	fprintf(stderr, "Master thread starts, id %lu\n",
+ 			      os_thread_pf(os_thread_get_curr_id()));
+@@ -2302,9 +2322,9 @@
+ 						+ log_sys->n_pending_writes;
+ 		n_ios = log_sys->n_log_ios + buf_pool->n_pages_read
+ 						+ buf_pool->n_pages_written;
+-		if (n_pend_ios < 3 && (n_ios - n_ios_old < 5)) {
++		if (n_pend_ios < 3 && (n_ios - n_ios_old < PCT_IO(5))) {
+ 			srv_main_thread_op_info = "doing insert buffer merge";
+-			ibuf_contract_for_n_pages(TRUE, 5);
++			ibuf_contract_for_n_pages(TRUE, PCT_IBUF_IO(5));
+ 
+ 			srv_main_thread_op_info = "flushing log";
+ 
+@@ -2317,7 +2337,7 @@
+ 			/* Try to keep the number of modified pages in the
+ 			buffer pool under the limit wished by the user */
+ 			
+-			n_pages_flushed = buf_flush_batch(BUF_FLUSH_LIST, 100,
++			n_pages_flushed = buf_flush_batch(BUF_FLUSH_LIST, PCT_IO(100),
+ 							  ut_dulint_max);
+ 
+ 		        /* If we had to do the flush, it may have taken
+@@ -2326,6 +2346,49 @@
+ 			iteration of this loop. */
+ 			     
+ 			skip_sleep = TRUE;
++		} else if (srv_adaptive_checkpoint) {
++
++			/* Try to keep modified age not to exceed
++			max_checkpoint_age * 7/8 line */
++
++			mutex_enter(&(log_sys->mutex));
++
++			oldest_lsn = buf_pool_get_oldest_modification();
++			if (ut_dulint_is_zero(oldest_lsn)) {
++
++				mutex_exit(&(log_sys->mutex));
++
++			} else {
++				if (ut_dulint_minus(log_sys->lsn, oldest_lsn)
++				    > (log_sys->max_checkpoint_age) - ((log_sys->max_checkpoint_age) / 8)) {
++					/* LOG_POOL_PREFLUSH_RATIO_ASYNC is exceeded. */
++					/* We should not flush from here. */
++					mutex_exit(&(log_sys->mutex));
++				} else if (ut_dulint_minus(log_sys->lsn, oldest_lsn)
++				    > (log_sys->max_checkpoint_age) - ((log_sys->max_checkpoint_age) / 4)) {
++
++					/* 2nd defence line (max_checkpoint_age * 3/4) */
++
++					mutex_exit(&(log_sys->mutex));
++
++					n_pages_flushed = buf_flush_batch(BUF_FLUSH_LIST, PCT_IO(100),
++									  ut_dulint_max);
++					skip_sleep = TRUE;
++				} else if (ut_dulint_minus(log_sys->lsn, oldest_lsn)
++					   > (log_sys->max_checkpoint_age)/2 ) {
++
++					/* 1st defence line (max_checkpoint_age * 1/2) */
++
++					mutex_exit(&(log_sys->mutex));
++
++					n_pages_flushed = buf_flush_batch(BUF_FLUSH_LIST, PCT_IO(10),
++									  ut_dulint_max);
++					skip_sleep = TRUE;
++				} else {
++					mutex_exit(&(log_sys->mutex));
++				}
++			}
++
+ 		}
+ 
+ 		if (srv_activity_count == old_activity_count) {
+@@ -2352,10 +2415,10 @@
+ 	n_pend_ios = buf_get_n_pending_ios() + log_sys->n_pending_writes;
+ 	n_ios = log_sys->n_log_ios + buf_pool->n_pages_read
+ 						+ buf_pool->n_pages_written;
+-	if (n_pend_ios < 3 && (n_ios - n_ios_very_old < 200)) {
++	if (n_pend_ios < 3 && (n_ios - n_ios_very_old < PCT_IO(200))) {
+ 
+ 		srv_main_thread_op_info = "flushing buffer pool pages";
+-		buf_flush_batch(BUF_FLUSH_LIST, 100, ut_dulint_max);
++		buf_flush_batch(BUF_FLUSH_LIST, PCT_IO(100), ut_dulint_max);
+ 
+ 		srv_main_thread_op_info = "flushing log";
+ 		log_buffer_flush_to_disk();
+@@ -2365,7 +2428,7 @@
+ 	even if the server were active */
+ 
+ 	srv_main_thread_op_info = "doing insert buffer merge";
+-	ibuf_contract_for_n_pages(TRUE, 5);
++	ibuf_contract_for_n_pages(TRUE, PCT_IBUF_IO(5));
+ 
+ 	srv_main_thread_op_info = "flushing log";
+ 	log_buffer_flush_to_disk();
+@@ -2407,14 +2470,14 @@
+ 		(> 70 %), we assume we can afford reserving the disk(s) for
+ 		the time it requires to flush 100 pages */
+ 
+-	        n_pages_flushed = buf_flush_batch(BUF_FLUSH_LIST, 100,
++	        n_pages_flushed = buf_flush_batch(BUF_FLUSH_LIST, PCT_IO(100),
+ 							ut_dulint_max);
+ 	} else {
+ 	        /* Otherwise, we only flush a small number of pages so that
+ 		we do not unnecessarily use much disk i/o capacity from
+ 		other work */
+ 
+-	        n_pages_flushed = buf_flush_batch(BUF_FLUSH_LIST, 10,
++	        n_pages_flushed = buf_flush_batch(BUF_FLUSH_LIST, PCT_IO(10),
+ 							ut_dulint_max);
+ 	}
+ 
+@@ -2503,7 +2566,7 @@
+ 	if (srv_fast_shutdown && srv_shutdown_state > 0) {
+ 	        n_bytes_merged = 0;
+ 	} else {
+-	        n_bytes_merged = ibuf_contract_for_n_pages(TRUE, 20);
++	        n_bytes_merged = ibuf_contract_for_n_pages(TRUE, PCT_IBUF_IO(100));
+ 	}
+ 
+ 	srv_main_thread_op_info = "reserving kernel mutex";
+@@ -2520,7 +2583,7 @@
+ 
+ 	if (srv_fast_shutdown < 2) {
+ 		n_pages_flushed =
+-			buf_flush_batch(BUF_FLUSH_LIST, 100, ut_dulint_max);
++			buf_flush_batch(BUF_FLUSH_LIST, PCT_IO(100), ut_dulint_max);
+ 	} else {
+ 		/* In the fastest shutdown we do not flush the buffer pool
+ 		to data files: we set n_pages_flushed to 0 artificially. */
+diff -ruN a/innobase/srv/srv0start.c b/innobase/srv/srv0start.c
+--- a/innobase/srv/srv0start.c	2008-12-19 02:19:37.000000000 +0900
++++ b/innobase/srv/srv0start.c	2009-01-09 15:40:46.000000000 +0900
+@@ -1205,24 +1205,28 @@
+ 		return(DB_ERROR);
+ 	}
+ 
++	/* over write innodb_file_io_threads */
++	srv_n_file_io_threads = 2 + srv_n_read_io_threads + srv_n_write_io_threads;
++
+ 	/* Restrict the maximum number of file i/o threads */
+ 	if (srv_n_file_io_threads > SRV_MAX_N_IO_THREADS) {
+ 
+ 		srv_n_file_io_threads = SRV_MAX_N_IO_THREADS;
++		srv_n_read_io_threads = srv_n_write_io_threads = (SRV_MAX_N_IO_THREADS - 2) / 2;
+ 	}
+ 
+ 	if (!os_aio_use_native_aio) {
+  		/* In simulated aio we currently have use only for 4 threads */
+-		srv_n_file_io_threads = 4;
++		/*srv_n_file_io_threads = 4;*/
+ 
+ 		os_aio_init(8 * SRV_N_PENDING_IOS_PER_THREAD
+ 						* srv_n_file_io_threads,
+-					srv_n_file_io_threads,
+-					SRV_MAX_N_PENDING_SYNC_IOS);
++					srv_n_read_io_threads, srv_n_write_io_threads,
++					SRV_MAX_N_PENDING_SYNC_IOS * 8);
+ 	} else {
+ 		os_aio_init(SRV_N_PENDING_IOS_PER_THREAD
+ 						* srv_n_file_io_threads,
+-					srv_n_file_io_threads,
++					srv_n_read_io_threads, srv_n_write_io_threads,
+ 					SRV_MAX_N_PENDING_SYNC_IOS);
+ 	}
+ 	
+diff -ruN a/patch_info/innodb_io_patches.info b/patch_info/innodb_io_patches.info
+--- /dev/null	1970-01-01 09:00:00.000000000 +0900
++++ b/patch_info/innodb_io_patches.info	2009-01-09 15:59:05.000000000 +0900
+@@ -0,0 +1,11 @@
++File=innodb_io_patches.patch
++Name=Cluster of past InnoDB IO patches
++Version=1.1
++Author=Percona
++License=GPL
++Comment=This patch contains fixed (control_flush_and_merge_and_read, control_io-threads, adaptive_flush)
++ChangeLog=
++2008-11-06
++YK: Initial release
++2009-01-09
++YK: Some parameters are added
+diff -ruN a/sql/ha_innodb.cc b/sql/ha_innodb.cc
+--- a/sql/ha_innodb.cc	2009-01-09 15:40:23.000000000 +0900
++++ b/sql/ha_innodb.cc	2009-01-09 15:40:46.000000000 +0900
+@@ -149,6 +149,7 @@
+      innobase_lock_wait_timeout, innobase_force_recovery,
+      innobase_open_files;
+ 
++long innobase_read_io_threads, innobase_write_io_threads;
+ longlong innobase_buffer_pool_size, innobase_log_file_size;
+ 
+ /* The default values for the following char* start-up parameters
+@@ -1403,6 +1404,8 @@
+ 	srv_mem_pool_size = (ulint) innobase_additional_mem_pool_size;
+ 
+ 	srv_n_file_io_threads = (ulint) innobase_file_io_threads;
++	srv_n_read_io_threads = (ulint) innobase_read_io_threads;
++	srv_n_write_io_threads = (ulint) innobase_write_io_threads;
+ 
+ 	srv_lock_wait_timeout = (ulint) innobase_lock_wait_timeout;
+ 	srv_force_recovery = (ulint) innobase_force_recovery;
+diff -ruN a/sql/ha_innodb.h b/sql/ha_innodb.h
+--- a/sql/ha_innodb.h	2009-01-09 15:40:23.000000000 +0900
++++ b/sql/ha_innodb.h	2009-01-09 15:59:41.000000000 +0900
+@@ -204,6 +204,7 @@
+ extern long innobase_additional_mem_pool_size;
+ extern long innobase_buffer_pool_awe_mem_mb;
+ extern long innobase_file_io_threads, innobase_lock_wait_timeout;
++extern long innobase_read_io_threads, innobase_write_io_threads;
+ extern long innobase_force_recovery;
+ extern long innobase_open_files;
+ extern char *innobase_data_home_dir, *innobase_data_file_path;
+@@ -234,6 +235,13 @@
+ extern ulong srv_thread_concurrency;
+ extern ulong srv_commit_concurrency;
+ extern ulong srv_flush_log_at_trx_commit;
++extern ulong srv_io_capacity;
++extern long long srv_ibuf_max_size;
++extern ulong srv_ibuf_active_contract;
++extern ulong srv_ibuf_accel_rate;
++extern ulong srv_flush_neighbor_pages;
++extern uint srv_read_ahead;
++extern ulong srv_adaptive_checkpoint;
+ }
+ 
+ bool innobase_init(void);
+diff -ruN a/sql/mysqld.cc b/sql/mysqld.cc
+--- a/sql/mysqld.cc	2009-01-09 15:40:23.000000000 +0900
++++ b/sql/mysqld.cc	2009-01-09 16:01:25.000000000 +0900
+@@ -5036,6 +5036,15 @@
+   OPT_INNODB_ROLLBACK_ON_TIMEOUT,
+   OPT_SECURE_FILE_PRIV,
+   OPT_KEEP_FILES_ON_CREATE,
++  OPT_INNODB_IO_CAPACITY,
++  OPT_INNODB_IBUF_MAX_SIZE,
++  OPT_INNODB_IBUF_ACTIVE_CONTRACT,
++  OPT_INNODB_IBUF_ACCEL_RATE,
++  OPT_INNODB_FLUSH_NEIGHBOR_PAGES,
++  OPT_INNODB_READ_AHEAD,
++  OPT_INNODB_ADAPTIVE_CHECKPOINT,
++  OPT_INNODB_READ_IO_THREADS,
++  OPT_INNODB_WRITE_IO_THREADS,
+   OPT_INNODB_ADAPTIVE_HASH_INDEX,
+   OPT_FEDERATED
+ };
+@@ -5344,6 +5353,41 @@
+    (gptr*) &global_system_variables.innodb_table_locks,
+    (gptr*) &global_system_variables.innodb_table_locks,
+    0, GET_BOOL, OPT_ARG, 1, 0, 0, 0, 0, 0},
++  {"innodb_io_capacity", OPT_INNODB_IO_CAPACITY,
++   "Number of IO operations per second the server can do. Tunes background IO rate.",
++   (gptr*) &srv_io_capacity, (gptr*) &srv_io_capacity,
++   0, GET_ULONG, REQUIRED_ARG, 100, 100, 999999999, 0, 0, 0},
++  {"innodb_ibuf_max_size", OPT_INNODB_IBUF_MAX_SIZE,
++   "The maximum size of the insert buffer. (in bytes)",
++   (gptr*) &srv_ibuf_max_size, (gptr*) &srv_ibuf_max_size, 0,
++   GET_LL, REQUIRED_ARG, LONGLONG_MAX, 0, LONGLONG_MAX, 0, 0, 0},
++  {"innodb_ibuf_active_contract", OPT_INNODB_IBUF_ACTIVE_CONTRACT,
++   "Enable/Disable active_contract of insert buffer. 0:disable 1:enable",
++   (gptr*) &srv_ibuf_active_contract, (gptr*) &srv_ibuf_active_contract,
++   0, GET_ULONG, REQUIRED_ARG, 0, 0, 1, 0, 0, 0},
++  {"innodb_ibuf_accel_rate", OPT_INNODB_IBUF_ACCEL_RATE,
++   "Tunes amount of insert buffer processing of background, in addition to innodb_io_capacity. (in percentage)",
++   (gptr*) &srv_ibuf_accel_rate, (gptr*) &srv_ibuf_accel_rate,
++   0, GET_ULONG, REQUIRED_ARG, 100, 100, 999999999, 0, 0, 0},
++  {"innodb_flush_neighbor_pages", OPT_INNODB_FLUSH_NEIGHBOR_PAGES,
++   "Enable/Disable flushing also neighbor pages. 0:disable 1:enable",
++   (gptr*) &srv_flush_neighbor_pages, (gptr*) &srv_flush_neighbor_pages,
++   0, GET_ULONG, REQUIRED_ARG, 1, 0, 1, 0, 0, 0},
++  {"innodb_read_ahead", OPT_INNODB_READ_AHEAD,
++   "Control read ahead activity. (none, random, linear, [both])",
++   0, 0, 0, GET_ULONG, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
++  {"innodb_adaptive_checkpoint", OPT_INNODB_ADAPTIVE_CHECKPOINT,
++   "Enable/Diasable flushing along modified age. 0:disable 1:enable",
++   (gptr*) &srv_adaptive_checkpoint, (gptr*) &srv_adaptive_checkpoint,
++   0, GET_ULONG, REQUIRED_ARG, 0, 0, 1, 0, 0, 0},
++  {"innodb_read_io_threads", OPT_INNODB_READ_IO_THREADS,
++   "Number of background read I/O threads in InnoDB.",
++   (gptr*) &innobase_read_io_threads, (gptr*) &innobase_read_io_threads,
++   0, GET_LONG, REQUIRED_ARG, 1, 1, 64, 0, 0, 0},
++  {"innodb_write_io_threads", OPT_INNODB_WRITE_IO_THREADS,
++   "Number of background write I/O threads in InnoDB.",
++   (gptr*) &innobase_write_io_threads, (gptr*) &innobase_write_io_threads,
++   0, GET_LONG, REQUIRED_ARG, 1, 1, 64, 0, 0, 0},
+ #endif /* End HAVE_INNOBASE_DB */
+   {"isam", OPT_ISAM, "Obsolete. ISAM storage engine is no longer supported.",
+    (gptr*) &opt_isam, (gptr*) &opt_isam, 0, GET_BOOL, NO_ARG, 0, 0, 0,
+@@ -7637,6 +7636,22 @@
+   case OPT_INNODB_LOG_ARCHIVE:
+     innobase_log_archive= argument ? test(atoi(argument)) : 1;
+     break;
++  case OPT_INNODB_READ_AHEAD:
++    if (argument == disabled_my_option)
++      srv_read_ahead = 0;
++    else if (! argument)
++      srv_read_ahead = 3;
++    else
++    {
++      int type;
++      if ((type=find_type(argument, &innodb_read_ahead_typelib, 2)) <= 0)
++      {
++        fprintf(stderr,"Unknown innodb_read_ahead type: %s\n",argument);
++        exit(1);
++      }
++      srv_read_ahead = (uint) ((type - 1) & 3);
++    }
++    break;
+ #endif /* HAVE_INNOBASE_DB */
+   case OPT_MYISAM_RECOVER:
+   {
+diff -ruN a/sql/set_var.cc b/sql/set_var.cc
+--- a/sql/set_var.cc	2009-01-09 15:40:23.000000000 +0900
++++ b/sql/set_var.cc	2009-01-09 16:05:22.000000000 +0900
+@@ -484,6 +484,37 @@
+ sys_var_long_ptr  sys_innodb_flush_log_at_trx_commit(
+                                         "innodb_flush_log_at_trx_commit",
+                                         &srv_flush_log_at_trx_commit);
++sys_var_long_ptr	sys_innodb_io_capacity("innodb_io_capacity",
++                                               &srv_io_capacity);
++sys_var_long_ptr	sys_innodb_ibuf_active_contract("innodb_ibuf_active_contract",
++                                                        &srv_ibuf_active_contract);
++sys_var_long_ptr	sys_innodb_ibuf_accel_rate("innodb_ibuf_accel_rate",
++                                                   &srv_ibuf_accel_rate);
++sys_var_long_ptr	sys_innodb_flush_neighbor_pages("innodb_flush_neighbor_pages",
++                                                        &srv_flush_neighbor_pages);
++
++const char *innodb_read_ahead_names[]=
++{
++  "none", /* 0 */
++  "random",
++  "linear",
++  "both", /* 3 */
++  /* For compatibility of the older patch */
++  "0", /* 4 ("none" + 4) */
++  "1",
++  "2",
++  "3", /* 7 ("both" + 4) */
++  NullS
++};
++TYPELIB innodb_read_ahead_typelib=
++{
++  array_elements(innodb_read_ahead_names) - 1, "innodb_read_ahead_typelib",
++  innodb_read_ahead_names, NULL
++};
++sys_var_enum	sys_innodb_read_ahead("innodb_read_ahead", &srv_read_ahead,
++                                      &innodb_read_ahead_typelib, fix_innodb_read_ahead);
++sys_var_long_ptr	sys_innodb_adaptive_checkpoint("innodb_adaptive_checkpoint",
++                                                      &srv_adaptive_checkpoint);
+ sys_var_const_os_str_ptr sys_innodb_data_file_path("innodb_data_file_path", 
+                                                &innobase_data_file_path);
+ sys_var_const_os_str_ptr sys_innodb_data_home_dir("innodb_data_home_dir", 
+@@ -847,6 +859,12 @@
+   &sys_innodb_thread_concurrency,
+   &sys_innodb_commit_concurrency,
+   &sys_innodb_flush_log_at_trx_commit,
++  &sys_innodb_io_capacity,
++  &sys_innodb_ibuf_active_contract,
++  &sys_innodb_ibuf_accel_rate,
++  &sys_innodb_flush_neighbor_pages,
++  &sys_innodb_read_ahead,
++  &sys_innodb_adaptive_checkpoint,
+ #endif
+   &sys_trust_routine_creators,
+   &sys_trust_function_creators,
+@@ -982,6 +1000,15 @@
+   {sys_innodb_table_locks.name, (char*) &sys_innodb_table_locks, SHOW_SYS},
+   {sys_innodb_thread_concurrency.name, (char*) &sys_innodb_thread_concurrency, SHOW_SYS},
+   {sys_innodb_thread_sleep_delay.name, (char*) &sys_innodb_thread_sleep_delay, SHOW_SYS},
++  {sys_innodb_io_capacity.name, (char*) &sys_innodb_io_capacity, SHOW_SYS},
++  {"innodb_ibuf_max_size", (char*) &srv_ibuf_max_size, SHOW_LONGLONG},
++  {sys_innodb_ibuf_active_contract.name, (char*) &sys_innodb_ibuf_active_contract, SHOW_SYS},
++  {sys_innodb_ibuf_accel_rate.name, (char*) &sys_innodb_ibuf_accel_rate, SHOW_SYS},
++  {sys_innodb_flush_neighbor_pages.name, (char*) &sys_innodb_flush_neighbor_pages, SHOW_SYS},
++  {sys_innodb_read_ahead.name, (char*) &sys_innodb_read_ahead, SHOW_SYS},
++  {sys_innodb_adaptive_checkpoint.name, (char*) &sys_innodb_adaptive_checkpoint, SHOW_SYS},
++  {"innodb_read_io_threads", (char*) &innobase_read_io_threads, SHOW_LONG},
++  {"innodb_write_io_threads", (char*) &innobase_write_io_threads, SHOW_LONG},
+ #endif
+   {sys_interactive_timeout.name,(char*) &sys_interactive_timeout,   SHOW_SYS},
+   {sys_join_buffer_size.name,   (char*) &sys_join_buffer_size,	    SHOW_SYS},
+@@ -1482,6 +1501,13 @@
+   }
+ }
+
++#ifdef HAVE_INNOBASE_DB
++extern void fix_innodb_read_ahead(THD *thd, enum_var_type type)
++{
++  srv_read_ahead &= 3;
++}
++#endif /* HAVE_INNOBASE_DB */
++
+ static void fix_max_binlog_size(THD *thd, enum_var_type type)
+ {
+   DBUG_ENTER("fix_max_binlog_size");
+diff -ruN a/sql/set_var.h b/sql/set_var.h
+--- a/sql/set_var.h	2009-01-12 11:20:31.000000000 +0900
++++ b/sql/set_var.h	2009-01-12 15:26:35.000000000 +0900
+@@ -31,6 +31,10 @@
+
+ extern TYPELIB bool_typelib, delay_key_write_typelib, sql_mode_typelib;
+
++#ifdef HAVE_INNOBASE_DB
++extern TYPELIB innodb_read_ahead_typelib;
++#endif /* HAVE_INNOBASE_DB */
++
+ typedef int (*sys_check_func)(THD *,  set_var *);
+ typedef bool (*sys_update_func)(THD *, set_var *);
+ typedef void (*sys_after_update_func)(THD *,enum_var_type);
+@@ -1114,6 +1118,9 @@
+ int sql_set_variables(THD *thd, List<set_var_base> *var_list);
+ bool not_all_support_one_shot(List<set_var_base> *var_list);
+ void fix_delay_key_write(THD *thd, enum_var_type type);
++#ifdef HAVE_INNOBASE_DB
++void fix_innodb_read_ahead(THD *thd, enum_var_type type);
++#endif /* HAVE_INNOBASE_DB */
+ ulong fix_sql_mode(ulong sql_mode);
+ extern sys_var_const_str sys_charset_system;
+ extern sys_var_str sys_init_connect;
diff --git a/1006_mirror_binlog-percona-5.0.75-b12.patch b/1006_mirror_binlog-percona-5.0.75-b12.patch
new file mode 100644
index 0000000..4dae799
--- /dev/null
+++ b/1006_mirror_binlog-percona-5.0.75-b12.patch
@@ -0,0 +1,2694 @@
+diff -r 66cc9e0a6768 mysql-test/lib/mtr_cases.pl
+--- a/mysql-test/lib/mtr_cases.pl	Thu Dec 04 21:37:12 2008 -0800
++++ b/mysql-test/lib/mtr_cases.pl	Thu Dec 04 21:46:15 2008 -0800
+@@ -334,6 +334,10 @@
+ 
+     $tinfo->{'slave_num'}= 1; # Default for rpl* tests, use one slave
+ 
++    if ( $tname eq 'rpl_mirror_binlog' )
++    {
++      $tinfo->{'slave_num'}= 3;
++    }
+   }
+ 
+   if ( defined mtr_match_prefix($tname,"federated") )
+@@ -344,15 +348,20 @@
+ 
+   my $master_opt_file= "$testdir/$tname-master.opt";
+   my $slave_opt_file=  "$testdir/$tname-slave.opt";
+-  my $slave_mi_file=   "$testdir/$tname.slave-mi";
++  my $slave_mi_files=  ["$testdir/$tname.slave-mi",
++                        "$testdir/$tname.1.slave-mi",
++                        "$testdir/$tname.2.slave-mi"];
+   my $master_sh=       "$testdir/$tname-master.sh";
+   my $slave_sh=        "$testdir/$tname-slave.sh";
+   my $disabled_file=   "$testdir/$tname.disabled";
+   my $im_opt_file=     "$testdir/$tname-im.opt";
+ 
+-  $tinfo->{'master_opt'}= [];
+-  $tinfo->{'slave_opt'}=  [];
+-  $tinfo->{'slave_mi'}=   [];
++  $tinfo->{'master_opt'}=  [];
++  $tinfo->{'slave_opt'}=   [];
++  $tinfo->{'slave_mi'}=    {};
++  $tinfo->{'slave_mi'}{0}= [];
++  $tinfo->{'slave_mi'}{1}= [];
++  $tinfo->{'slave_mi'}{2}= [];
+ 
+   if ( -f $master_opt_file )
+   {
+@@ -427,9 +436,14 @@
+     push(@{$tinfo->{'slave_opt'}}, @$slave_opt);
+   }
+ 
+-  if ( -f $slave_mi_file )
++  my $mi_idx= 0;
++  foreach my $slave_mi_file ( @$slave_mi_files )
+   {
+-    $tinfo->{'slave_mi'}= mtr_get_opts_from_file($slave_mi_file);
++    if ( -f $slave_mi_file )
++    {
++      $tinfo->{'slave_mi'}{$mi_idx}= mtr_get_opts_from_file($slave_mi_file);
++    }
++    $mi_idx+= 1;
+   }
+ 
+   if ( -f $master_sh )
+diff -r 66cc9e0a6768 mysql-test/mysql-test-run.pl
+--- a/mysql-test/mysql-test-run.pl	Thu Dec 04 21:37:12 2008 -0800
++++ b/mysql-test/mysql-test-run.pl	Thu Dec 04 21:46:15 2008 -0800
+@@ -275,6 +275,7 @@
+ our $opt_stress_test_file=     "";
+ 
+ our $opt_warnings;
++our $opt_slave_innodb= 0;
+ 
+ our $opt_skip_ndbcluster= 0;
+ our $opt_skip_ndbcluster_slave= 0;
+@@ -299,6 +300,8 @@
+ our $used_binlog_format;
+ our $used_default_engine;
+ our $debug_compiled_binaries;
++
++our $current_testname=   "";
+ 
+ our %mysqld_variables;
+ 
+@@ -645,6 +648,7 @@
+              'testcase-timeout=i'       => \$opt_testcase_timeout,
+              'suite-timeout=i'          => \$opt_suite_timeout,
+              'warnings|log-warnings'    => \$opt_warnings,
++             'slave-innodb'             => \$opt_slave_innodb,
+ 
+              # Options which are no longer used
+              (map { $_ => \&warn_about_removed_option } @removed_options),
+@@ -1001,6 +1005,14 @@
+    {
+      $ENV{'BIG_TEST'}= 1;
+    }
++
++  # --------------------------------------------------------------------------
++  # Big test flags
++  # --------------------------------------------------------------------------
++  if ( $opt_big_test )
++  {
++    $ENV{'BIG_TEST'}= 1;
++  }
+ 
+   # --------------------------------------------------------------------------
+   # Gcov flag
+@@ -1885,7 +1897,9 @@
+   $ENV{'SLAVE_MYSOCK'}=       $slave->[0]->{'path_sock'};
+   $ENV{'SLAVE_MYPORT'}=       $slave->[0]->{'port'};
+   $ENV{'SLAVE_MYPORT1'}=      $slave->[1]->{'port'};
++  $ENV{'SLAVE_MYSOCK1'}=      $slave->[1]->{'path_sock'};
+   $ENV{'SLAVE_MYPORT2'}=      $slave->[2]->{'port'};
++  $ENV{'SLAVE_MYSOCK2'}=      $slave->[2]->{'path_sock'};
+   $ENV{'MYSQL_TCP_PORT'}=     $mysqld_variables{'port'};
+   $ENV{'DEFAULT_MASTER_PORT'}= $mysqld_variables{'master-port'};
+ 
+@@ -2375,6 +2389,8 @@
+   if ( ! $glob_win32 )
+   {
+     symlink("$glob_mysql_test_dir/std_data", "$opt_vardir/std_data_ln");
++    my @a = ("chmod", "-R", "o+r", "$glob_mysql_test_dir/std_data");
++    system(@a) == 0 or die "system @ failed: $?"
+   }
+   else
+   {
+@@ -3466,6 +3482,8 @@
+   $ENV{'TZ'}= $tinfo->{'timezone'};
+   mtr_verbose("Setting timezone: $tinfo->{'timezone'}");
+ 
++  $current_testname= $tinfo->{'name'};
++
+   my $master_restart= run_testcase_need_master_restart($tinfo);
+   my $slave_restart= run_testcase_need_slave_restart($tinfo);
+ 
+@@ -3881,7 +3899,8 @@
+       unless $mysqld->{'type'} eq 'slave';
+ 
+     mtr_add_arg($args, "%s--init-rpl-role=slave", $prefix);
+-    if (! ( $opt_skip_slave_binlog || $skip_binlog ))
++
++    if (! ($opt_skip_slave_binlog or ($current_testname eq 'rpl_mirror_binlog')) )
+     {
+       mtr_add_arg($args, "%s--log-bin=%s/log/slave%s-bin", $prefix,
+                   $opt_vardir, $sidx); # FIXME use own dir for binlogs
+@@ -4568,7 +4587,7 @@
+       if ( ! $slave->[$idx]->{'pid'} )
+       {
+ 	mysqld_start($slave->[$idx],$tinfo->{'slave_opt'},
+-		     $tinfo->{'slave_mi'});
++		     $tinfo->{'slave_mi'}{$idx});
+ 
+       }
+     }
+@@ -4580,7 +4599,6 @@
+   # Wait for clusters to start
+   foreach my $cluster (@{$clusters})
+   {
+-
+     next if !$cluster->{'pid'};
+ 
+     if (ndbcluster_wait_started($cluster, ""))
+@@ -5179,6 +5197,7 @@
+   skip-im               Don't start IM, and skip the IM test cases
+   big-test              Set the environment variable BIG_TEST, which can be
+                         checked from test cases.
++
+ 
+ Options that specify ports
+ 
+diff -r 66cc9e0a6768 mysql-test/r/rpl_mirror_binlog.result
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/mysql-test/r/rpl_mirror_binlog.result	Thu Dec 04 21:46:15 2008 -0800
+@@ -0,0 +1,441 @@
++stop slave;
++drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
++reset master;
++reset slave;
++drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
++start slave;
++drop table if exists t1;
++create table t1(n int) engine = InnoDB;
++insert into t1 values (300);
++insert into t1 values (299);
++insert into t1 values (298);
++insert into t1 values (297);
++insert into t1 values (296);
++insert into t1 values (295);
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++insert into t1 values (46);
++insert into t1 values (45);
++insert into t1 values (44);
++insert into t1 values (43);
++insert into t1 values (42);
++insert into t1 values (41);
++insert into t1 values (40);
++insert into t1 values (39);
++insert into t1 values (38);
++insert into t1 values (37);
++insert into t1 values (36);
++insert into t1 values (35);
++insert into t1 values (34);
++insert into t1 values (33);
++insert into t1 values (32);
++insert into t1 values (31);
++insert into t1 values (30);
++insert into t1 values (29);
++insert into t1 values (28);
++insert into t1 values (27);
++insert into t1 values (26);
++insert into t1 values (25);
++insert into t1 values (24);
++insert into t1 values (23);
++insert into t1 values (22);
++insert into t1 values (21);
++insert into t1 values (20);
++insert into t1 values (19);
++insert into t1 values (18);
++insert into t1 values (17);
++insert into t1 values (16);
++insert into t1 values (15);
++insert into t1 values (14);
++insert into t1 values (13);
++insert into t1 values (12);
++insert into t1 values (11);
++insert into t1 values (10);
++insert into t1 values (9);
++insert into t1 values (8);
++insert into t1 values (7);
++insert into t1 values (6);
++insert into t1 values (5);
++insert into t1 values (4);
++insert into t1 values (3);
++insert into t1 values (2);
++insert into t1 values (1);
++"The following are SLAVE."
++select count(distinct n) from t1;
++count(distinct n)
++300
++select min(n) from t1;
++min(n)
++1
++select max(n) from t1;
++max(n)
++300
++show slave status;
++Slave_IO_State	Master_Host	Master_User	Master_Port	Connect_Retry	Master_Log_File	Read_Master_Log_Pos	Relay_Log_File	Relay_Log_Pos	Relay_Master_Log_File	Slave_IO_Running	Slave_SQL_Running	Replicate_Do_DB	Replicate_Ignore_DB	Replicate_Do_Table	Replicate_Ignore_Table	Replicate_Wild_Do_Table	Replicate_Wild_Ignore_Table	Last_Errno	Last_Error	Skip_Counter	Exec_Master_Log_Pos	Relay_Log_Space	Until_Condition	Until_Log_File	Until_Log_Pos	Master_SSL_Allowed	Master_SSL_CA_File	Master_SSL_CA_Path	Master_SSL_Cert	Master_SSL_Cipher	Master_SSL_Key	Seconds_Behind_Master
++Waiting for master to send event	127.0.0.1	root	9306	1	master-bin.000014	2849	#	#	master-bin.000014	Yes	Yes						#	0		0	2849	#	None		0	No						#
++show master status;
++File	Position	Binlog_Do_DB	Binlog_Ignore_DB
++master-bin.000014	2849		
++"The following are SLAVE1."
++start slave;
++select count(distinct n) from t1;
++count(distinct n)
++300
++select min(n) from t1;
++min(n)
++1
++select max(n) from t1;
++max(n)
++300
++show slave status;
++Slave_IO_State	Master_Host	Master_User	Master_Port	Connect_Retry	Master_Log_File	Read_Master_Log_Pos	Relay_Log_File	Relay_Log_Pos	Relay_Master_Log_File	Slave_IO_Running	Slave_SQL_Running	Replicate_Do_DB	Replicate_Ignore_DB	Replicate_Do_Table	Replicate_Ignore_Table	Replicate_Wild_Do_Table	Replicate_Wild_Ignore_Table	Last_Errno	Last_Error	Skip_Counter	Exec_Master_Log_Pos	Relay_Log_Space	Until_Condition	Until_Log_File	Until_Log_Pos	Master_SSL_Allowed	Master_SSL_CA_File	Master_SSL_CA_Path	Master_SSL_Cert	Master_SSL_Cipher	Master_SSL_Key	Seconds_Behind_Master
++Waiting for master to send event	127.0.0.1	root	9308	1	master-bin.000014	2849	#	#	master-bin.000014	Yes	Yes						#	0		0	2849	#	None		0	No						#
++"The following are SLAVE."
++MAKE MASTER MASTER_LOG_FILE='master-bin',
++MASTER_SERVER_ID=2,
++INDEX='replication-log';
++ERROR HY000: Could not initialize master info structure; more error messages can be found in the MySQL error log
++stop slave;
++MAKE MASTER MASTER_LOG_FILE='master-bin',
++MASTER_SERVER_ID=2,
++INDEX='replication_log';
++ERROR HY000: Could not initialize master info structure; more error messages can be found in the MySQL error log
++MAKE MASTER REVOKE SESSION WITH KILL;
++MAKE MASTER MASTER_LOG_FILE='master-bin',
++MASTER_SERVER_ID=2,
++INDEX='replication_log'
++            WITH BINLOG;
++MAKE MASTER GRANT SESSION;
++delete from t1 where n > 250;
++select count(distinct n) from t1;
++count(distinct n)
++250
++"The following are SLAVE1."
++select count(distinct n) from t1;
++count(distinct n)
++250
++select min(n) from t1;
++min(n)
++1
++select max(n) from t1;
++max(n)
++250
++"The following are SLAVE2."
++start slave;
++select count(distinct n) from t1;
++count(distinct n)
++250
++select min(n) from t1;
++min(n)
++1
++select max(n) from t1;
++max(n)
++250
++show slave status;
++Slave_IO_State	Master_Host	Master_User	Master_Port	Connect_Retry	Master_Log_File	Read_Master_Log_Pos	Relay_Log_File	Relay_Log_Pos	Relay_Master_Log_File	Slave_IO_Running	Slave_SQL_Running	Replicate_Do_DB	Replicate_Ignore_DB	Replicate_Do_Table	Replicate_Ignore_Table	Replicate_Wild_Do_Table	Replicate_Wild_Ignore_Table	Last_Errno	Last_Error	Skip_Counter	Exec_Master_Log_Pos	Relay_Log_Space	Until_Condition	Until_Log_File	Until_Log_Pos	Master_SSL_Allowed	Master_SSL_CA_File	Master_SSL_CA_Path	Master_SSL_Cert	Master_SSL_Cipher	Master_SSL_Key	Seconds_Behind_Master
++Waiting for master to send event	127.0.0.1	root	9308	1	master-bin.000015	189	#	#	master-bin.000015	Yes	Yes						#	0		0	189	#	None		0	No						#
++drop table t1;
++drop table t1;
++"The following are SLAVE."
++show master logs;
++Log_name	File_size
++master-bin.000001	4214
++master-bin.000002	4212
++master-bin.000003	4212
++master-bin.000004	4212
++master-bin.000005	4212
++master-bin.000006	4212
++master-bin.000007	4212
++master-bin.000008	4212
++master-bin.000009	4212
++master-bin.000010	4194
++master-bin.000011	4190
++master-bin.000012	4190
++master-bin.000013	4190
++master-bin.000014	2849
++master-bin.000015	265
++show master status;
++File	Position	Binlog_Do_DB	Binlog_Ignore_DB
++master-bin.000015	265		
++"The following are SLAVE2."
++show master logs;
++Log_name	File_size
++master-bin.000001	4214
++master-bin.000002	4212
++master-bin.000003	4212
++master-bin.000004	4212
++master-bin.000005	4212
++master-bin.000006	4212
++master-bin.000007	4212
++master-bin.000008	4212
++master-bin.000009	4212
++master-bin.000010	4194
++master-bin.000011	4190
++master-bin.000012	4190
++master-bin.000013	4190
++master-bin.000014	2849
++master-bin.000015	265
++show master status;
++File	Position	Binlog_Do_DB	Binlog_Ignore_DB
++master-bin.000015	265		
++purge master logs to 'master-bin.000006';
++show master logs;
++Log_name	File_size
++master-bin.000006	4212
++master-bin.000007	4212
++master-bin.000008	4212
++master-bin.000009	4212
++master-bin.000010	4194
++master-bin.000011	4190
++master-bin.000012	4190
++master-bin.000013	4190
++master-bin.000014	2849
++master-bin.000015	265
++reset master;
++ERROR HY000: Binlog closed, cannot RESET MASTER
+diff -r 66cc9e0a6768 mysql-test/t/rpl_mirror_binlog-master.opt
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/mysql-test/t/rpl_mirror_binlog-master.opt	Thu Dec 04 21:46:15 2008 -0800
+@@ -0,0 +1,1 @@
++-O max_binlog_size=4096
+diff -r 66cc9e0a6768 mysql-test/t/rpl_mirror_binlog-slave.opt
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/mysql-test/t/rpl_mirror_binlog-slave.opt	Thu Dec 04 21:46:15 2008 -0800
+@@ -0,0 +1,1 @@
++--rpl_mirror_binlog_enabled=1 --log-bin-index=replication_log
+diff -r 66cc9e0a6768 mysql-test/t/rpl_mirror_binlog.1.slave-mi
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/mysql-test/t/rpl_mirror_binlog.1.slave-mi	Thu Dec 04 21:46:15 2008 -0800
+@@ -0,0 +1,1 @@
++--master-user=root --master-connect-retry=1 --master-host=127.0.0.1 --master-password="" --master-port=9308 --server-id=3 
+diff -r 66cc9e0a6768 mysql-test/t/rpl_mirror_binlog.2.slave-mi
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/mysql-test/t/rpl_mirror_binlog.2.slave-mi	Thu Dec 04 21:46:15 2008 -0800
+@@ -0,0 +1,1 @@
++--master-user=root --master-connect-retry=1 --master-host=127.0.0.1 --master-password="" --master-port=9308 --server-id=4 
+diff -r 66cc9e0a6768 mysql-test/t/rpl_mirror_binlog.test
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/mysql-test/t/rpl_mirror_binlog.test	Thu Dec 04 21:46:15 2008 -0800
+@@ -0,0 +1,119 @@
++-- source include/master-slave.inc
++-- source include/have_innodb.inc
++connect (slave_sec,localhost,root,,test,$SLAVE_MYPORT1,$SLAVE_MYSOCK1); 
++connect (slave_ter,localhost,root,,test,$SLAVE_MYPORT2,$SLAVE_MYSOCK2); 
++
++connection master;
++--disable_warnings
++drop table if exists t1;
++--enable_warnings
++create table t1(n int) engine = InnoDB;
++
++let $i=300;
++while ($i)
++{
++  eval insert into t1 values ($i);
++  dec $i;
++}
++
++save_master_pos;
++
++connection slave;
++sync_with_master;
++
++echo "The following are SLAVE.";
++select count(distinct n) from t1;
++select min(n) from t1;
++select max(n) from t1;
++--replace_column 8 # 9 # 18 # 23 # 33 #
++show slave status;
++show master status;
++
++connection slave_sec;
++echo "The following are SLAVE1.";
++start slave;
++sync_with_master;
++
++select count(distinct n) from t1;
++select min(n) from t1;
++select max(n) from t1;
++--replace_column 8 # 9 # 18 # 23 # 33 #
++show slave status;
++
++# make the slave the new master
++connection slave;
++echo "The following are SLAVE.";
++
++# The first 1201 error is caused by running slave.
++--error 1201
++MAKE MASTER MASTER_LOG_FILE='master-bin',
++            MASTER_SERVER_ID=2,
++            INDEX='replication-log';
++stop slave;
++
++# The second 1201 error is caused by failover mode.
++--error 1201
++MAKE MASTER MASTER_LOG_FILE='master-bin',
++            MASTER_SERVER_ID=2,
++            INDEX='replication_log';
++
++MAKE MASTER REVOKE SESSION WITH KILL;
++MAKE MASTER MASTER_LOG_FILE='master-bin',
++            MASTER_SERVER_ID=2,
++            INDEX='replication_log'
++            WITH BINLOG;
++
++MAKE MASTER GRANT SESSION;
++
++delete from t1 where n > 250;
++save_master_pos;
++
++select count(distinct n) from t1;
++
++connection slave_sec;
++echo "The following are SLAVE1.";
++
++sync_with_master;
++select count(distinct n) from t1;
++select min(n) from t1;
++select max(n) from t1;
++
++connection slave_ter;
++echo "The following are SLAVE2.";
++start slave;
++sync_with_master;
++
++select count(distinct n) from t1;
++select min(n) from t1;
++select max(n) from t1;
++
++--replace_column 8 # 9 # 18 # 23 # 33 #
++show slave status;
++
++connection master;
++drop table t1;
++
++connection slave;
++drop table t1;
++save_master_pos;
++
++connection slave_sec;
++sync_with_master;
++
++connection slave;
++echo "The following are SLAVE.";
++
++show master logs;
++show master status;
++
++
++connection slave_ter;
++echo "The following are SLAVE2.";
++sync_with_master;
++
++show master logs;
++show master status;
++purge master logs to 'master-bin.000006';
++show master logs;
++--error 1186
++reset master;
+diff -r 66cc9e0a6768 patch_info/mirror_binlog.info
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/patch_info/mirror_binlog.info	Thu Dec 04 21:46:15 2008 -0800
+@@ -0,0 +1,6 @@
++File=mirror_binlog.patch
++Name=Mirroring binary logs on slave
++Version=V1
++Author=Google
++License=GPL
++Comment=contains FastMaster promotion patch
+diff -r 66cc9e0a6768 sql/Makefile.am
+--- a/sql/Makefile.am	Thu Dec 04 21:37:12 2008 -0800
++++ b/sql/Makefile.am	Thu Dec 04 21:46:15 2008 -0800
+@@ -68,7 +68,7 @@
+ 			sql_array.h sql_cursor.h \
+ 			examples/ha_example.h ha_archive.h \
+ 			examples/ha_tina.h ha_blackhole.h  \
+-			ha_federated.h
++			ha_federated.h repl_mule.h
+ mysqld_SOURCES =	sql_lex.cc sql_handler.cc \
+ 			item.cc item_sum.cc item_buff.cc item_func.cc \
+ 			item_cmpfunc.cc item_strfunc.cc item_timefunc.cc \
+@@ -105,7 +105,7 @@
+ 			sp_cache.cc parse_file.cc sql_trigger.cc \
+ 			examples/ha_example.cc ha_archive.cc \
+ 			examples/ha_tina.cc ha_blackhole.cc \
+-			ha_federated.cc
++			ha_federated.cc repl_mule.cc
+ 
+ gen_lex_hash_SOURCES =	gen_lex_hash.cc
+ gen_lex_hash_LDADD =	$(LDADD) $(CXXLDFLAGS)
+diff -r 66cc9e0a6768 sql/Makefile.in
+--- a/sql/Makefile.in	Thu Dec 04 21:37:12 2008 -0800
++++ b/sql/Makefile.in	Thu Dec 04 21:46:15 2008 -0800
+@@ -152,7 +152,7 @@
+ 	sp_rcontext.$(OBJEXT) sp.$(OBJEXT) sp_cache.$(OBJEXT) \
+ 	parse_file.$(OBJEXT) sql_trigger.$(OBJEXT) \
+ 	ha_example.$(OBJEXT) ha_archive.$(OBJEXT) ha_tina.$(OBJEXT) \
+-	ha_blackhole.$(OBJEXT) ha_federated.$(OBJEXT)
++	ha_blackhole.$(OBJEXT) ha_federated.$(OBJEXT) repl_mule.$(OBJEXT) 
+ mysqld_OBJECTS = $(am_mysqld_OBJECTS)
+ mysqld_DEPENDENCIES = $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_2) \
+ 	$(am__DEPENDENCIES_2) $(am__DEPENDENCIES_2) \
+@@ -516,7 +516,7 @@
+ 			sql_array.h sql_cursor.h \
+ 			examples/ha_example.h ha_archive.h \
+ 			examples/ha_tina.h ha_blackhole.h  \
+-			ha_federated.h
++			ha_federated.h repl_mule.h
+ 
+ mysqld_SOURCES = sql_lex.cc sql_handler.cc \
+ 			item.cc item_sum.cc item_buff.cc item_func.cc \
+@@ -554,7 +554,7 @@
+ 			sp_cache.cc parse_file.cc sql_trigger.cc \
+ 			examples/ha_example.cc ha_archive.cc \
+ 			examples/ha_tina.cc ha_blackhole.cc \
+-			ha_federated.cc
++			ha_federated.cc repl_mule.cc
+ 
+ gen_lex_hash_SOURCES = gen_lex_hash.cc
+ gen_lex_hash_LDADD = $(LDADD) $(CXXLDFLAGS)
+@@ -748,6 +748,7 @@
+ @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/protocol.Po@am__quote@
+ @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/records.Po@am__quote@
+ @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/repl_failsafe.Po@am__quote@
++@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/repl_mule.Po@am__quote@
+ @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/set_var.Po@am__quote@
+ @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/slave.Po@am__quote@
+ @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/sp.Po@am__quote@
+diff -r 66cc9e0a6768 sql/lex.h
+--- a/sql/lex.h	Thu Dec 04 21:37:12 2008 -0800
++++ b/sql/lex.h	Thu Dec 04 21:46:15 2008 -0800
+@@ -292,6 +292,7 @@
+   { "LONGTEXT",		SYM(LONGTEXT)},
+   { "LOOP",             SYM(LOOP_SYM)},
+   { "LOW_PRIORITY",	SYM(LOW_PRIORITY)},
++  { "MAKE",             SYM(MAKE_SYM)},
+   { "MASTER",           SYM(MASTER_SYM)},
+   { "MASTER_CONNECT_RETRY",           SYM(MASTER_CONNECT_RETRY_SYM)},
+   { "MASTER_HOST",           SYM(MASTER_HOST_SYM)},
+diff -r 66cc9e0a6768 sql/log.cc
+--- a/sql/log.cc	Thu Dec 04 21:37:12 2008 -0800
++++ b/sql/log.cc	Thu Dec 04 21:46:15 2008 -0800
+@@ -79,7 +79,9 @@
+ 
+ bool binlog_init()
+ {
+-  return !opt_bin_log;
++  if (!opt_bin_log)
++    binlog_hton.prepare = NULL;
++  return 0; /* return !opt_bin_log; */
+ }
+ 
+ static int binlog_close_connection(THD *thd)
+@@ -406,6 +408,7 @@
+   :bytes_written(0), last_time(0), query_start(0), name(0),
+    prepared_xids(0), log_type(LOG_CLOSED), file_id(1), open_count(1),
+    write_error(FALSE), inited(FALSE), need_start_event(TRUE),
++   mule_binlog_(0),
+    description_event_for_exec(0), description_event_for_queue(0)
+ {
+   /*
+@@ -506,7 +509,10 @@
+                                 const char *log_name)
+ {
+   File index_file_nr= -1;
+-  DBUG_ASSERT(!my_b_inited(&index_file));
++
++  /* If the index is already opened, do not open it again. */
++  if (my_b_inited(&index_file))
++    return FALSE;
+ 
+   /*
+     First open of this class instance
+@@ -750,7 +756,7 @@
+   if (file >= 0)
+     my_close(file,MYF(0));
+   end_io_cache(&log_file);
+-  end_io_cache(&index_file);
++  close_index_file();
+   safeFree(name);
+   log_type= LOG_CLOSED;
+   DBUG_RETURN(1);
+@@ -768,7 +774,10 @@
+ int MYSQL_LOG::raw_get_current_log(LOG_INFO* linfo)
+ {
+   strmake(linfo->log_file_name, log_file_name, sizeof(linfo->log_file_name)-1);
+-  linfo->pos = my_b_tell(&log_file);
++  if (!mule_binlog_)
++    linfo->pos = my_b_tell(&log_file);
++  else
++    linfo->pos = my_b_filelength(&log_file);
+   return 0;
+ }
+ 
+@@ -935,6 +944,11 @@
+   if (need_lock)
+     pthread_mutex_lock(&LOCK_index);
+   safe_mutex_assert_owner(&LOCK_index);
++
++  if (open_index_file(index_file_name, NULL) != 0) {
++    error = -1;
++    goto err;
++  }
+ 
+   /* As the file is flushed, we can't get an error here */
+   (void) reinit_io_cache(&index_file, READ_CACHE, linfo->index_file_offset, 0,
+@@ -1446,18 +1460,19 @@
+   SYNOPSIS
+     new_file()
+     need_lock		Set to 1 if caller has not locked LOCK_log
++    logfile_name        the specified log filename.
+ 
+   NOTE
+     The new file name is stored last in the index file
+ */
+ 
+-void MYSQL_LOG::new_file(bool need_lock)
++void MYSQL_LOG::new_file(bool need_lock, const char* log_filename)
+ {
+   char new_name[FN_REFLEN], *new_name_ptr, *old_name;
+   enum_log_type save_log_type;
+ 
+   DBUG_ENTER("MYSQL_LOG::new_file");
+-  if (!is_open())
++  if (!is_log_open())
+   {
+     DBUG_PRINT("info",("log is closed"));
+     DBUG_VOID_RETURN;
+@@ -1496,7 +1511,9 @@
+     We have to do this here and not in open as we want to store the
+     new file name in the current binary log file.
+   */
+-  if (generate_new_name(new_name, name))
++  if (log_filename) {
++    fn_format(new_name,log_filename,mysql_data_home,"",4);
++  } else if (generate_new_name(new_name, name))
+     goto end;
+   new_name_ptr=new_name;
+ 
+@@ -1571,7 +1588,7 @@
+   bytes_written+= ev->data_written;
+   DBUG_PRINT("info",("max_size: %lu",max_size));
+   if ((uint) my_b_append_tell(&log_file) > max_size)
+-    new_file(0);
++   new_file(0);
+ 
+ err:
+   pthread_mutex_unlock(&LOCK_log);
+@@ -1600,8 +1617,14 @@
+     bytes_written += len;
+   } while ((buf=va_arg(args,const char*)) && (len=va_arg(args,uint)));
+   DBUG_PRINT("info",("max_size: %lu",max_size));
+-  if ((uint) my_b_append_tell(&log_file) > max_size)
+-    new_file(0);
++
++  /* If max_size is BINLOG_NOSWITCH_SIZE, binlog would not switch because
++   * of file size limit.
++   */
++  if (max_size != BINLOG_NOSWITCH_SIZE &&
++      (uint) my_b_append_tell(&log_file) > max_size) {
++     new_file(0);
++  }
+ 
+ err:
+   if (!error)
+@@ -2492,6 +2515,17 @@
+   DBUG_VOID_RETURN;
+ }
+ 
++int MYSQL_LOG::flush_log_file() {
++  return flush_io_cache(&log_file);
++}
++
++int MYSQL_LOG::close_index_file() {
++  if (my_b_inited(&index_file)) {
++    end_io_cache(&index_file);
++    my_close(index_file.file, MYF(0));
++  }
++  return 0;
++}
+ 
+ /*
+   Check if a string is a valid number
+diff -r 66cc9e0a6768 sql/log_event.h
+--- a/sql/log_event.h	Thu Dec 04 21:37:12 2008 -0800
++++ b/sql/log_event.h	Thu Dec 04 21:46:15 2008 -0800
+@@ -94,6 +94,14 @@
+ #define LINE_TERM_EMPTY		0x4
+ #define LINE_START_EMPTY	0x8
+ #define ESCAPED_EMPTY		0x10
++
++/* This server-id value is used to indicate a special master-info event
++ * in relay-log.
++ * We will enforce in database that replication can not set this value
++ * as the server-id.
++ */
++#define MASTER_INFO_SERVER_ID 0xffffffff
++
+ 
+ /*****************************************************************************
+ 
+diff -r 66cc9e0a6768 sql/mysql_priv.h
+--- a/sql/mysql_priv.h	Thu Dec 04 21:37:12 2008 -0800
++++ b/sql/mysql_priv.h	Thu Dec 04 21:46:15 2008 -0800
+@@ -462,6 +462,7 @@
+ /* BINLOG_DUMP options */
+ 
+ #define BINLOG_DUMP_NON_BLOCK   1
++#define BINLOG_MIRROR_CLIENT    0x0004
+ 
+ /* sql_show.cc:show_log_files() */
+ #define SHOW_LOG_STATUS_FREE "FREE"
+@@ -1374,6 +1375,7 @@
+ extern const char **errmesg;			/* Error messages */
+ extern const char *myisam_recover_options_str;
+ extern const char *in_left_expr_name, *in_additional_cond, *in_having_cond;
++extern char *opt_binlog_index_name;
+ extern const char * const triggers_file_ext;
+ extern const char * const trigname_file_ext;
+ extern Eq_creator eq_creator;
+@@ -1875,6 +1877,10 @@
+ extern "C" void unireg_abort(int exit_code);
+ void kill_delayed_threads(void);
+ bool check_stack_overrun(THD *thd, long margin, char *dummy);
++extern my_bool rpl_mirror_binlog_enabled;
++extern ulong sync_mirror_binlog_period;
++extern my_bool rpl_mirror_binlog_no_replicate;
++extern ulong rpl_mirror_binlog_clients, rpl_mirror_binlog_status;
+ #else
+ #define unireg_abort(exit_code) DBUG_RETURN(exit_code)
+ inline void kill_delayed_threads(void) {}
+diff -r 66cc9e0a6768 sql/mysqld.cc
+--- a/sql/mysqld.cc	Thu Dec 04 21:37:12 2008 -0800
++++ b/sql/mysqld.cc	Thu Dec 04 21:46:15 2008 -0800
+@@ -555,6 +555,7 @@
+ pthread_mutex_t LOCK_global_user_client_stats;
+ pthread_mutex_t LOCK_global_table_stats;
+ pthread_mutex_t LOCK_global_index_stats;
++pthread_mutex_t LOCK_failover_master;
+ /*
+   The below lock protects access to two global server variables:
+   max_prepared_stmt_count and prepared_stmt_count. These variables
+@@ -584,13 +585,15 @@
+ char *master_ssl_key, *master_ssl_cert;
+ char *master_ssl_ca, *master_ssl_capath, *master_ssl_cipher;
+ 
++char *opt_binlog_index_name;
++
+ /* Static variables */
+ 
+ static bool kill_in_progress, segfaulted;
+ static my_bool opt_do_pstack, opt_bootstrap, opt_myisam_log;
+ static int cleanup_done;
+ static ulong opt_specialflag, opt_myisam_block_size;
+-static char *opt_logname, *opt_update_logname, *opt_binlog_index_name;
++static char *opt_logname, *opt_update_logname;
+ static char *opt_tc_heuristic_recover;
+ static char *mysql_home_ptr, *pidfile_name_ptr;
+ static char **defaults_argv;
+@@ -598,6 +601,32 @@
+ 
+ static my_socket unix_sock,ip_sock;
+ struct rand_struct sql_rand; // used by sql_class.cc:THD::THD()
++
++/* When set, we are inside a failover slave and deny all non-super access */
++bool failover_deny_access= 0;
++
++/* When set, binlog will be mirrored on the replica. */
++my_bool rpl_mirror_binlog_enabled;
++
++/* Sync the mirrored binlog to disk after every #th event. */
++ulong sync_mirror_binlog_period;
++
++/* The fixed size for replication event buffer.  Replication event can exceed
++ * the size.
++ */
++//ulong rpl_event_buffer_size;
++
++/* This is a mirror binlog status variable on the primary to indicate how many
++ * mirror binlog servers are connecting.
++ */
++ulong rpl_mirror_binlog_clients = 0;
++
++/* This indicates whether mirror binlog is working on a replica database.  It
++ * requires:
++ *  . rpl_mirror_binlog_enabled = 1
++ *  . the slave I/O thread is running and mirror binlog is also dumped
++ */
++ulong rpl_mirror_binlog_status = 0;
+ 
+ /* OS specific variables */
+ 
+@@ -1315,6 +1344,7 @@
+   (void) pthread_cond_destroy(&COND_flush_thread_cache);
+   (void) pthread_cond_destroy(&COND_manager);
+   (void) pthread_mutex_destroy(&LOCK_stats);
++  (void) pthread_mutex_destroy(&LOCK_failover_master);
+   (void) pthread_mutex_destroy(&LOCK_global_user_client_stats);
+   (void) pthread_mutex_destroy(&LOCK_global_table_stats);
+   (void) pthread_mutex_destroy(&LOCK_global_index_stats);
+@@ -3164,6 +3194,7 @@
+   (void) pthread_cond_init(&COND_rpl_status, NULL);
+ #endif
+   (void) pthread_mutex_init(&LOCK_stats, MY_MUTEX_INIT_FAST);
++  (void) pthread_mutex_init(&LOCK_failover_master, MY_MUTEX_INIT_FAST);
+   (void) pthread_mutex_init(&LOCK_global_user_client_stats, MY_MUTEX_INIT_FAST);
+   (void) pthread_mutex_init(&LOCK_global_table_stats, MY_MUTEX_INIT_FAST);
+   (void) pthread_mutex_init(&LOCK_global_index_stats, MY_MUTEX_INIT_FAST);
+@@ -3398,39 +3429,8 @@
+ 
+   if (opt_bin_log)
+   {
+-    char buf[FN_REFLEN];
+-    const char *ln;
+-    ln= mysql_bin_log.generate_name(opt_bin_logname, "-bin", 1, buf);
+-    if (!opt_bin_logname && !opt_binlog_index_name)
+-    {
+-      /*
+-        User didn't give us info to name the binlog index file.
+-        Picking `hostname`-bin.index like did in 4.x, causes replication to
+-        fail if the hostname is changed later. So, we would like to instead
+-        require a name. But as we don't want to break many existing setups, we
+-        only give warning, not error.
+-      */
+-      sql_print_warning("No argument was provided to --log-bin, and "
+-                        "--log-bin-index was not used; so replication "
+-                        "may break when this MySQL server acts as a "
+-                        "master and has his hostname changed!! Please "
+-                        "use '--log-bin=%s' to avoid this problem.", ln);
+-    }
+-    if (ln == buf)
+-    {
+-      my_free(opt_bin_logname, MYF(MY_ALLOW_ZERO_PTR));
+-      opt_bin_logname=my_strdup(buf, MYF(0));
+-    }
+-    if (mysql_bin_log.open_index_file(opt_binlog_index_name, ln))
+-    {
+-      unireg_abort(1);
+-    }
+-
+-    /*
+-      Used to specify which type of lock we need to use for queries of type
+-      INSERT ... SELECT. This will change when we have row level logging.
+-    */
+-    using_update_log=1;
++    if (make_master_open_index(&opt_bin_logname, opt_binlog_index_name) != 0)
++      unireg_abort(1);
+   }
+ 
+   if (xid_cache_init())
+@@ -3480,9 +3480,10 @@
+     unireg_abort(1);
+   }
+ 
+-  if (opt_bin_log && mysql_bin_log.open(opt_bin_logname, LOG_BIN, 0,
+-                                        WRITE_CACHE, 0, max_binlog_size, 0))
+-    unireg_abort(1);
++  if (opt_bin_log &&
++      make_master(NULL, opt_bin_logname, opt_binlog_index_name, NULL) != 0) {
++    unireg_abort(1);
++  }
+ 
+ #ifdef HAVE_REPLICATION
+   if (opt_bin_log && expire_logs_days)
+@@ -5036,6 +5037,8 @@
+   OPT_INNODB_READ_IO_THREADS,
+   OPT_INNODB_WRITE_IO_THREADS,
+   OPT_INNODB_ADAPTIVE_HASH_INDEX,
++  OPT_RPL_MIRROR_BINLOG,
++  OPT_SYNC_MIRROR_BINLOG,
+   OPT_FEDERATED
+ };
+ 
+@@ -5725,6 +5728,11 @@
+   {"rpl-recovery-rank", OPT_RPL_RECOVERY_RANK, "Undocumented.",
+    (gptr*) &rpl_recovery_rank, (gptr*) &rpl_recovery_rank, 0, GET_ULONG,
+    REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
++  {"rpl_mirror_binlog_enabled", OPT_RPL_MIRROR_BINLOG,
++   "1 = support mirroring binlogs.  0 = disable mirroring binlogs",
++   (gptr*) &rpl_mirror_binlog_enabled,
++   (gptr*) &rpl_mirror_binlog_enabled, 0, GET_BOOL, NO_ARG,
++   0, 0, 1, 0, 1, 0},
+   {"safe-mode", OPT_SAFE, "Skip some optimize stages (for testing).",
+    0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
+ #ifndef TO_BE_DELETED
+@@ -5849,6 +5857,11 @@
+   {"symbolic-links", 's', "Enable symbolic link support.",
+    (gptr*) &my_use_symdir, (gptr*) &my_use_symdir, 0, GET_BOOL, NO_ARG,
+    IF_PURIFY(0,1), 0, 0, 0, 0, 0},
++  {"sync-mirror-binlog", OPT_SYNC_MIRROR_BINLOG,
++   "Sync the mirrored binlog to disk after every #th event. "
++   "#=0 (the default) does no sync. Syncing slows MySQL down",
++   (gptr*) &sync_mirror_binlog_period,
++   (gptr*) &sync_mirror_binlog_period, 0, GET_ULONG, REQUIRED_ARG, 0, 0, ~0L, 0, 1, 0},
+   {"sysdate-is-now", OPT_SYSDATE_IS_NOW,
+    "Non-default option to alias SYSDATE() to NOW() to make it safe-replicable. Since 5.0, SYSDATE() returns a `dynamic' value different for different invocations, even within the same statement.",
+    (gptr*) &global_system_variables.sysdate_is_now,
+@@ -6625,6 +6638,7 @@
+   {"Delayed_errors",           (char*) &delayed_insert_errors,  SHOW_LONG},
+   {"Delayed_insert_threads",   (char*) &delayed_insert_threads, SHOW_LONG_CONST},
+   {"Delayed_writes",           (char*) &delayed_insert_writes,  SHOW_LONG},
++  {"Failover_deny_access",     (char*) &failover_deny_access,   SHOW_LONG},
+   {"Flush_commands",           (char*) &refresh_version,        SHOW_LONG_CONST},
+   {"Handler_commit",           (char*) offsetof(STATUS_VAR, ha_commit_count), SHOW_LONG_STATUS},
+   {"Handler_delete",           (char*) offsetof(STATUS_VAR, ha_delete_count), SHOW_LONG_STATUS},
+diff -r 66cc9e0a6768 sql/repl_mule.cc
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/sql/repl_mule.cc	Thu Dec 04 21:46:15 2008 -0800
+@@ -0,0 +1,466 @@
++/*
++ Copyright (C) 2007 Google Inc.
++                                                                                                                                                    
++This program is free software; you can redistribute it and/or
++modify it under the terms of the GNU General Public License
++as published by the Free Software Foundation; either version 2
++of the License, or (at your option) any later version.
++                                                                                                                                                    
++This program is distributed in the hope that it will be useful,
++but WITHOUT ANY WARRANTY; without even the implied warranty of
++MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++GNU General Public License for more details.
++                                                                                                                                                    
++You should have received a copy of the GNU General Public License
++along with this program; if not, write to the Free Software
++Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
++*/
++
++#include "mysql_priv.h"
++#include <my_dir.h>
++#include "slave.h"
++#include "repl_mule.h"
++
++/* max log size: 2GB */
++#define MAX_LOG_SIZE BINLOG_NOSWITCH_SIZE
++
++ReplMule::ReplMule(THD* thd, MASTER_INFO *mi, RelayStatus status,
++                   my_off_t file_size, const char *binlog_indexname,
++                   MYSQL_LOG *binlog, ulong sync_period)
++  : desc_event_(new Format_description_log_event(BINLOG_VERSION)),
++    io_thd_(thd), mi_(mi), status_(status), dump_position_(0L),
++    file_size_(file_size), mule_log_(binlog),
++    mule_log_sync_period_(sync_period), mule_log_event_counter_(0) {
++  char llbuf1[22], llbuf2[22];
++
++  DBUG_ENTER("ReplMule::ReplMule");
++
++  /* Indicate that we are in replication mule mode. */
++  mule_log_->set_mule_mode();
++
++  strmake(curr_log_filename_, mi->master_log_name,
++          sizeof(curr_log_filename_)-1);
++  strmake(mule_indexname_, binlog_indexname, sizeof(mule_indexname_)-1);
++
++  /* Open the mule log file */
++  if (!mule_log_->is_log_open()) {
++    /* Do not open binlog file when master_log_name is not specified.  We
++     * are at the I/O thread initialization time and we do not know what
++     * filename we are going to dump.
++     * We wait for the next rotation event to indicate the filename.
++     */
++    if (strlen(curr_log_filename_) > 0 &&
++        mule_log_->open(curr_log_filename_, LOG_BIN, NULL,
++                        SEQ_READ_APPEND, true, MAX_LOG_SIZE, 0) != 0) {
++      sql_print_error("ReplMule: open binlog failed: %s",
++                      curr_log_filename_);
++      status_ = MULE_ERROR;
++      DBUG_VOID_RETURN;
++    }
++  }
++
++  switch (status_) {
++    case MULE_BEHIND:
++      dump_position_     = mi->master_log_pos;
++      mi->master_log_pos = file_size_;
++      sql_print_information("ReplicationMule: MULE_BEHIND - new(%s), old(%s)",
++                            llstr(mi->master_log_pos, llbuf1),
++                            llstr(dump_position_, llbuf2));
++      break;
++    case RELAY_MATCH_MULE:
++    case RELAY_MATCH_MULE_RUN:
++      dump_position_     = mi->master_log_pos;
++      sql_print_information("ReplicationMule: RELAY_MATCH_MULE.");
++      break;
++    case MULE_VERIFY:
++    case MULE_VERIFY_RELAY_BEHIND:
++      dump_position_     = mi->master_log_pos;
++      mi->master_log_pos = BIN_LOG_HEADER_SIZE;
++      sql_print_information(
++          "ReplicationMule: MULE_VERIFY - old(%s), file_size(%s)",
++          llstr(dump_position_, llbuf1), llstr(file_size_, llbuf2));
++
++      /* seek to the beginning of the file for verification */
++      seekToPosition(BIN_LOG_HEADER_SIZE);
++      break;
++  }
++  
++  DBUG_VOID_RETURN;
++}
++
++ReplMule::~ReplMule() {
++  DBUG_ENTER("ReplMule::~ReplMule");
++
++  if (mule_log_->is_log_open())
++    mule_log_->close(LOG_CLOSE_INDEX);
++  mule_log_->clear_mule_mode();
++
++  /* If we are still in MULE_BEHIND or MULE_VERIFY state and we exit from
++   * I/O thread, it means we encountered some errors.
++   * mi->master_log_pos might be used by later slave start.  It is being
++   * changed here to do event dumping or event verification.  So, we should
++   * restore it to its original value.
++   */
++  switch (status_) {
++    case MULE_BEHIND:
++    case MULE_VERIFY:
++      if (mi_->master_log_pos < dump_position_)
++        mi_->master_log_pos = dump_position_;
++      break;
++  }
++
++  delete desc_event_;
++
++  DBUG_VOID_RETURN;
++}
++
++ReplMule::WriteStatus ReplMule::writeEvent(const char* buf, ulong event_len) {
++  WriteStatus dump_status = WRITE_RELAY;
++  char  llbuf1[22], llbuf2[22], llbuf3[22];
++  char *verify_event;
++  bool  verified = false;
++  bool  skip_event = false;
++
++  DBUG_ENTER("ReplMule::dumpEvent");
++  switch (status_) {
++    case MULE_VERIFY:
++    case MULE_VERIFY_RELAY_BEHIND:
++      if (buf[EVENT_TYPE_OFFSET] == ROTATE_EVENT &&
++          IsFakeRotation(buf, event_len)) {
++        /* Do not verify the faked rotate event */
++        if (status_ == MULE_VERIFY)
++          dump_status = SKIP_RELAY;
++        break;
++      }
++      verify_event = new char[event_len];
++      if (verify_event == NULL) {
++        sql_print_error(
++            "ReplMule::dumpEvent - insufficient memory in verification, "
++            "position(%s), event_len(%d).", 
++            llstr(mi_->master_log_pos, llbuf1), event_len);
++        dump_status = WRITE_ERROR;
++        break;
++      }
++      if (my_b_read(mule_log_->get_log_file(), (byte*) verify_event,
++                    event_len) != 0) {
++        sql_print_error(
++            "ReplMule::dumpEvent - read log error in verification, "
++            "position(%s), event_len(%d).", 
++            llstr(mi_->master_log_pos, llbuf1), event_len);
++        dump_status = WRITE_ERROR;
++        delete verify_event;
++        break;
++      }
++      verified = (memcmp(buf, verify_event, event_len) == 0);
++      delete verify_event;
++      if (!verified) {
++        sql_print_error(
++            "ReplMule::dumpEvent - event does not match at position(%s)",
++            llstr(mi_->master_log_pos, llbuf1));
++        dump_status = WRITE_ERROR;
++        break;
++      }
++      /* fall through */
++    case MULE_BEHIND:
++      dump_status = SKIP_RELAY;
++      if (status_ == MULE_BEHIND &&
++          queueEvent(buf, event_len, &skip_event) != 0) {
++        dump_status = WRITE_ERROR;
++        break;
++      }
++
++      /* Skip faked rotation event */
++      if (!skip_event)
++        mi_->master_log_pos += event_len;
++
++      if (mi_->master_log_pos == dump_position_) {
++        if (dump_position_ < file_size_) {
++          status_ = MULE_VERIFY_RELAY_BEHIND;
++        } else {
++          status_ = RELAY_MATCH_MULE;
++        }
++        sql_print_information(
++            "ReplMule::dumpEvent - new status(%d) "
++            "master_log_pos(%s), dump_pos(%s), file_size(%s)", status_,
++            llstr(mi_->master_log_pos, llbuf1), llstr(dump_position_, llbuf2),
++            llstr(file_size_, llbuf3));
++      } else if (mi_->master_log_pos == file_size_) {
++        if (dump_position_ > file_size_) {
++          status_ = MULE_BEHIND;
++        } else {
++          status_ = RELAY_MATCH_MULE;
++        }
++        sql_print_information(
++            "ReplMule::dumpEvent - new status(%d) "
++            "master_log_pos(%s), dump_pos(%s), file_size(%s)", status_,
++            llstr(mi_->master_log_pos, llbuf1), llstr(dump_position_, llbuf2),
++            llstr(file_size_, llbuf3));
++      } else if (status_ != MULE_VERIFY_RELAY_BEHIND &&
++                 mi_->master_log_pos > dump_position_) {
++        sql_print_error(
++            "ReplMule::dumpEvent - mule position(%s) does not match "
++            "relay-log position(%s).",
++            llstr(mi_->master_log_pos, llbuf1), llstr(dump_position_, llbuf2));
++        dump_status = WRITE_ERROR;
++      }
++      break;
++    case RELAY_MATCH_MULE_RUN:
++      if (buf[EVENT_TYPE_OFFSET] == FORMAT_DESCRIPTION_EVENT) {
++        sql_print_information(" RELAY_MATCH_MULE event %d", buf[EVENT_TYPE_OFFSET] );
++        /* Do not write format description record if size is the same */
++        break;
++      }
++    case RELAY_MATCH_MULE:
++      if (queueEvent(buf, event_len, &skip_event) != 0)
++        dump_status = WRITE_ERROR;
++      break;
++  }
++
++  DBUG_RETURN(dump_status);
++}
++
++int ReplMule::appendEvent(const char* buf, ulong event_len) {
++  char llbuf1[22];
++  int error;
++
++  DBUG_ENTER("ReplMule::appendEvent");
++
++  error = mule_log_->appendv(buf,event_len,0);
++  if (error != 0) {
++    sql_print_error("ReplMule::appendEvent - append error at %s(%s)",
++                    mi_->master_log_name,
++                    llstr(mi_->master_log_pos, llbuf1));
++  } else if (mule_log_->flush_log_file() != 0) {
++    sql_print_error("ReplMule::appendEvent - flush error at %s(%s)",
++                    mi_->master_log_name,
++                    llstr(mi_->master_log_pos, llbuf1));
++    error = -1;
++  } else if (mule_log_sync_period_ > 0) {
++    mule_log_event_counter_++;
++    if (mule_log_event_counter_ >= mule_log_sync_period_) {
++      mule_log_event_counter_ = 0;
++      error = my_sync(mule_log_->get_log_file()->file, MYF(MY_WME));
++      if (error != 0)
++        sql_print_error("ReplMule::appendEvent - sync error at %s(%s)",
++                        mi_->master_log_name,
++                        llstr(mi_->master_log_pos, llbuf1));
++    }
++  }
++
++  DBUG_RETURN(error);
++}
++
++int ReplMule::queueEvent(const char* buf, ulong event_len, bool *skip_event) {
++  int error = 0;
++
++  DBUG_ENTER("ReplMule::queueEvent");
++
++  *skip_event = false;
++
++  mule_log_->lock_log();
++  if (buf[EVENT_TYPE_OFFSET] == ROTATE_EVENT) {
++    Rotate_log_event rev(buf, event_len, desc_event_);
++
++    /* If this is a faked rotate event and the specified filename is
++     * the same as the current binlog filename, ignore the event.
++     */
++    if (IsFakeRotation(rev)) {
++      *skip_event = true;
++      DBUG_PRINT("info",("skipped faked rotation event"));
++    } else {
++      /* Only append real events. */
++      if (rev.when != 0)
++        error = appendEvent(buf, event_len);
++
++      /* Only rotate file when append succeeds. */
++      if (error == 0) {
++        /* Create a new file: lock both index and log. */
++        if (strlen(curr_log_filename_) == 0) {
++          /* If curr_log_filename_ is not specified, then this is the first
++           * valid rotation event to indicate the filename.
++           */
++          error = mule_log_->open(rev.new_log_ident, LOG_BIN, NULL,
++                                  SEQ_READ_APPEND, true, MAX_LOG_SIZE, 0);
++        } else {
++          mule_log_->new_file(0, rev.new_log_ident);
++        }
++
++        strmake(curr_log_filename_, rev.new_log_ident,
++                strlen(rev.new_log_ident));
++
++        DBUG_PRINT("info",("rotate file: %s", rev.new_log_ident));
++      }
++    }
++  } else {
++    error = appendEvent(buf, event_len);
++  }
++  mule_log_->unlock_log();
++
++  DBUG_RETURN(error);
++}
++
++void ReplMule::seekToPosition(my_off_t pos) {
++  DBUG_ENTER("ReplMule::seekToPosition");
++  DBUG_PRINT("enter",("seek_pos: %ld", (ulong) pos));
++  
++  my_b_seek(mule_log_->get_log_file(), pos);
++  DBUG_VOID_RETURN;
++}
++
++bool ReplMule::IsFakeRotation(const char* buf, ulong event_len) {
++  DBUG_ENTER("ReplMule::IsFakeRotation");
++
++  Rotate_log_event rev(buf, event_len, desc_event_);
++  DBUG_RETURN(IsFakeRotation(rev));
++}
++
++bool ReplMule::IsFakeRotation(const Rotate_log_event& rev) {
++  DBUG_ENTER("ReplMule::IsFakeRotation");
++  DBUG_RETURN(rev.when == 0 &&
++              rev.ident_len == strlen(curr_log_filename_) &&
++              strcmp(rev.new_log_ident, curr_log_filename_) == 0);
++}
++
++/* createReplicationMule:
++ *  Create a mule that relays master's replication binlog and
++ *  generate an exact same copy on the local filesystem.
++ * 
++ * Code flow:
++ *  last_mulelog = scan the existing mule log index to find it
++ *  if (mulelog index is not created or there is no mule log inside it)
++ *    old_mule_log <- requested dumping position
++ *    requested dumping position <- 0 in the file
++ *  else
++ *    check whether the mule log matches the requested dump
++ *      (whether the last mule log name/size matches)
++ *    if the mule log name does not match
++ *      exit with an error
++ *    if (the mule log size does not match the requested dump position)
++ *      request the dump from position 0 and read all events
++ *      verify all events with the corresponding events in mule log
++ *      if (the verification succeeds)
++ *        continue the dump
++ *      else
++ *        exit with an error
++ */
++ReplMule* ReplMule::createReplicationMule(
++    THD* thd, MASTER_INFO *mi, const char *binlog_indexname,
++    MYSQL_LOG *binlog) {
++  ReplMule *mule = NULL;
++  LOG_INFO linfo;
++  bool index_opened = false;
++
++  DBUG_ENTER("ReplMule::createReplicationMule");
++
++  /* binlog_indexname must be set to some real value. */
++  DBUG_ASSERT(binlog_indexname);
++
++  /* Lock binlog index for all binlog operations */
++  binlog->lock_index();
++  index_opened = binlog->open_index_file(binlog_indexname, NULL);
++  DBUG_PRINT("info",("open index file succeed: %d", index_opened));
++  sql_print_information("createReplicationMule");
++
++  /* Scan the existing binlog index to find the last relayed binlog */
++  if (index_opened ||
++      binlog->find_log_pos(&linfo, NullS, false) != 0) {
++    /* binlog index is not created or has no log file inside:
++     *  . old_relay_binlog <- requested dumping position
++     *  . requested dumping position <- 0 in the file
++     */
++    if (mi->master_log_pos == BIN_LOG_HEADER_SIZE) {
++      mule = new ReplMule(thd, mi, RELAY_MATCH_MULE, BIN_LOG_HEADER_SIZE,
++                          binlog_indexname, binlog, sync_mirror_binlog_period);
++    } else {
++      mule = new ReplMule(thd, mi, MULE_BEHIND, BIN_LOG_HEADER_SIZE,
++                          binlog_indexname, binlog, sync_mirror_binlog_period);
++    }
++
++    if (mule == NULL) {
++      sql_print_error("Mule malloc operation failed.");
++    }
++  } else {
++    IO_CACHE* log_file;
++    MY_STAT stat;
++    char    last_binlog_name[FN_REFLEN];
++
++    /* Find the last log file from the binlog index.
++     * Check whether the last binlog matches the requested dump for both
++     * binlog name and binlog size.
++     */
++    for (;;) {
++      strmake(last_binlog_name, linfo.log_file_name, FN_REFLEN);
++      last_binlog_name[FN_REFLEN - 1] = '\0';
++      if (binlog->find_next_log(&linfo, false))
++        break;
++    }
++    DBUG_PRINT("info",("the last binlog: %s", last_binlog_name));
++
++    /* if the binlog name does not match, exit with an error. */
++    if (strcmp(last_binlog_name+dirname_length(last_binlog_name),
++               mi->master_log_name) != 0) {
++      sql_print_error("Mule binlog(%s) does not match new relay-binlog(%s)",
++                      last_binlog_name, mi->master_log_name);
++    }  /* Open the last binlog. */
++    else if (binlog->open(last_binlog_name, LOG_BIN, NULL,
++                          SEQ_READ_APPEND, true, MAX_LOG_SIZE, 0) != 0) {
++      sql_print_error("Mule open last binlog failed: %s", last_binlog_name);
++    } else {
++      bool valid_file_size = true;
++
++      /* Get the binlog size. */
++      log_file = binlog->get_log_file();
++      if (my_fstat(log_file->file, &stat, MYF(0)) == 0) {
++        /* If the binlog size does not match the requested dump position, then
++         * request the dump from position 0 and verify all events, we need to
++         * verify events because the mule log might be used for serving during
++         * anytime.  We must be sure that they are correct.
++         */
++	sql_print_information("Binglog size %d", stat.st_size);
++        if (stat.st_size == mi->master_log_pos) {
++          mule = new ReplMule(thd, mi, RELAY_MATCH_MULE_RUN, stat.st_size,
++                              binlog_indexname, binlog,
++                              sync_mirror_binlog_period);
++        } else if (stat.st_size > BIN_LOG_HEADER_SIZE) {
++          mule = new ReplMule(thd, mi, MULE_VERIFY, stat.st_size,
++                              binlog_indexname, binlog,
++                              sync_mirror_binlog_period);
++        } else if (stat.st_size == BIN_LOG_HEADER_SIZE) {
++          mule = new ReplMule(thd, mi, MULE_BEHIND, BIN_LOG_HEADER_SIZE,
++                              binlog_indexname, binlog,
++                              sync_mirror_binlog_period);
++        } else {
++          char llbuf[22];
++          valid_file_size = false;
++          sql_print_error("Mule binlog file(%s) invalid size: %s",
++                          last_binlog_name, llstr(stat.st_size, llbuf));
++        }
++      } else {
++        valid_file_size = false;
++        sql_print_error("Mule binlog file(%s): fstat failed.",
++                        last_binlog_name);
++      }
++
++      if (valid_file_size) {
++        if (mule == NULL) {
++          sql_print_error("Mule malloc operation failed.");
++        } else if (mule->status_ == MULE_ERROR) {
++          /* If mule creation fails, indicate the error. */
++          delete mule;
++          mule = NULL;
++        }
++      }
++    }
++  }
++
++  /* Clear the mule binlog mode if there are errors. */
++  if (mule == NULL) {
++    binlog->clear_mule_mode();
++    binlog->close_index_file();
++  }
++
++  /* Unlock binlog index */
++  binlog->unlock_index();
++
++  DBUG_RETURN(mule);
++}
+diff -r 66cc9e0a6768 sql/repl_mule.h
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/sql/repl_mule.h	Thu Dec 04 21:46:15 2008 -0800
+@@ -0,0 +1,166 @@
++/*
++ Copyright (C) 2007 Google Inc.
++
++This program is free software; you can redistribute it and/or
++modify it under the terms of the GNU General Public License
++as published by the Free Software Foundation; either version 2
++of the License, or (at your option) any later version.
++
++This program is distributed in the hope that it will be useful,
++but WITHOUT ANY WARRANTY; without even the implied warranty of
++MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++GNU General Public License for more details.
++
++You should have received a copy of the GNU General Public License
++along with this program; if not, write to the Free Software
++Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
++*/
++
++#ifndef SQL_REPL_MULE_H__
++#define SQL_REPL_MULE_H__
++
++/* Replication Mule is the class that is responsible for generating
++ * an exact copy of the binlog from a master database.  We call this feature
++ * mirror binlog and it can be enabled by setting rpl_mirror_binlog.  We
++ * need to keep the same copy for the following purposes:
++ *  . The replica can serve the binlog transparently as if they are the
++ *    master database.  This can relieve master connection overhead.
++ *  . During failover, the replica can become the new master and serve
++ *    old binlogs transparently.
++ * (The Mule name comes from the popular P2P software eMule.)
++ *
++ * Internally, we call the mirrored binlog mule log.
++ */
++
++class THD;
++class Rotate_log_event;
++class Format_description_log_event;
++typedef struct st_master_info MASTER_INFO;
++
++class ReplMule {
++ public:
++  /* Because I/O thread also creates relay-binlog, instead of an exact
++   * copy of the original master's binlog, we have two resources that
++   * might get out of sync.
++   * This enum indicates the status:
++   *  MULE_BEHIND - the mule's header is behind:
++   *                (mule is activated for the first time)
++   *  RELAY_MATCH_MULE - mule matches relay-log
++   *  RELAY_MATCH_MULE_RUN - mule matches relay-log and it was not empty binlog
++   *  MULE_VERIFY - mule has more events than the relay-log and needs
++   *                verification; we can not verify based on relay-log
++   *                events because events might get changed a little;
++   *                verification starts with downloading all events in
++   *                the last binlog from the master and compare with
++   *                all events in the mule log;
++   *  MULE_VERIFY_RELAY_BEHIND - mule has more events than the relay-log
++   *                             and relay-log needs to write events
++   *  MULE_ERROR - mule detects errors in event duplicate
++   *
++   * When the mule mirrors binlogs, it writes an event into the mule log
++   * first.  Then, I/O thread writes the event into the relay log.
++   */
++  enum RelayStatus {
++    MULE_BEHIND = 1,
++    RELAY_MATCH_MULE = 2,
++    RELAY_MATCH_MULE_RUN = 7,
++    MULE_VERIFY = 3,
++    MULE_VERIFY_RELAY_BEHIND = 4,
++    MULE_ERROR = 5,
++  };
++
++  enum WriteStatus {
++    WRITE_RELAY = 1,
++    WRITE_ERROR = 2,
++    SKIP_RELAY = 3,
++  };
++
++ private:
++  const Format_description_log_event *desc_event_;
++  THD         *io_thd_;
++  MASTER_INFO *mi_;
++
++  /*
++   * I/O thread will write both mule log for mirror binlog and relay log
++   * for SQL thread.
++   * The variable indicates whether the two are in sync.
++   */
++  RelayStatus  status_;
++
++  /* The starting event writing position. */
++  my_off_t     dump_position_;
++
++  /* During the initial setup, the last mule log's file size. */
++  my_off_t     file_size_;
++
++  /* Internally, we call the mirrored binlog mule log. */
++  MYSQL_LOG   *mule_log_;
++
++  /* Sync the mule log to disk for every #N events. */
++  ulong        mule_log_sync_period_;
++  ulong        mule_log_event_counter_;
++
++  /* mule log's index filename */
++  char         mule_indexname_[FN_REFLEN];
++
++  /* the current mule log's filename */
++  char         curr_log_filename_[FN_REFLEN];
++
++  ReplMule(THD* thd, MASTER_INFO *mi, RelayStatus status,
++           my_off_t file_size, const char *binlog_indexname,
++           MYSQL_LOG *binlog, ulong sync_period);
++
++  /*
++   * Queue the event into the current mule log.  If it is a rotation
++   * event, generate a new mule log file.
++   * Indicate whether the event is skipped because it is an fake event.
++   * A fake event is generated by the master to indicate the current
++   * reading position.
++   */
++  int queueEvent(const char* buf, ulong event_len, bool *skip_event);
++
++  /* Append the event to the current mule log. */
++  int appendEvent(const char* buf, ulong event_len);
++
++  bool IsFakeRotation(const char* buf, ulong event_len);
++  bool IsFakeRotation(const Rotate_log_event& rev);
++
++  /* Seek to the specified position in the current open mule log. */
++  void seekToPosition(my_off_t pos);
++
++ public:
++
++  ~ReplMule();
++
++  /* Dump the event into mule binlog.
++   * Input:
++   *  buf       (IN) - replication event buffer
++   *  event_len (IN) - the event length
++   *
++   * Return:
++   *  . WRITE_RELAY: the relay log needs to writing the event
++   *  . WRITE_ERROR: the writing encountered errors
++   *  . SKIP_RELAY: the relay log should skip the event
++   */
++  WriteStatus writeEvent(const char* buf, ulong event_len);
++
++  /* createReplicationMule:
++   *  Create a mule that relays master's replication binlog and
++   *  generate an exact same copy on the local filesystem.
++   *
++   * Input:
++   *  thd (IN)  - replication I/O thread
++   *  mi  (IN)  - master info struct for I/O thread's progress
++   *  binlog_indexname (IN) - filename for binlog's index
++   *  binlog (IN) - replication binlog
++   *
++   * Return:
++   *  . a replication mule if success
++   *  . NULL if there are any errors
++   */
++  static ReplMule *createReplicationMule(THD* thd, MASTER_INFO *mi,
++                                         const char *binlog_indexname,
++                                         MYSQL_LOG *binlog);
++};
++
++#endif   /* SQL_REPL_MULE_H__ */
+diff -r 66cc9e0a6768 sql/set_var.cc
+--- a/sql/set_var.cc	Thu Dec 04 21:37:12 2008 -0800
++++ b/sql/set_var.cc	Thu Dec 04 21:46:15 2008 -0800
+@@ -345,6 +345,8 @@
+                                        slog_verb);
+ sys_var_long_ptr	sys_rpl_recovery_rank("rpl_recovery_rank",
+ 					      &rpl_recovery_rank);
++sys_var_bool_ptr sys_rpl_mirror_binlog_enabled("rpl_mirror_binlog_enabled",
++                                               &rpl_mirror_binlog_enabled);
+ sys_var_long_ptr	sys_query_cache_size("query_cache_size",
+ 					     &query_cache_size,
+ 					     fix_query_cache_size);
+@@ -364,6 +366,9 @@
+ sys_var_thd_ulong	sys_trans_prealloc_size("transaction_prealloc_size",
+ 						&SV::trans_prealloc_size,
+ 						0, fix_trans_mem_root);
++sys_var_long_ptr	sys_sync_mirror_binlog_period(
++                            "sync_mirror_binlog_period",
++                            &sync_mirror_binlog_period);
+ 
+ #ifdef HAVE_QUERY_CACHE
+ sys_var_long_ptr	sys_query_cache_limit("query_cache_limit",
+@@ -774,6 +779,7 @@
+   &sys_relay_log_purge,
+ #endif
+   &sys_rpl_recovery_rank,
++  &sys_rpl_mirror_binlog_enabled,
+   &sys_safe_updates,
+   &sys_secure_auth,
+   &sys_secure_file_priv,
+@@ -1113,6 +1119,8 @@
+   {"relay_log_space_limit",  (char*) &relay_log_space_limit,        SHOW_LONGLONG},
+ #endif
+   {sys_rpl_recovery_rank.name,(char*) &sys_rpl_recovery_rank,       SHOW_SYS},
++  {sys_rpl_mirror_binlog_enabled.name,
++   (char *) &sys_rpl_mirror_binlog_enabled,                         SHOW_SYS},
+   {"secure_auth",             (char*) &sys_secure_auth,             SHOW_SYS},
+   {"secure_file_priv",        (char*) &sys_secure_file_priv,        SHOW_SYS},
+ #ifdef HAVE_SMEM
+diff -r 66cc9e0a6768 sql/slave.cc
+--- a/sql/slave.cc	Thu Dec 04 21:37:12 2008 -0800
++++ b/sql/slave.cc	Thu Dec 04 21:46:15 2008 -0800
+@@ -25,6 +25,7 @@
+ #include <thr_alarm.h>
+ #include <my_dir.h>
+ #include <sql_common.h>
++#include "repl_mule.h"
+ #include <errmsg.h>
+ #include <mysys_err.h>
+ 
+@@ -3527,6 +3528,7 @@
+   RELAY_LOG_INFO *rli= &mi->rli;
+   char llbuff[22];
+   uint retry_count;
++  ReplMule *mule = NULL;
+ 
+   // needs to call my_thread_init(), otherwise we get a coredump in DBUG_ stuff
+   my_thread_init();
+@@ -3609,6 +3611,23 @@
+   if (get_master_version_and_clock(mysql, mi))
+     goto err;
+ 
++  if (rpl_mirror_binlog_enabled && !mule) {
++    if (opt_binlog_index_name == NULL) {
++      sql_print_error("\"log-bin-index\" must be set in mirror binlog.");
++      goto err;
++    }
++
++    /* Create the mule to generate the exact copy of the binlog */
++    mule = ReplMule::createReplicationMule(
++        thd, mi, opt_binlog_index_name, &mysql_bin_log);
++
++    /* If we could not create the mule, we stop the I/O thread and report
++     * an error.
++     */
++    if (mule == NULL)
++      goto err;
++  }
++
+   if (mi->rli.relay_log.description_event_for_queue->binlog_version > 1)
+   {
+     /*
+@@ -3624,6 +3643,7 @@
+   DBUG_PRINT("info",("Starting reading binary log from master"));
+   while (!io_slave_killed(thd,mi))
+   {
++    const char* event_buf;
+     bool suppress_warnings= 0;
+     thd_proc_info(thd, "Requesting binlog dump");
+     if (request_dump(mysql, mi, &suppress_warnings))
+@@ -3754,10 +3774,25 @@
+ 	goto connected;
+       } // if (event_len == packet_error)
+ 
++      event_buf = (const char*)mysql->net.read_pos + 1;
++
++      if (mule) {
++        ReplMule::WriteStatus d_status =
++          mule->writeEvent(event_buf, event_len);
++        switch (d_status) {
++          case ReplMule::WRITE_RELAY:
++            break;
++          case ReplMule::SKIP_RELAY:
++            /* Skip writing relay event; go back to read the next event */
++            continue;
++          case ReplMule::WRITE_ERROR:
++            goto err;
++        }
++      }
++
+       retry_count=0;			// ok event, reset retry counter
+       thd_proc_info(thd, "Queueing master event to the relay log");
+-      if (queue_event(mi,(const char*)mysql->net.read_pos + 1,
+-		      event_len))
++      if (queue_event(mi, event_buf, event_len))
+       {
+ 	sql_print_error("Slave I/O thread could not queue event from master");
+ 	goto err;
+@@ -3847,6 +3882,7 @@
+   change_rpl_status(RPL_ACTIVE_SLAVE,RPL_IDLE_SLAVE);
+   DBUG_ASSERT(thd->net.buff != 0);
+   net_end(&thd->net); // destructor will not free it, because net.vio is 0
++  delete mule;
+   close_thread_tables(thd, 0);
+   pthread_mutex_lock(&LOCK_thread_count);
+   THD_CHECK_SENTRY(thd);
+diff -r 66cc9e0a6768 sql/sql_class.h
+--- a/sql/sql_class.h	Thu Dec 04 21:37:12 2008 -0800
++++ b/sql/sql_class.h	Thu Dec 04 21:46:15 2008 -0800
+@@ -152,6 +152,12 @@
+ #define LOG_INFO_FATAL -7
+ #define LOG_INFO_IN_USE -8
+ 
++/* If the maximum size is equal to this value, binlog would not rotate on
++ * size limit.
++ */
++#define BINLOG_NOSWITCH_SIZE  ((ulong) -1)
++
++
+ /* bitmap to SQL_LOG::close() */
+ #define LOG_CLOSE_INDEX		1
+ #define LOG_CLOSE_TO_BE_OPENED	2
+@@ -245,6 +251,9 @@
+   bool no_auto_events;
+   friend class Log_event;
+ 
++  /* mule replication mode */
++  bool mule_binlog_;
++
+ public:
+   /*
+     These describe the log's format. This is used only for relay logs.
+@@ -317,7 +326,8 @@
+   }
+   bool open_index_file(const char *index_file_name_arg,
+                        const char *log_name);
+-  void new_file(bool need_lock);
++  int close_index_file();
++  void new_file(bool need_lock= 1, const char* log_filename= NULL);
+   bool write(THD *thd, enum enum_server_command command,
+ 	     const char *format, ...) ATTRIBUTE_FORMAT(printf, 4, 5);
+   bool write(THD *thd, const char *query, uint query_length,
+@@ -357,7 +367,27 @@
+   int get_current_log(LOG_INFO* linfo);
+   int raw_get_current_log(LOG_INFO* linfo);
+   uint next_file_id();
+-  inline bool is_open() { return log_type != LOG_CLOSED; }
++
++  /* Because mysql use is_open() to check whether replication is on,
++   * we will let the check fail during binlog mule mode.  Mule replication
++   * and normal master replication can not be on at the same time.
++   *
++   * is_log_open():  the binlog file is open for either purpose
++   *
++   * is_open():      the binlog is open for master replication.
++   * is_mule_open(): the binlog is open for mirror binlog or for
++   *                 replication mule; refer repl_mule.h for details
++   */
++  bool is_log_open() {
++    return log_type != LOG_CLOSED;
++  }
++  bool is_open() {
++    return (!mule_binlog_) && is_log_open();
++  }
++  bool is_mule_open() {
++    return (mule_binlog_) && is_log_open();
++  }
++
+   inline char* get_index_fname() { return index_file_name;}
+   inline char* get_log_fname() { return log_file_name; }
+   inline char* get_name() { return name; }
+@@ -366,8 +396,18 @@
+ 
+   inline void lock_index() { pthread_mutex_lock(&LOCK_index);}
+   inline void unlock_index() { pthread_mutex_unlock(&LOCK_index);}
++  inline void lock_log() { pthread_mutex_lock(&LOCK_log);}
++  inline void unlock_log() { pthread_mutex_unlock(&LOCK_log);}
+   inline IO_CACHE *get_index_file() { return &index_file;}
+   inline uint32 get_open_count() { return open_count; }
++  /* Look in file repl_mule.h for the definition of mule. */
++  void set_mule_mode() {
++    mule_binlog_ = 1;
++  }
++  void clear_mule_mode() {
++    mule_binlog_ = 0;
++  }
++  int flush_log_file();
+ };
+ 
+ /*
+diff -r 66cc9e0a6768 sql/sql_lex.h
+--- a/sql/sql_lex.h	Thu Dec 04 21:37:12 2008 -0800
++++ b/sql/sql_lex.h	Thu Dec 04 21:46:15 2008 -0800
+@@ -104,6 +104,7 @@
+   // TODO(mcallaghan): update status_vars in mysqld to export these
+   SQLCOM_SHOW_USER_STATS, SQLCOM_SHOW_TABLE_STATS, SQLCOM_SHOW_INDEX_STATS,
+   SQLCOM_SHOW_CLIENT_STATS,
++  SQLCOM_MAKE_MASTER,
+   /* This should be the last !!! */
+   SQLCOM_END
+ };
+@@ -171,6 +172,12 @@
+   char *ssl_key, *ssl_cert, *ssl_ca, *ssl_capath, *ssl_cipher;
+   char *relay_log_name;
+   ulong relay_log_pos;
++
++  /* the following fields are used for make master command */
++  char *log_index_name;
++  bool in_failover;
++  bool kill_session;
++  bool with_old_binlog;
+ } LEX_MASTER_INFO;
+ 
+ 
+diff -r 66cc9e0a6768 sql/sql_parse.cc
+--- a/sql/sql_parse.cc	Thu Dec 04 21:37:12 2008 -0800
++++ b/sql/sql_parse.cc	Thu Dec 04 21:46:15 2008 -0800
+@@ -402,6 +402,15 @@
+                   passwd_len ? "yes": "no",
+                   thd->main_security_ctx.master_access,
+                   (thd->db ? thd->db : "*none*")));
++
++      /* If we are in failover mode, reject all non-super user connections. */
++      if (is_in_failover() &&
++          !(thd->main_security_ctx.master_access & SUPER_ACL)) {
++        net_send_error(thd, ER_SPECIFIC_ACCESS_DENIED_ERROR,
++                       "super-user only during failover");
++	DBUG_RETURN(-1);
++      }
++
+ 
+       if (check_count)
+       {
+@@ -3470,6 +3479,22 @@
+     else
+       res = load_master_data(thd);
+     break;
++
++  case SQLCOM_MAKE_MASTER:
++  {
++    thd_proc_info(thd, "Making master");
++
++    if (check_global_access(thd, SUPER_ACL))
++      goto error;
++    res = make_master(thd, NULL, NULL, &lex->mi);
++    if (res == 0) {
++      // TODO -- wei is this OK, setting it to NULL?
++      thd_proc_info(thd, 0);
++      send_ok(thd);
++    }
++    break;
++  }
++
+ #endif /* HAVE_REPLICATION */
+ #ifdef HAVE_NDBCLUSTER_DB
+   case SQLCOM_SHOW_NDBCLUSTER_STATUS:
+diff -r 66cc9e0a6768 sql/sql_repl.cc
+--- a/sql/sql_repl.cc	Thu Dec 04 21:37:12 2008 -0800
++++ b/sql/sql_repl.cc	Thu Dec 04 21:46:15 2008 -0800
+@@ -20,11 +20,19 @@
+ #include "log_event.h"
+ #include <my_dir.h>
+ 
++extern pthread_mutex_t LOCK_failover_master;
++extern bool failover_deny_access;
++
+ int max_binlog_dump_events = 0; // unlimited
+ my_bool opt_sporadic_binlog_dump_fail = 0;
+ #ifndef DBUG_OFF
+ static int binlog_dump_count = 0;
+ #endif
++
++static int make_master_open_log(MYSQL_LOG *log, const char *opt_name,
++                                bool no_auto_events, ulong max_size);
++static int set_in_failover(bool kill_session);
++static void clear_in_failover(void);
+ 
+ /*
+     fake_rotate_event() builds a fake (=which does not exist physically in any
+@@ -255,7 +263,7 @@
+ bool purge_master_logs(THD* thd, const char* to_log)
+ {
+   char search_file_name[FN_REFLEN];
+-  if (!mysql_bin_log.is_open())
++  if (!mysql_bin_log.is_log_open())
+   {
+     send_ok(thd);
+     return FALSE;
+@@ -308,6 +316,44 @@
+   return error;
+ }
+ 
++/* Show processlist command dump the binlog state.
++ * 
++ * Input:
++ *  output_info   -  (OUT) the output proc_info
++ *  output_len    -  (IN)  output proc_info's length
++ *  thd           -  (IN)  the thread
++ *  input_msg     -  (IN)  the input proc_info
++ *  log_file_name -  (IN)  binlog file name
++ *  log_pos       -  (IN)  binlog position
++ */
++static void processlist_show_binlog_state(char *output_info,
++                                          int   output_len,
++                                          THD  *thd,
++                                          const char *input_msg,
++                                          const char *log_file_name,
++                                          my_off_t log_pos) {
++  DBUG_ENTER("processlist_show_binlog_state");
++
++  /* Point to input_msg in case "show processlist" access it before the copy
++   * is finished.
++   */
++  thd_proc_info(thd, input_msg);
++
++  if (snprintf(output_info, output_len, "%s :%s:%lld:", input_msg,
++               log_file_name + dirname_length(log_file_name),
++               log_pos) > 0) {
++    thd_proc_info(thd, output_info);
++  }
++
++  DBUG_VOID_RETURN;
++}
++
++static void repl_cleanup(ushort flags) {
++  if (flags & BINLOG_MIRROR_CLIENT) {
++    /* One less mirror binlog client. */
++    thread_safe_sub(rpl_mirror_binlog_clients, 1, &LOCK_stats);
++  }
++}
+ 
+ /*
+   TODO: Clean up loop to only have one call to send_file()
+@@ -319,6 +365,11 @@
+   LOG_INFO linfo;
+   char *log_file_name = linfo.log_file_name;
+   char search_file_name[FN_REFLEN], *name;
++
++  /* This buffer should be enough for "comments + :file_name:file_pos:". */
++  char binlog_state_msg[FN_REFLEN + 100];
++  int  binlog_state_msg_len = FN_REFLEN + 100;
++
+   IO_CACHE log;
+   File file = -1;
+   String* packet = &thd->packet;
+@@ -335,6 +386,15 @@
+ 
+   bzero((char*) &log,sizeof(log));
+ 
++  sql_print_information("Start %s binlog_dump to slave_server(%d), pos(%s, %lu)",
++                        "asynchronous",
++                        thd->server_id, log_ident, (ulong)pos);
++
++  if (flags & BINLOG_MIRROR_CLIENT) {
++    /* One more mirror binlog clients. */
++    thread_safe_increment(rpl_mirror_binlog_clients, &LOCK_stats);
++  }
++
+ #ifndef DBUG_OFF
+   if (opt_sporadic_binlog_dump_fail && (binlog_dump_count++ % 2))
+   {
+@@ -344,7 +404,7 @@
+   }
+ #endif
+ 
+-  if (!mysql_bin_log.is_open())
++  if (!mysql_bin_log.is_log_open())
+   {
+     errmsg = "Binary log is not open";
+     my_errno= ER_MASTER_FATAL_ERROR_READING_BINLOG;
+@@ -529,6 +589,12 @@
+       }
+ #endif
+ 
++      /* Update the binlog sending state. */
++      processlist_show_binlog_state(
++                binlog_state_msg, binlog_state_msg_len, thd,
++                "Send binlog events to slave",
++                log_file_name, pos);
++
+       if ((*packet)[EVENT_TYPE_OFFSET+1] == FORMAT_DESCRIPTION_EVENT)
+       {
+         binlog_can_be_corrupted= test((*packet)[FLAGS_OFFSET+1] &
+@@ -634,6 +700,13 @@
+ 	  }
+ 	  if (!thd->killed)
+ 	  {
++            /* Update the binlog sending state. */
++            processlist_show_binlog_state(
++                binlog_state_msg, binlog_state_msg_len, thd,
++                "Has sent all binlog to slave; "
++                "waiting for binlog to be updated",
++                log_file_name, pos);
++
+ 	    /* Note that the following call unlocks lock_log */
+ 	    mysql_bin_log.wait_for_update(thd, 0);
+ 	  }
+@@ -650,7 +723,12 @@
+ 
+ 	if (read_packet)
+ 	{
+-	  thd_proc_info(thd, "Sending binlog event to slave");
++	  // thd_proc_info(thd, "Sending binlog event to slave");
++          /* Update the binlog sending state. */
++          processlist_show_binlog_state(binlog_state_msg,
++                                        binlog_state_msg_len, thd,
++                                        "Sending binlog event to slave",
++                                        log_file_name, pos);
+ 	  if (my_net_write(net, (char*)packet->ptr(), packet->length()) )
+ 	  {
+ 	    errmsg = "Failed on my_net_write()";
+@@ -685,10 +763,21 @@
+     }
+     else
+     {
++      char old_log_file_name[FN_REFLEN];
+       bool loop_breaker = 0;
+       /* need this to break out of the for loop from switch */
+ 
+-      thd_proc_info(thd, "Finished reading one binlog; switching to next binlog");
++      // thd_proc_info(thd, "Finished reading one binlog; switching to next binlog");
++      /* Update the binlog sending state. */
++      processlist_show_binlog_state(
++          binlog_state_msg, binlog_state_msg_len, thd,
++          "Finished reading one binlog; switching to next binlog",
++          log_file_name, pos);
++
++      /* Keep the old fileename. */
++      strmake(old_log_file_name, log_file_name,
++              sizeof(old_log_file_name) - 1);
++
+       switch (mysql_bin_log.find_next_log(&linfo, 1)) {
+       case LOG_INFO_EOF:
+ 	loop_breaker = (flags & BINLOG_DUMP_NON_BLOCK);
+@@ -706,6 +795,16 @@
+ 
+       end_io_cache(&log);
+       (void) my_close(file, MYF(MY_WME));
++
++      /* A sanity check that we can not serve the same binlog twice because
++       * the filenames are stored in a .index file.
++       */
++      if (strcmp(old_log_file_name, log_file_name) >= 0) {
++	errmsg = "Re-serving an already served binlog file.";
++	my_errno = ER_MASTER_FATAL_ERROR_READING_BINLOG;
++	goto err;
++      }
++
+ 
+       /*
+         Call fake_rotate_event() in case the previous log (the one which
+@@ -733,6 +832,8 @@
+   end_io_cache(&log);
+   (void)my_close(file, MYF(MY_WME));
+ 
++  repl_cleanup(flags);
++
+   send_eof(thd);
+   thd_proc_info(thd, "Waiting to finalize termination");
+   pthread_mutex_lock(&LOCK_thread_count);
+@@ -743,6 +844,7 @@
+ err:
+   thd_proc_info(thd, "Waiting to finalize termination");
+   end_io_cache(&log);
++  repl_cleanup(flags);
+   /*
+     Exclude  iteration through thread list
+     this is needed for purge_logs() - it will iterate through
+@@ -1316,7 +1418,7 @@
+   Format_description_log_event *description_event= new
+     Format_description_log_event(3); /* MySQL 4.0 by default */
+ 
+-  if (mysql_bin_log.is_open())
++  if (mysql_bin_log.is_log_open())
+   {
+     LEX_MASTER_INFO *lex_mi= &thd->lex->mi;
+     SELECT_LEX_UNIT *unit= &thd->lex->unit;
+@@ -1456,7 +1558,7 @@
+     DBUG_RETURN(TRUE);
+   protocol->prepare_for_resend();
+ 
+-  if (mysql_bin_log.is_open())
++  if (mysql_bin_log.is_log_open())
+   {
+     LOG_INFO li;
+     mysql_bin_log.get_current_log(&li);
+@@ -1497,7 +1599,7 @@
+   Protocol *protocol= thd->protocol;
+   DBUG_ENTER("show_binlogs");
+ 
+-  if (!mysql_bin_log.is_open())
++  if (!mysql_bin_log.is_log_open())
+   {
+     my_message(ER_NO_BINARY_LOGGING, ER(ER_NO_BINARY_LOGGING), MYF(0));
+     return 1;
+@@ -1606,6 +1708,235 @@
+   DBUG_RETURN(0);
+ }
+ 
++
++/* make_master: Make the current database a primary and starts the
++ * binlog logging for all updates.
++ * 
++ * The function handles the following sql commands:
++ * . MAKE MASTER MASTER_LOG_FILE='replication_log', MASTER_SERVER_ID=1,
++ *               [WITH BINLOG];
++ * . MAKE MASTER MASTER_LOG_FILE='replication_log', MASTER_SERVER_ID=1,
++ *               INDEX='replication_log.index' [WITH BINLOG];
++ * . MAKE MASTER REVOKE SESSION;
++ * . MAKE MASTER REVOKE SESSION WITH KILL;
++ * . MAKE MASTER GRANT SESSION;
++ *
++ * Args:
++ *   thd              - the current thread
++ *   binlog_name      - binlog's filename
++ *   binlog_indexname - binlog index's filename
++ *   mi               - master info struct containing binlog name
++ *                      (set when we enable master during runtime)
++ * 
++ * Return:
++ *   0   : success
++ *   -1  : failure
++ */
++int make_master(THD* thd,
++                const char *binlog_name,
++                const char *binlog_indexname,
++                const LEX_MASTER_INFO* mi) {
++  int error = 0;
++
++  DBUG_ENTER("make_master");
++  /* In two mode, we enable the binlog:
++   *  . !mi - LEX is not provided; this is called from startup time
++   *  . mi->log_file_name - binlog is specified in the command
++   */
++  if (!mi || mi->log_file_name) {
++    /* Get the mutex */
++    VOID(pthread_mutex_lock(&LOCK_failover_master));
++
++    /* If the binlog is already opened, we issue an error.  We reuse one
++     * existing error, which might not be fully accurate.
++     */
++    if (mysql_bin_log.is_log_open()) {
++      my_error(ER_MASTER_INFO, MYF(0));
++      sql_print_error("Replication master log is already open: cannot "
++                      "make another master!");
++      error = -1;
++    } else {
++      if (!mi) {
++        /* This opening happens at mysql startup time. */
++        if (make_master_open_log(&mysql_bin_log, binlog_name,
++                                 0, max_binlog_size) != 0) {
++          error = -1;
++        }
++      } else {
++        /* This opening happens during mysql runtime, which is mostly
++         * requested to do failover.
++         */
++
++        error = -1;
++        if (!is_in_failover()) {
++          sql_print_error(
++              "\"make master\" runs only in failover mode. "
++              "Please run \"make master revoke session (with kill)\"");
++        } else if (strlen(mi->log_file_name) == 0) {
++          sql_print_error("Master log filename is not specified correctly.");
++        } else if (!mi->server_id || mi->server_id == MASTER_INFO_SERVER_ID) {
++          sql_print_error("\"make master\": invalid server_id(%d)",
++                          mi->server_id);
++        } else {
++          /* Open the new log files and delete all existing ones to avoid
++           * conflicts.
++           */
++          uint32 old_server_id = server_id;
++          char *binlog_name = NULL;
++
++          /* Set the global master server id.
++           * We would not change server id for all connection threads.
++           * All non-super sessions should be blocked by revoke sessions.
++           * Super-user sessions are responsible for their own operations.
++           */
++          server_id = mi->server_id;
++          thd->server_id = mi->server_id;
++
++          if (!(binlog_name = my_strdup(mi->log_file_name, MYF(0))) ||
++              make_master_open_index(&binlog_name, mi->log_index_name) != 0 ||
++              make_master_open_log(&mysql_bin_log, binlog_name,
++                                   0, max_binlog_size) != 0) {
++            sql_print_error("Open master logfile failed.");
++            thd->server_id = old_server_id;
++            server_id = old_server_id;
++          } else if (!mi->with_old_binlog && 
++                     mysql_bin_log.reset_logs(thd) != 0) {
++            sql_print_error("Cleanup existing master logfiles failed.");
++            thd->server_id = old_server_id;
++            server_id = old_server_id;
++          } else {
++            error = 0;
++          }
++        }
++        if (error == -1)
++          my_error(ER_MASTER_INFO, MYF(0));
++      }
++    }
++
++    if (error == 0) {
++      /* indicates that binlog is enabled now */
++      using_update_log = 1;
++    } else if (mysql_bin_log.is_open()) {
++      mysql_bin_log.close(LOG_CLOSE_INDEX);
++    }
++
++    /* Release the mutex */
++    VOID(pthread_mutex_unlock(&LOCK_failover_master));
++  } else {
++    /* The following actions are related to session management during
++     * failover operation.  We do not want some sessions come in
++     * during failover and make updates.
++     * This is invoked for command: MAKE MASTER GRANT/REVOKE SESSION;
++     */
++    if (mi->in_failover) {
++      set_in_failover(mi->kill_session);
++    } else {
++      clear_in_failover();
++    }
++  }
++
++  DBUG_RETURN(error);
++}
++
++static int make_master_open_log(MYSQL_LOG *log,
++                                const char *opt_name,
++                                bool no_auto_events,
++                                ulong max_size) {
++  char tmp[FN_REFLEN];
++
++  // get rid of extension
++  char *p = fn_ext(opt_name);
++  uint length=(uint) (p-opt_name);
++  strmake(tmp,opt_name,min(length,FN_REFLEN));
++  opt_name=tmp;
++
++  return log->open(opt_name, LOG_BIN, NULL, WRITE_CACHE, 0,
++                   max_size, 0);
++}
++
++int make_master_open_index(char **binlog_name,
++                           const char *binlog_indexname) {
++  char buf[FN_REFLEN];
++  const char *ln;
++  DBUG_ENTER("make_master_open_index");
++
++  ln= mysql_bin_log.generate_name(*binlog_name, "-bin", 1, buf);
++  if (!(*binlog_name) && !binlog_indexname) {
++    /*
++      User didn't give us info to name the binlog index file.
++      Picking `hostname`-bin.index like did in 4.x, causes replication to
++      fail if the hostname is changed later. So, we would like to instead
++      require a name. But as we don't want to break many existing setups, we
++        only give warning, not error.
++    */
++    sql_print_warning("No argument was provided to --log-bin, and "
++                      "--log-bin-index was not used; so replication "
++                      "may break when this MySQL server acts as a "
++                      "master and has his hostname changed!! Please "
++                      "use '--log-bin=%s' to avoid this problem.", ln);
++  }
++  if (ln == buf) {
++    my_free(*binlog_name, MYF(MY_ALLOW_ZERO_PTR));
++    *binlog_name = my_strdup(buf, MYF(0));
++  }
++  if (mysql_bin_log.open_index_file(binlog_indexname, ln) != 0) {
++    DBUG_RETURN(-1);
++  }
++
++  /*
++    Used to specify which type of lock we need to use for queries of type
++    INSERT ... SELECT. This will change when we have row level logging.
++  */
++  using_update_log=1;
++
++  DBUG_RETURN(0);
++}
++
++/* Set the status indicating that we are in failover and deny all non-super
++ * user access.
++ *
++ * Args:
++ *  kill_session  - kill all non-super sessions if specified
++ *
++ * Return:
++ *  0  - success
++ *  -1 - failure (caused by not killing all sessions)
++ */
++static int set_in_failover(bool kill_session) {
++  failover_deny_access = 1;
++
++  if (kill_session) {
++    /* If kill session option is specified, we need to kill all non-super
++     * user sessions.
++     */
++    THD *kill_thd;
++
++    uint error=ER_NO_SUCH_THREAD;
++    pthread_mutex_lock(&LOCK_thread_count); // For unlink from list
++    I_List_iterator<THD> it(threads);
++    while ((kill_thd=it++)) {
++      if (!(kill_thd->main_security_ctx.master_access & SUPER_ACL)) {
++        pthread_mutex_lock(&kill_thd->LOCK_delete);    // Lock from delete
++
++        /* ask the thread to die */
++        kill_thd->awake(THD::KILL_CONNECTION);
++        pthread_mutex_unlock(&kill_thd->LOCK_delete);
++      }
++    }
++    pthread_mutex_unlock(&LOCK_thread_count);
++  }
++  return 0;
++}
++
++static void clear_in_failover(void) {
++  failover_deny_access = 0;
++}
++
++bool is_in_failover(void) {
++  return failover_deny_access;
++}
++
++
+ #endif /* HAVE_REPLICATION */
+ 
+ 
+diff -r 66cc9e0a6768 sql/sql_repl.h
+--- a/sql/sql_repl.h	Thu Dec 04 21:37:12 2008 -0800
++++ b/sql/sql_repl.h	Thu Dec 04 21:46:15 2008 -0800
+@@ -38,6 +38,10 @@
+ int start_slave(THD* thd, MASTER_INFO* mi, bool net_report);
+ int stop_slave(THD* thd, MASTER_INFO* mi, bool net_report);
+ bool change_master(THD* thd, MASTER_INFO* mi);
++int make_master(THD* thd, const char *binlog_name,
++                const char *binlog_indexname, const LEX_MASTER_INFO* mi);
++int make_master_open_index(char **binlog_name, const char *binlog_indexname);
++bool is_in_failover(void);
+ bool mysql_show_binlog_events(THD* thd);
+ int cmp_master_pos(const char* log_file_name1, ulonglong log_pos1,
+ 		   const char* log_file_name2, ulonglong log_pos2);
+diff -r 66cc9e0a6768 sql/sql_yacc.yy
+--- a/sql/sql_yacc.yy	Thu Dec 04 21:37:12 2008 -0800
++++ b/sql/sql_yacc.yy	Thu Dec 04 21:46:15 2008 -0800
+@@ -735,6 +735,7 @@
+ %token  LOOP_SYM
+ %token  LOW_PRIORITY
+ %token  LT
++%token  MAKE_SYM
+ %token  MAKE_SET_SYM
+ %token  MASTER_CONNECT_RETRY_SYM
+ %token  MASTER_HOST_SYM
+@@ -1167,7 +1168,7 @@
+ 	query verb_clause create change select do drop insert replace insert2
+ 	insert_values update delete truncate rename
+ 	show describe load alter optimize keycache preload flush
+-	reset purge begin commit rollback savepoint release
++	make reset purge begin commit rollback savepoint release
+ 	slave master_def master_defs master_file_def slave_until_opts
+ 	repair restore backup analyze check start checksum
+ 	field_list field_list_item field_spec kill column_def key_def
+@@ -1301,6 +1302,7 @@
+ 	| kill
+ 	| load
+ 	| lock
++        | make
+ 	| optimize
+         | keycache
+ 	| preload
+@@ -1428,6 +1430,56 @@
+        master_defs
+ 	{}
+        ;
++
++/* make master */
++make:
++       MAKE_SYM MASTER_SYM 
++       {
++	  LEX *lex = Lex;
++	  lex->sql_command = SQLCOM_MAKE_MASTER;
++	  bzero((char*) &lex->mi, sizeof(lex->mi));
++       }
++       make_master_defs
++       {
++       }
++       ;
++
++make_master_defs:
++       MASTER_LOG_FILE_SYM EQ TEXT_STRING ',' MASTER_SERVER_ID_SYM EQ ulong_num
++       {
++	 Lex->mi.log_file_name = $3.str;
++         Lex->mi.server_id = $7;
++       }
++       make_master_with_defs {}
++       | MASTER_LOG_FILE_SYM EQ TEXT_STRING ',' MASTER_SERVER_ID_SYM EQ ulong_num ',' INDEX_SYM EQ TEXT_STRING
++       {
++	 Lex->mi.log_file_name = $3.str;
++         Lex->mi.server_id = $7;
++	 Lex->mi.log_index_name = $11.str;
++       }
++       make_master_with_defs {}
++       | GRANT SESSION_SYM
++       {
++	 Lex->mi.in_failover = 0;
++       }
++       | REVOKE SESSION_SYM
++       {
++	 Lex->mi.in_failover = 1;
++       }
++       | REVOKE SESSION_SYM WITH KILL_SYM
++       {
++	 Lex->mi.in_failover = 1;
++	 Lex->mi.kill_session = 1;
++       }
++       ;
++
++make_master_with_defs:
++       /* empty */ {}
++       | WITH BINLOG_SYM 
++       {
++         /* All old binlogs will be kept after "make master" command. */
++         Lex->mi.with_old_binlog = 1;
++       }
+ 
+ master_defs:
+        master_def
+@@ -8396,6 +8448,7 @@
+ 	| HANDLER_SYM		{}
+ 	| HELP_SYM		{}
+ 	| LANGUAGE_SYM          {}
++	| MAKE_SYM		{}
+ 	| NO_SYM		{}
+ 	| OPEN_SYM		{}
+         | PREPARE_SYM           {}
diff --git a/1007_mysqld_safe_syslog-percona-5.0.75-b12.patch b/1007_mysqld_safe_syslog-percona-5.0.75-b12.patch
new file mode 100644
index 0000000..a493a29
--- /dev/null
+++ b/1007_mysqld_safe_syslog-percona-5.0.75-b12.patch
@@ -0,0 +1,127 @@
+diff -r d91edeb58b50 patch_info/mysqld_safe_syslog.info
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/patch_info/mysqld_safe_syslog.info	Mon Sep 01 21:58:00 2008 -0700
+@@ -0,0 +1,6 @@
++File=mysqld_safe_syslog.patch
++Name=Patch allows redirect output of error.log to syslog-ng
++Version=1.0
++Author=Percona <info@percona.com>
++License=GPL
++Comment=Ported from Debian
+diff -r d91edeb58b50 scripts/mysqld_safe.sh
+--- a/scripts/mysqld_safe.sh	Mon Sep 01 21:57:21 2008 -0700
++++ b/scripts/mysqld_safe.sh	Mon Sep 01 21:58:00 2008 -0700
+@@ -10,12 +10,16 @@
+ # mysql.server works by first doing a cd to the base directory and from there
+ # executing mysqld_safe
+ 
+-KILL_MYSQLD=1;
+ MYSQLD=
+ 
+ trap '' 1 2 3 15			# we shouldn't let anyone kill us
+ 
+ umask 007
++
++KILL_MYSQLD=1;
++
++# This command can be used as pipe to syslog. With "-s" it also logs to stderr.
++ERR_LOGGER="logger -p daemon.err -t mysqld_safe -i"
+ 
+ defaults=
+ case "$1" in
+@@ -177,7 +181,6 @@
+ 
+ # these rely on $DATADIR by default, so we'll set them later on
+ pid_file=
+-err_log=
+ 
+ # Get first arguments from the my.cnf file, groups [mysqld] and [mysqld_safe]
+ # and then merge with the command line arguments
+@@ -245,7 +248,6 @@
+     * )  pid_file="$DATADIR/$pid_file" ;;
+   esac
+ fi
+-test -z "$err_log"  && err_log=$DATADIR/`@HOSTNAME@`.err
+ 
+ if test -n "$mysql_unix_port"
+ then
+@@ -315,8 +317,6 @@
+   then
+     USER_OPTION="--user=$user"
+   fi
+-  # If we are root, change the err log to the right user.
+-  touch $err_log; chown $user $err_log
+   if test -n "$open_files"
+   then
+     ulimit -n $open_files
+@@ -341,18 +341,16 @@
+   then
+     if @FIND_PROC@
+     then    # The pid contains a mysqld process
+-      echo "A mysqld process already exists"
+-      echo "A mysqld process already exists at " `date` >> $err_log
++      echo "A mysqld process already exists" | $ERR_LOGGER -s
+       exit 1
+     fi
+   fi
+   rm -f $pid_file
+   if test -f $pid_file
+   then
+-    echo "Fatal error: Can't remove the pid file: $pid_file"
+-    echo "Fatal error: Can't remove the pid file: $pid_file at " `date` >> $err_log
+-    echo "Please remove it manually and start $0 again"
+-    echo "mysqld daemon not started"
++    echo "Fatal error: Can't remove the pid file: $pid_file" | $ERR_LOGGER -s
++    echo "Please remove it manually and start $0 again" | $ERR_LOGGER -s
++    echo "mysqld daemon not started" | $ERR_LOGGER -s
+     exit 1
+   fi
+ fi
+@@ -377,15 +375,15 @@
+ #  ulimit -n 256 > /dev/null 2>&1		# Fix for BSD and FreeBSD systems
+ #fi
+ 
+-echo "`date +'%y%m%d %H:%M:%S  mysqld started'`" >> $err_log
++echo "started" | $ERR_LOGGER -s
+ while true
+ do
+   rm -f $safe_mysql_unix_port $pid_file	# Some extra safety
+   if test -z "$args"
+   then
+-    $NOHUP_NICENESS $ledir/$MYSQLD $defaults --basedir=$MY_BASEDIR_VERSION --datadir=$DATADIR $USER_OPTION --pid-file=$pid_file @MYSQLD_DEFAULT_SWITCHES@ >> $err_log 2>&1
++    $NOHUP_NICENESS $ledir/$MYSQLD $defaults --basedir=$MY_BASEDIR_VERSION --datadir=$DATADIR $USER_OPTION --pid-file=$pid_file @MYSQLD_DEFAULT_SWITCHES@ 2>&1 | $ERR_LOGGER -t mysqld
+   else
+-    eval "$NOHUP_NICENESS $ledir/$MYSQLD $defaults --basedir=$MY_BASEDIR_VERSION --datadir=$DATADIR $USER_OPTION --pid-file=$pid_file @MYSQLD_DEFAULT_SWITCHES@ $args >> $err_log 2>&1"
++    eval "$NOHUP_NICENESS $ledir/$MYSQLD $defaults --basedir=$MY_BASEDIR_VERSION --datadir=$DATADIR $USER_OPTION --pid-file=$pid_file @MYSQLD_DEFAULT_SWITCHES@ $args 2>&1 | $ERR_LOGGER -t mysqld"
+   fi
+   if test ! -f $pid_file		# This is removed if normal shutdown
+   then
+@@ -402,7 +400,7 @@
+     # kill -9 is used or the process won't react on the kill.
+     numofproces=`ps xaww | grep -v "grep" | grep "$ledir/$MYSQLD\>" | grep -c "pid-file=$pid_file"`
+ 
+-    echo -e "\nNumber of processes running now: $numofproces" | tee -a $err_log
++    echo -e "\nNumber of processes running now: $numofproces" | $ERR_LOGGER -s
+     I=1
+     while test "$I" -le "$numofproces"
+     do 
+@@ -415,16 +413,14 @@
+       #    echo "TEST $I - $T **"
+       if kill -9 $T
+       then
+-        echo "$MYSQLD process hanging, pid $T - killed" | tee -a $err_log
++        echo "$MYSQLD process hanging, pid $T - killed" | $ERR_LOGGER -s
+       else 
+         break
+       fi
+       I=`expr $I + 1`
+     done
+   fi
+-  echo "`date +'%y%m%d %H:%M:%S'`  mysqld restarted" | tee -a $err_log
++  echo "restarted" | $ERR_LOGGER -s
+ done
+ 
+-echo "`date +'%y%m%d %H:%M:%S'`  mysqld ended" | tee -a $err_log
+-echo "" | tee -a $err_log
+-
++echo "ended" | $ERR_LOGGER -s
diff --git a/1008_innodb_locks_held-percona-5.0.75-b12.patch b/1008_innodb_locks_held-percona-5.0.75-b12.patch
new file mode 100644
index 0000000..18c99f4
--- /dev/null
+++ b/1008_innodb_locks_held-percona-5.0.75-b12.patch
@@ -0,0 +1,219 @@
+diff -r ae6708ab17e5 innobase/include/srv0srv.h
+--- a/innobase/include/srv0srv.h	Mon Dec 22 00:32:07 2008 -0800
++++ b/innobase/include/srv0srv.h	Mon Dec 22 00:32:58 2008 -0800
+@@ -80,6 +80,8 @@
+ extern ulint	srv_log_file_size;
+ extern ulint	srv_log_buffer_size;
+ extern ulong	srv_flush_log_at_trx_commit;
++extern ulong	srv_show_locks_held;
++extern ulong	srv_show_verbose_locks;
+ 
+ extern byte	srv_latin1_ordering[256];/* The sort order table of the latin1
+ 					character set */
+diff -r ae6708ab17e5 innobase/lock/lock0lock.c
+--- a/innobase/lock/lock0lock.c	Mon Dec 22 00:32:07 2008 -0800
++++ b/innobase/lock/lock0lock.c	Mon Dec 22 00:32:58 2008 -0800
+@@ -4181,6 +4181,7 @@
+ #endif /* UNIV_SYNC_DEBUG */
+ 	}
+ 
++	if ( srv_show_verbose_locks ) {
+ 	for (i = 0; i < lock_rec_get_n_bits(lock); i++) {
+ 
+ 		if (lock_rec_get_nth_bit(lock, i)) {
+@@ -4198,6 +4199,7 @@
+ 			putc('\n', file);
+ 		}
+ 	}
++	} /* srv_show_verbose_locks */
+ 
+ 	mtr_commit(&mtr);
+ 	if (UNIV_LIKELY_NULL(heap)) {
+@@ -4369,7 +4371,7 @@
+ 		}
+ 	}
+ 
+-	if (!srv_print_innodb_lock_monitor) {
++	if (!srv_print_innodb_lock_monitor && !srv_show_locks_held) {
+ 	  	nth_trx++;
+ 	  	goto loop;
+ 	}
+@@ -4426,9 +4428,9 @@
+ 
+ 	nth_lock++;
+ 
+-	if (nth_lock >= 10) {
++	if (nth_lock >= srv_show_locks_held) {
+ 		fputs(
+-		"10 LOCKS PRINTED FOR THIS TRX: SUPPRESSING FURTHER PRINTS\n",
++		"TOO MANY LOCKS PRINTED FOR THIS TRX: SUPPRESSING FURTHER PRINTS\n",
+ 			file);
+ 	
+ 		nth_trx++;
+diff -r ae6708ab17e5 innobase/srv/srv0srv.c
+--- a/innobase/srv/srv0srv.c	Mon Dec 22 00:32:07 2008 -0800
++++ b/innobase/srv/srv0srv.c	Mon Dec 22 00:32:58 2008 -0800
+@@ -116,6 +116,8 @@
+ ulint	srv_log_file_size	= ULINT_MAX;	/* size in database pages */ 
+ ulint	srv_log_buffer_size	= ULINT_MAX;	/* size in database pages */ 
+ ulong	srv_flush_log_at_trx_commit = 1;
++ulint	srv_show_locks_held	= 10;
++ulint	srv_show_verbose_locks	= 0;
+ 
+ byte	srv_latin1_ordering[256]	/* The sort order table of the latin1
+ 					character set. The following table is
+@@ -1694,24 +1696,6 @@
+ 
+ 	mutex_exit(&dict_foreign_err_mutex);
+ 
+-	lock_print_info_summary(file);
+-	if (trx_start) {
+-		long	t = ftell(file);
+-		if (t < 0) {
+-			*trx_start = ULINT_UNDEFINED;
+-		} else {
+-			*trx_start = (ulint) t;
+-		}
+-	}
+-	lock_print_info_all_transactions(file);
+-	if (trx_end) {
+-		long	t = ftell(file);
+-		if (t < 0) {
+-			*trx_end = ULINT_UNDEFINED;
+-		} else {
+-			*trx_end = (ulint) t;
+-		}
+-	}
+ 	fputs("--------\n"
+ 		"FILE I/O\n"
+ 		"--------\n", file);
+@@ -1805,6 +1789,25 @@
+ 	srv_n_rows_deleted_old = srv_n_rows_deleted;
+ 	srv_n_rows_read_old = srv_n_rows_read;
+ 
++	lock_print_info_summary(file);
++	if (trx_start) {
++		long	t = ftell(file);
++		if (t < 0) {
++			*trx_start = ULINT_UNDEFINED;
++		} else {
++			*trx_start = (ulint) t;
++		}
++	}
++	lock_print_info_all_transactions(file);
++	if (trx_end) {
++		long	t = ftell(file);
++		if (t < 0) {
++			*trx_end = ULINT_UNDEFINED;
++		} else {
++			*trx_end = (ulint) t;
++		}
++	}
++
+   fputs("----------------------------\n"
+ 		       "END OF INNODB MONITOR OUTPUT\n"
+ 		"============================\n", file);
+diff -r ae6708ab17e5 libmysqld/set_var.cc
+--- a/libmysqld/set_var.cc	Mon Dec 22 00:32:07 2008 -0800
++++ b/libmysqld/set_var.cc	Mon Dec 22 00:32:58 2008 -0800
+@@ -821,6 +821,8 @@
+   &sys_innodb_thread_concurrency,
+   &sys_innodb_commit_concurrency,
+   &sys_innodb_flush_log_at_trx_commit,
++  &sys_innodb_show_locks_held,
++  &sys_innodb_show_verbose_locks,
+ #endif
+   &sys_trust_routine_creators,
+   &sys_trust_function_creators,
+@@ -936,6 +938,8 @@
+   {"innodb_file_io_threads", (char*) &innobase_file_io_threads, SHOW_LONG },
+   {"innodb_file_per_table", (char*) &innobase_file_per_table, SHOW_MY_BOOL},
+   {sys_innodb_flush_log_at_trx_commit.name, (char*) &sys_innodb_flush_log_at_trx_commit, SHOW_SYS},
++  {sys_innodb_show_locks_held.name, (char*) &sys_innodb_show_locks_held, SHOW_SYS },
++  {sys_innodb_show_verbose_locks.name, (char*) &sys_innodb_show_verbose_locks, SHOW_SYS },
+   {"innodb_flush_method",    (char*) &innobase_unix_file_flush_method, SHOW_CHAR_PTR},
+   {"innodb_force_recovery", (char*) &innobase_force_recovery, SHOW_LONG },
+   {"innodb_lock_wait_timeout", (char*) &innobase_lock_wait_timeout, SHOW_LONG },
+diff -r ae6708ab17e5 patch_info/innodb_locks_held.info
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/patch_info/innodb_locks_held.info	Mon Dec 22 00:32:58 2008 -0800
+@@ -0,0 +1,6 @@
++File=innodb_locks_held.patch
++Name=Add locks held, remove locked records in SHOW INNODB STATUS
++Version=1.0
++Author=Baron Schwartz <baron@xaprb.com>
++License=GPL
++Comment=Bug #29126 fix
+diff -r ae6708ab17e5 sql/ha_innodb.h
+--- a/sql/ha_innodb.h	Mon Dec 22 00:32:07 2008 -0800
++++ b/sql/ha_innodb.h	Mon Dec 22 00:32:58 2008 -0800
+@@ -238,6 +238,8 @@
+ extern ulong srv_io_capacity;
+ extern ulong srv_read_ahead;
+ extern ulong srv_adaptive_checkpoint;
++extern ulong srv_show_locks_held;
++extern ulong srv_show_verbose_locks;
+ }
+ 
+ bool innobase_init(void);
+diff -r ae6708ab17e5 sql/mysqld.cc
+--- a/sql/mysqld.cc	Mon Dec 22 00:32:07 2008 -0800
++++ b/sql/mysqld.cc	Mon Dec 22 00:32:58 2008 -0800
+@@ -4969,6 +4969,8 @@
+   OPT_INNODB_MAX_PURGE_LAG,
+   OPT_INNODB_FILE_IO_THREADS,
+   OPT_INNODB_LOCK_WAIT_TIMEOUT,
++  OPT_INNODB_SHOW_LOCKS_HELD,
++  OPT_INNODB_SHOW_VERBOSE_LOCKS,
+   OPT_INNODB_THREAD_CONCURRENCY,
+   OPT_INNODB_COMMIT_CONCURRENCY,
+   OPT_INNODB_FORCE_RECOVERY,
+@@ -5308,6 +5310,14 @@
+    (gptr*) &srv_flush_log_at_trx_commit,
+    (gptr*) &srv_flush_log_at_trx_commit,
+    0, GET_ULONG, OPT_ARG,  1, 0, 2, 0, 0, 0},
++  {"innodb_show_locks_held", OPT_INNODB_SHOW_LOCKS_HELD,
++   "Number of locks held to print for each InnoDB transaction in SHOW INNODB STATUS.",
++   (gptr*) &srv_show_locks_held, (gptr*) &srv_show_locks_held,
++   0, GET_LONG, OPT_ARG, 10, 0, 1000, 0, 1, 0},
++  {"innodb_show_verbose_locks", OPT_INNODB_SHOW_VERBOSE_LOCKS,
++   "Whether to show records locked in SHOW INNODB STATUS.",
++   (gptr*) &srv_show_verbose_locks, (gptr*) &srv_show_verbose_locks,
++   0, GET_LONG, OPT_ARG, 0, 0, 1, 0, 1, 0},
+   {"innodb_flush_method", OPT_INNODB_FLUSH_METHOD,
+    "With which method to flush data.", (gptr*) &innobase_unix_file_flush_method,
+    (gptr*) &innobase_unix_file_flush_method, 0, GET_STR, REQUIRED_ARG, 0, 0, 0,
+diff -r ae6708ab17e5 sql/set_var.cc
+--- a/sql/set_var.cc	Mon Dec 22 00:32:07 2008 -0800
++++ b/sql/set_var.cc	Mon Dec 22 00:32:58 2008 -0800
+@@ -495,6 +495,12 @@
+                                               &srv_read_ahead);
+ sys_var_long_ptr	sys_innodb_adaptive_checkpoint("innodb_adaptive_checkpoint",
+                                                       &srv_adaptive_checkpoint);
++sys_var_long_ptr  sys_innodb_show_locks_held(
++                                        "innodb_show_locks_held",
++                                        &srv_show_locks_held);
++sys_var_long_ptr  sys_innodb_show_verbose_locks(
++                                        "innodb_show_verbose_locks",
++                                        &srv_show_verbose_locks);
+ sys_var_const_os_str_ptr sys_innodb_data_file_path("innodb_data_file_path", 
+                                                &innobase_data_file_path);
+ sys_var_const_os_str_ptr sys_innodb_data_home_dir("innodb_data_home_dir", 
+@@ -862,6 +868,8 @@
+   &sys_innodb_io_capacity,
+   &sys_innodb_read_ahead,
+   &sys_innodb_adaptive_checkpoint,
++  &sys_innodb_show_locks_held,
++  &sys_innodb_show_verbose_locks,
+ #endif
+   &sys_trust_routine_creators,
+   &sys_trust_function_creators,
+@@ -977,6 +985,8 @@
+   {"innodb_file_io_threads", (char*) &innobase_file_io_threads, SHOW_LONG },
+   {"innodb_file_per_table", (char*) &innobase_file_per_table, SHOW_MY_BOOL},
+   {sys_innodb_flush_log_at_trx_commit.name, (char*) &sys_innodb_flush_log_at_trx_commit, SHOW_SYS},
++  {sys_innodb_show_locks_held.name, (char*) &sys_innodb_show_locks_held, SHOW_SYS },
++  {sys_innodb_show_verbose_locks.name, (char*) &sys_innodb_show_verbose_locks, SHOW_SYS },
+   {"innodb_flush_method",    (char*) &innobase_unix_file_flush_method, SHOW_CHAR_PTR},
+   {"innodb_force_recovery", (char*) &innobase_force_recovery, SHOW_LONG },
+   {"innodb_lock_wait_timeout", (char*) &innobase_lock_wait_timeout, SHOW_LONG },
diff --git a/1009_innodb_show_bp-percona-5.0.75-b12.patch b/1009_innodb_show_bp-percona-5.0.75-b12.patch
new file mode 100644
index 0000000..a56ae9a
--- /dev/null
+++ b/1009_innodb_show_bp-percona-5.0.75-b12.patch
@@ -0,0 +1,447 @@
+diff -r fe944d2c6e1f innobase/btr/btr0btr.c
+--- a/innobase/btr/btr0btr.c	Mon Nov 10 19:47:27 2008 -0800
++++ b/innobase/btr/btr0btr.c	Mon Nov 10 19:48:24 2008 -0800
+@@ -2989,3 +2989,11 @@
+ 
+ 	return(TRUE);
+ }
++
++dulint
++btr_page_get_index_id_noninline(
++/*============*/
++        page_t* page)  /* in: index page */
++{
++  return btr_page_get_index_id(page);
++}
+diff -r fe944d2c6e1f innobase/buf/buf0buf.c
+--- a/innobase/buf/buf0buf.c	Mon Nov 10 19:47:27 2008 -0800
++++ b/innobase/buf/buf0buf.c	Mon Nov 10 19:48:24 2008 -0800
+@@ -2629,3 +2629,13 @@
+ 	buf_block_print(block);
+ }
+ 
++buf_block_t*
++buf_pool_get_nth_block_no_inline(
++/*===================*/
++                                /* out: pointer to block */
++        buf_pool_t*     buf_pool,/* in: buf_pool */
++        ulint           i)      /* in: index of the block */{
++
++return buf_pool_get_nth_block(buf_pool, i);
++
++}
+diff -r fe944d2c6e1f innobase/include/btr0btr.h
+--- a/innobase/include/btr0btr.h	Mon Nov 10 19:47:27 2008 -0800
++++ b/innobase/include/btr0btr.h	Mon Nov 10 19:48:24 2008 -0800
+@@ -69,6 +69,12 @@
+ UNIV_INLINE
+ dulint
+ btr_page_get_index_id(
++/*==================*/
++				/* out: index id */
++	page_t*		page);	/* in: index page */
++
++dulint
++btr_page_get_index_id_noninline(
+ /*==================*/
+ 				/* out: index id */
+ 	page_t*		page);	/* in: index page */
+diff -r fe944d2c6e1f innobase/include/buf0buf.h
+--- a/innobase/include/buf0buf.h	Mon Nov 10 19:47:27 2008 -0800
++++ b/innobase/include/buf0buf.h	Mon Nov 10 19:48:24 2008 -0800
+@@ -703,6 +703,8 @@
+ buf_get_free_list_len(void);
+ /*=======================*/
+ 
++void buf_pool_dump(void);
++buf_block_t* buf_pool_get_nth_block_no_inline(buf_pool_t* pool, ulint i);  
+ 
+ 			
+ /* The buffer control block structure */
+diff -r fe944d2c6e1f innobase/include/page0page.h
+--- a/innobase/include/page0page.h	Mon Nov 10 19:47:27 2008 -0800
++++ b/innobase/include/page0page.h	Mon Nov 10 19:48:24 2008 -0800
+@@ -260,6 +260,12 @@
+ /*============*/
+ 			/* out: number of user records */
+ 	page_t*	page);	/* in: index page */
++
++ulint
++page_get_n_recs_noninline(
++/*============*/
++			/* out: number of user records */
++	page_t*	page);	/* in: index page */
+ /*******************************************************************
+ Returns the number of records before the given record in chain.
+ The number includes infimum and supremum records. */
+@@ -519,6 +525,12 @@
+ UNIV_INLINE
+ ulint
+ page_get_data_size(
++/*===============*/
++			/* out: data in bytes */
++	page_t*	page);	/* in: index page */
++
++ulint
++page_get_data_size_noninline(
+ /*===============*/
+ 			/* out: data in bytes */
+ 	page_t*	page);	/* in: index page */
+diff -r fe944d2c6e1f innobase/page/page0page.c
+--- a/innobase/page/page0page.c	Mon Nov 10 19:47:27 2008 -0800
++++ b/innobase/page/page0page.c	Mon Nov 10 19:48:24 2008 -0800
+@@ -1994,3 +1994,25 @@
+ 		page_cur_move_to_next(&cur);
+ 	}
+ }
++
++ulint
++page_get_n_recs_noninline(
++/*============*/
++                        /* out: number of user records */
++        page_t* page)  /* in: index page */
++{
++ return page_get_n_recs(page);
++}
++
++
++ulint
++page_get_data_size_noninline(
++/*============*/
++                        /* out: number of user records */
++        page_t* page)  /* in: index page */
++{
++ return page_get_data_size(page);
++}
++
++
++
+diff -r fe944d2c6e1f mysql-test/r/information_schema.result
+--- a/mysql-test/r/information_schema.result	Mon Nov 10 19:47:27 2008 -0800
++++ b/mysql-test/r/information_schema.result	Mon Nov 10 19:48:25 2008 -0800
+@@ -42,6 +42,7 @@
+ COLLATION_CHARACTER_SET_APPLICABILITY
+ COLUMNS
+ COLUMN_PRIVILEGES
++INNODB_BUFFER_POOL_CONTENT
+ INDEX_STATISTICS
+ KEY_COLUMN_USAGE
+ PROCESSLIST
+@@ -741,7 +742,7 @@
+ CREATE VIEW a1 (t_CRASHME) AS SELECT f1 FROM t_crashme GROUP BY f1;
+ CREATE VIEW a2 AS SELECT t_CRASHME FROM a1;
+ count(*)
+-107
++108
+ drop view a2, a1;
+ drop table t_crashme;
+ select table_schema,table_name, column_name from
+@@ -802,6 +803,7 @@
+ TABLE_NAME	COLUMN_NAME	PRIVILEGES
+ COLUMNS	TABLE_NAME	select
+ COLUMN_PRIVILEGES	TABLE_NAME	select
++INNODB_BUFFER_POOL_CONTENT	TABLE_NAME	select
+ INDEX_STATISTICS	TABLE_NAME	select
+ KEY_COLUMN_USAGE	TABLE_NAME	select
+ STATISTICS	TABLE_NAME	select
+@@ -815,7 +817,7 @@
+ flush privileges;
+ SELECT table_schema, count(*) FROM information_schema.TABLES GROUP BY TABLE_SCHEMA;
+ table_schema	count(*)
+-information_schema	22
++information_schema	23
+ mysql	17
+ create table t1 (i int, j int);
+ create trigger trg1 before insert on t1 for each row
+@@ -1206,6 +1208,7 @@
+ COLLATION_CHARACTER_SET_APPLICABILITY	COLLATION_NAME
+ COLUMNS	TABLE_SCHEMA
+ COLUMN_PRIVILEGES	TABLE_SCHEMA
++INNODB_BUFFER_POOL_CONTENT	TABLE_SCHEMA
+ INDEX_STATISTICS	TABLE_SCHEMA
+ KEY_COLUMN_USAGE	CONSTRAINT_SCHEMA
+ PROCESSLIST	ID
+@@ -1243,6 +1246,7 @@
+ COLLATION_CHARACTER_SET_APPLICABILITY	COLLATION_NAME
+ COLUMNS	TABLE_SCHEMA
+ COLUMN_PRIVILEGES	TABLE_SCHEMA
++INNODB_BUFFER_POOL_CONTENT	TABLE_SCHEMA
+ INDEX_STATISTICS	TABLE_SCHEMA
+ KEY_COLUMN_USAGE	CONSTRAINT_SCHEMA
+ PROCESSLIST	ID
+@@ -1332,6 +1336,7 @@
+ COLUMNS	information_schema.COLUMNS	1
+ COLUMN_PRIVILEGES	information_schema.COLUMN_PRIVILEGES	1
+ INDEX_STATISTICS	information_schema.INDEX_STATISTICS	1
++INNODB_BUFFER_POOL_CONTENT	information_schema.INNODB_BUFFER_POOL_CONTENT	1
+ KEY_COLUMN_USAGE	information_schema.KEY_COLUMN_USAGE	1
+ PROCESSLIST	information_schema.PROCESSLIST	1
+ PROFILING	information_schema.PROFILING	1
+diff -r fe944d2c6e1f mysql-test/r/information_schema_db.result
+--- a/mysql-test/r/information_schema_db.result	Mon Nov 10 19:47:27 2008 -0800
++++ b/mysql-test/r/information_schema_db.result	Mon Nov 10 19:48:25 2008 -0800
+@@ -11,6 +11,7 @@
+ COLLATION_CHARACTER_SET_APPLICABILITY
+ COLUMNS
+ COLUMN_PRIVILEGES
++INNODB_BUFFER_POOL_CONTENT
+ INDEX_STATISTICS
+ KEY_COLUMN_USAGE
+ PROCESSLIST
+diff -r fe944d2c6e1f mysql-test/r/mysqlshow.result
+--- a/mysql-test/r/mysqlshow.result	Mon Nov 10 19:47:27 2008 -0800
++++ b/mysql-test/r/mysqlshow.result	Mon Nov 10 19:48:25 2008 -0800
+@@ -85,6 +85,7 @@
+ | COLLATION_CHARACTER_SET_APPLICABILITY |
+ | COLUMNS                               |
+ | COLUMN_PRIVILEGES                     |
++| INNODB_BUFFER_POOL_CONTENT            |
+ | INDEX_STATISTICS                      |
+ | KEY_COLUMN_USAGE                      |
+ | PROCESSLIST                           |
+@@ -112,6 +113,7 @@
+ | COLLATION_CHARACTER_SET_APPLICABILITY |
+ | COLUMNS                               |
+ | COLUMN_PRIVILEGES                     |
++| INNODB_BUFFER_POOL_CONTENT            |
+ | INDEX_STATISTICS                      |
+ | KEY_COLUMN_USAGE                      |
+ | PROCESSLIST                           |
+diff -r fe944d2c6e1f patch_info/innodb_show_bp.info
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/patch_info/innodb_show_bp.info	Mon Nov 10 19:48:25 2008 -0800
+@@ -0,0 +1,6 @@
++File=innodb_show_bp.patch
++Name=show innodb buffer pool content
++Version=1.0
++Author=Percona <info@percona.com>
++License=GPL
++Comment=
+diff -r fe944d2c6e1f sql/ha_innodb.cc
+--- a/sql/ha_innodb.cc	Mon Nov 10 19:47:27 2008 -0800
++++ b/sql/ha_innodb.cc	Mon Nov 10 19:48:25 2008 -0800
+@@ -128,10 +128,12 @@
+ #include "../innobase/include/lock0lock.h"
+ #include "../innobase/include/dict0crea.h"
+ #include "../innobase/include/btr0cur.h"
++#include "../innobase/include/buf0buf.h"
+ #include "../innobase/include/btr0btr.h"
+ #include "../innobase/include/fsp0fsp.h"
+ #include "../innobase/include/sync0sync.h"
+ #include "../innobase/include/fil0fil.h"
++#include "../innobase/include/page0page.h"
+ #include "../innobase/include/trx0xa.h"
+ }
+ 
+@@ -6483,6 +6485,116 @@
+   	DBUG_RETURN(FALSE);
+ }
+ 
++bool
++innodb_I_S_buffer_pool_content(THD* thd, TABLE_LIST *tables)
++{
++	ulint		size;
++	ulint		i;
++	dulint		id;
++	ulint		n_found;
++	buf_frame_t* 	frame;
++	dict_index_t*	index;
++	buf_block_t*    block;
++
++	char *p;
++	char db_name_raw[NAME_LEN*5+1];
++	char table_name_raw[NAME_LEN*5+1];
++
++        DBUG_ENTER("innodb_I_S_buffer_pool_content");
++
++
++	size = buf_pool->curr_size;
++
++	n_found = 0;
++
++	TABLE *table= tables->table;
++
++
++	//buf_pool_dump();
++
++
++	for (i = 0; i < size; i++) {
++		block = buf_pool_get_nth_block_no_inline(buf_pool, i);
++		frame = block->frame;
++		if (fil_page_get_type(frame)==0) continue;
++
++		char page_type[64];
++
++		switch(fil_page_get_type(frame))
++		{
++			case FIL_PAGE_INDEX:
++				strcpy(page_type, "index");
++				break;
++			case FIL_PAGE_UNDO_LOG:
++				strcpy(page_type, "undo_log");
++				break;
++			case FIL_PAGE_INODE:
++				strcpy(page_type, "inode");
++				break;
++			case FIL_PAGE_IBUF_FREE_LIST:
++				strcpy(page_type, "ibuf_free_list");
++				break;
++			default:
++				sprintf(page_type, "unknown", fil_page_get_type(frame));
++		}
++
++		table->field[0]->store((longlong)i, TRUE);
++		table->field[1]->store((longlong)block->space, TRUE);
++		table->field[2]->store((longlong)block->offset, TRUE);
++		table->field[3]->store((longlong)page_get_n_recs_noninline(block->frame), TRUE);
++		table->field[4]->store( ( fil_page_get_type(frame) == FIL_PAGE_INDEX ) ?  (longlong)page_get_data_size_noninline(block->frame):0, TRUE);
++		table->field[5]->store((longlong)block->flush_type, TRUE);
++		table->field[6]->store((longlong)block->buf_fix_count, TRUE);
++		table->field[7]->store((longlong)block->LRU_position, TRUE);
++		table->field[8]->store((longlong)fil_page_get_type(frame), TRUE);
++
++		table->field[9]->store(page_type, strlen(page_type), system_charset_info);
++
++		//fprintf(stderr, "block N %d, space %d, offset %d, records %d, datasize %d, page_type %s, flush_type %d, buf_fix_count %d, LRU_position %d", i, block->space, block->offset, page_get_n_recs_noninline(block->frame), page_get_data_size_noninline(block->frame), page_type,block->flush_type, block->buf_fix_count, block->LRU_position);
++
++		// flush_type, buf_fix_count, LRU_position
++
++		if (fil_page_get_type(frame) == FIL_PAGE_INDEX) {
++
++			id = btr_page_get_index_id_noninline(frame);
++			index = dict_index_get_if_in_cache(id);
++			if (index) {
++				table->field[10]->store(index->name, strlen(index->name), system_charset_info);
++				// fprintf(stderr, " index %s, table %s", index->name, index->table_name);
++
++				if((p = strchr(index->table_name, '/')))
++				{
++					strncpy(db_name_raw, index->table_name, p-index->table_name);
++					db_name_raw[p-index->table_name] = 0;
++					table->field[11]->store(db_name_raw, strlen(db_name_raw), system_charset_info);
++					p++;            
++				} else {
++					table->field[11]->store(NULL, 0, system_charset_info);
++					p = (char *)index->table_name;
++				}
++				strcpy(table_name_raw, p);
++
++				table->field[12]->store(table_name_raw, strlen(table_name_raw), system_charset_info);
++			} else {
++				table->field[10]->store(NULL, 0, system_charset_info);
++				table->field[11]->store(NULL, 0, system_charset_info);
++				table->field[12]->store(NULL, 0, system_charset_info);
++			}
++		}else{
++			table->field[10]->store(NULL, 0, system_charset_info);
++			table->field[11]->store(NULL, 0, system_charset_info);
++			table->field[12]->store(NULL, 0, system_charset_info);
++		}
++		//fprintf(stderr, "\n");
++		if (schema_table_store_record(thd, table))
++		{
++			DBUG_RETURN(1);
++		}
++	}
++
++	DBUG_RETURN(0);
++}
++
+ /****************************************************************************
+ Implements the SHOW MUTEX STATUS command. . */
+ 
+diff -r fe944d2c6e1f sql/ha_innodb.h
+--- a/sql/ha_innodb.h	Mon Nov 10 19:47:27 2008 -0800
++++ b/sql/ha_innodb.h	Mon Nov 10 19:48:25 2008 -0800
+@@ -263,6 +263,7 @@
+ 
+ int innobase_drop_database(char *path);
+ bool innodb_show_status(THD* thd);
++bool innodb_I_S_buffer_pool_content(THD* thd, TABLE_LIST *tables);
+ bool innodb_mutex_show_status(THD* thd);
+ void innodb_export_status(void);
+ 
+diff -r fe944d2c6e1f sql/sql_parse.cc
+--- a/sql/sql_parse.cc	Mon Nov 10 19:47:27 2008 -0800
++++ b/sql/sql_parse.cc	Mon Nov 10 19:48:25 2008 -0800
+@@ -2926,6 +2926,7 @@
+   case SCH_COLUMN_PRIVILEGES:
+   case SCH_TABLE_CONSTRAINTS:
+   case SCH_KEY_COLUMN_USAGE:
++  case SCH_INNODB_I_S_BUFFER_POOL_CONTENT:
+   default:
+     break;
+   }
+diff -r fe944d2c6e1f sql/sql_show.cc
+--- a/sql/sql_show.cc	Mon Nov 10 19:47:27 2008 -0800
++++ b/sql/sql_show.cc	Mon Nov 10 19:48:25 2008 -0800
+@@ -27,6 +27,10 @@
+ 
+ #ifdef HAVE_BERKELEY_DB
+ #include "ha_berkeley.h"			// For berkeley_show_logs
++#endif
++
++#ifdef HAVE_INNOBASE_DB
++#include "ha_innodb.h"
+ #endif
+ 
+ #ifndef NO_EMBEDDED_ACCESS_CHECKS
+@@ -4042,6 +4046,13 @@
+   DBUG_RETURN(res);
+ }
+ 
++int fill_innodb_bp_content(THD *thd, TABLE_LIST *tables, COND *cond)
++{
++  DBUG_ENTER("fill_innodb_bp_content");
++  int res= 0;
++  innodb_I_S_buffer_pool_content(thd, tables);
++  DBUG_RETURN(res);
++}
+ 
+ /*
+   Find schema_tables elment by name
+@@ -4951,6 +4962,24 @@
+ };
+ 
+ 
++ST_FIELD_INFO innodb_bp_content_fields_info[]=
++{
++  {"BLOCK_NUM", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Block_num"},
++  {"SPACE", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Space"},
++  {"OFFSET", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Offset"},
++  {"RECORDS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Records"},
++  {"DATASIZE", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Datasize"},
++  {"FLUSH_TYPE", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Flush_type"},
++  {"FIX_COUNT", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Fix_count"},
++  {"LRU_POSITION", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "LRU_position"},
++  {"PAGE_TYPE_ID", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Page_type_id"},
++  {"PAGE_TYPE", NAME_LEN, MYSQL_TYPE_STRING, 0, 0, "Page_type"},
++  {"INDEX_NAME", NAME_LEN, MYSQL_TYPE_STRING, 0, 0, "Index_name"},
++  {"TABLE_SCHEMA", NAME_LEN, MYSQL_TYPE_STRING, 0, 0, "Table_schem"},
++  {"TABLE_NAME", NAME_LEN, MYSQL_TYPE_STRING, 0, 0, "Table_name"},
++  {0, 0, MYSQL_TYPE_STRING, 0, 0, 0}
++};
++
+ /*
+   Description of ST_FIELD_INFO in table.h
+ */
+@@ -4969,6 +4998,8 @@
+    get_all_tables, make_columns_old_format, get_schema_column_record, 1, 2, 0},
+   {"COLUMN_PRIVILEGES", column_privileges_fields_info, create_schema_table,
+     fill_schema_column_privileges, 0, 0, -1, -1, 0},
++  {"INNODB_BUFFER_POOL_CONTENT", innodb_bp_content_fields_info, create_schema_table,
++    fill_innodb_bp_content, 0, 0, -1, -1, 0},
+   {"INDEX_STATISTICS", index_stats_fields_info, create_schema_table,
+    fill_schema_index_stats, make_old_format, 0, -1, -1, 0},
+   {"KEY_COLUMN_USAGE", key_column_usage_fields_info, create_schema_table,
+diff -r fe944d2c6e1f sql/table.h
+--- a/sql/table.h	Mon Nov 10 19:47:27 2008 -0800
++++ b/sql/table.h	Mon Nov 10 19:48:25 2008 -0800
+@@ -375,6 +375,7 @@
+   SCH_COLLATION_CHARACTER_SET_APPLICABILITY,
+   SCH_COLUMNS,
+   SCH_COLUMN_PRIVILEGES,
++  SCH_INNODB_I_S_BUFFER_POOL_CONTENT,
+   SCH_INDEX_STATS,
+   SCH_KEY_COLUMN_USAGE,
+   SCH_OPEN_TABLES,
diff --git a/1010_innodb_show_hashed_memory-percona-5.0.75-b12.patch b/1010_innodb_show_hashed_memory-percona-5.0.75-b12.patch
new file mode 100644
index 0000000..191193e
--- /dev/null
+++ b/1010_innodb_show_hashed_memory-percona-5.0.75-b12.patch
@@ -0,0 +1,275 @@
+diff -ruN mysql-5.0.67_highperf/innobase/buf/buf0buf.c mysql-5.0.67_highperf_tmp/innobase/buf/buf0buf.c
+--- mysql-5.0.67_highperf/innobase/buf/buf0buf.c	2008-11-12 09:25:58.000000000 +0900
++++ mysql-5.0.67_highperf_tmp/innobase/buf/buf0buf.c	2008-11-12 09:27:52.000000000 +0900
+@@ -2454,13 +2454,15 @@
+ 				(ulong) UT_LIST_GET_LEN(buf_pool->awe_LRU_free_mapped));
+ 	}
+ 	fprintf(file,
+-		"Buffer pool size   %lu\n"
+-		"Free buffers       %lu\n"
+-		"Database pages     %lu\n"
+-		"Modified db pages  %lu\n"
++		"Buffer pool size        %lu\n"
++		"Buffer pool size, bytes %lu\n"
++		"Free buffers            %lu\n"
++		"Database pages          %lu\n"
++		"Modified db pages       %lu\n"
+ 		"Pending reads %lu\n"
+ 		"Pending writes: LRU %lu, flush list %lu, single page %lu\n",
+ 		(ulong) size,
++		(ulong) size * UNIV_PAGE_SIZE,
+ 		(ulong) UT_LIST_GET_LEN(buf_pool->free),
+ 		(ulong) UT_LIST_GET_LEN(buf_pool->LRU),
+ 		(ulong) UT_LIST_GET_LEN(buf_pool->flush_list),
+diff -ruN mysql-5.0.67_highperf/innobase/fil/fil0fil.c mysql-5.0.67_highperf_tmp/innobase/fil/fil0fil.c
+--- mysql-5.0.67_highperf/innobase/fil/fil0fil.c	2008-11-12 09:26:07.000000000 +0900
++++ mysql-5.0.67_highperf_tmp/innobase/fil/fil0fil.c	2008-11-12 09:27:52.000000000 +0900
+@@ -4472,3 +4472,30 @@
+ 
+ 	return(mach_read_from_2(page + FIL_PAGE_TYPE));
+ }
++
++/*************************************************************************
++Return local hash table informations. */
++
++ulint
++fil_system_hash_cells(void)
++/*=======================*/
++{
++	if (fil_system) {
++		return (fil_system->spaces->n_cells
++			+ fil_system->name_hash->n_cells);
++	} else {
++		return 0;
++	}
++}
++
++ulint
++fil_system_hash_nodes(void)
++/*=======================*/
++{
++	if (fil_system) {
++		return (UT_LIST_GET_LEN(fil_system->space_list)
++			* (sizeof(fil_space_t) + MEM_BLOCK_HEADER_SIZE));
++	} else {
++		return 0;
++	}
++}
+diff -ruN mysql-5.0.67_highperf/innobase/include/fil0fil.h mysql-5.0.67_highperf_tmp/innobase/include/fil0fil.h
+--- mysql-5.0.67_highperf/innobase/include/fil0fil.h	2008-11-12 09:26:07.000000000 +0900
++++ mysql-5.0.67_highperf_tmp/innobase/include/fil0fil.h	2008-11-12 09:27:52.000000000 +0900
+@@ -701,6 +701,16 @@
+ 			written to page, the return value not defined */
+ 	byte* 	page);	/* in: file page */
+ 
++/*************************************************************************
++Return local hash table informations. */
++
++ulint
++fil_system_hash_cells(void);
++/*========================*/
++
++ulint
++fil_system_hash_nodes(void);
++/*========================*/
+ 
+ typedef	struct fil_space_struct	fil_space_t;
+ 
+diff -ruN mysql-5.0.67_highperf/innobase/include/thr0loc.h mysql-5.0.67_highperf_tmp/innobase/include/thr0loc.h
+--- mysql-5.0.67_highperf/innobase/include/thr0loc.h	2008-11-12 09:24:58.000000000 +0900
++++ mysql-5.0.67_highperf_tmp/innobase/include/thr0loc.h	2008-11-12 09:27:52.000000000 +0900
+@@ -77,6 +77,17 @@
+ /*=============================*/
+ 			/* out: pointer to the in_ibuf field */
+ 
++/*************************************************************************
++Return local hash table informations. */
++
++ulint
++thr_local_hash_cells(void);
++/*=======================*/
++
++ulint
++thr_local_hash_nodes(void);
++/*=======================*/
++
+ #ifndef UNIV_NONINL
+ #include "thr0loc.ic"
+ #endif
+diff -ruN mysql-5.0.67_highperf/innobase/srv/srv0srv.c mysql-5.0.67_highperf_tmp/innobase/srv/srv0srv.c
+--- mysql-5.0.67_highperf/innobase/srv/srv0srv.c	2008-11-12 09:26:07.000000000 +0900
++++ mysql-5.0.67_highperf_tmp/innobase/srv/srv0srv.c	2008-11-12 09:54:19.000000000 +0900
+@@ -1645,6 +1645,14 @@
+ 	time_t	current_time;
+ 	ulint   n_reserved;
+ 
++	ulint	btr_search_sys_subtotal;
++	ulint	lock_sys_subtotal;
++	ulint	recv_sys_subtotal;
++	ulint	io_counter_subtotal;
++
++	ulint	i;
++	trx_t*	trx;
++
+ 	mutex_enter(&srv_innodb_monitor_mutex);
+ 
+ 	current_time = time(NULL);
+@@ -1747,6 +1755,91 @@
+ 				ut_total_allocated_memory,
+ 				mem_pool_get_reserved(mem_comm_pool));
+ 
++	/* Calcurate reserved memories */
++	if (btr_search_sys && btr_search_sys->hash_index->heap) {
++		btr_search_sys_subtotal = mem_heap_get_size(btr_search_sys->hash_index->heap);
++	} else {
++		btr_search_sys_subtotal = 0;
++		for (i=0; i < btr_search_sys->hash_index->n_mutexes; i++) {
++			btr_search_sys_subtotal += mem_heap_get_size(btr_search_sys->hash_index->heaps[i]);
++		}
++	}
++
++	lock_sys_subtotal = 0;
++	if (trx_sys) {
++	mutex_enter(&kernel_mutex);
++	trx = UT_LIST_GET_FIRST(trx_sys->mysql_trx_list);
++	while (trx) {
++		lock_sys_subtotal += ((trx->lock_heap) ? mem_heap_get_size(trx->lock_heap) : 0);
++		trx = UT_LIST_GET_NEXT(mysql_trx_list, trx);
++	}
++	mutex_exit(&kernel_mutex);
++	}
++
++	recv_sys_subtotal = ((recv_sys && recv_sys->addr_hash)
++			     ? mem_heap_get_size(recv_sys->heap) : 0);
++
++	io_counter_subtotal = ((buf_pool->io_counter_heap)
++			       ? mem_heap_get_size(buf_pool->io_counter_heap) : 0);
++
++	fprintf(file,
++	"Internal hash tables (constant factor + variable factor)\n"
++	"    Adaptive hash index %lu \t(%lu + %lu)\n"
++	"    Page hash           %lu\n"
++	"    Dictionary cache    %lu \t(%lu + %lu)\n"
++	"    File system         %lu \t(%lu + %lu)\n"
++	"    Lock system         %lu \t(%lu + %lu)\n"
++	"    Recovery system     %lu \t(%lu + %lu)\n"
++	"    Threads             %lu \t(%lu + %lu)\n"
++	"    innodb_io_pattern   %lu \t(%lu + %lu)\n",
++
++		(ulong) (btr_search_sys
++			 ? (btr_search_sys->hash_index->n_cells * sizeof(hash_cell_t)) : 0)
++			+ btr_search_sys_subtotal,
++		(ulong) (btr_search_sys
++			 ? (btr_search_sys->hash_index->n_cells * sizeof(hash_cell_t)) : 0),
++		(ulong) btr_search_sys_subtotal,
++
++		(ulong) (buf_pool->page_hash->n_cells * sizeof(hash_cell_t)),
++
++		(ulong) (dict_sys ? ((dict_sys->table_hash->n_cells
++			  + dict_sys->table_id_hash->n_cells
++			  + dict_sys->col_hash->n_cells) * sizeof(hash_cell_t)
++			 + dict_sys->size) : 0),
++		(ulong) (dict_sys ? ((dict_sys->table_hash->n_cells
++			  + dict_sys->table_id_hash->n_cells
++			  + dict_sys->col_hash->n_cells) * sizeof(hash_cell_t)) : 0),
++		(ulong) (dict_sys ? (dict_sys->size) : 0),
++
++		(ulong) (fil_system_hash_cells() * sizeof(hash_cell_t)
++			 + fil_system_hash_nodes()),
++		(ulong) (fil_system_hash_cells() * sizeof(hash_cell_t)),
++		(ulong) fil_system_hash_nodes(),
++
++		(ulong) ((lock_sys ? (lock_sys->rec_hash->n_cells * sizeof(hash_cell_t)) : 0)
++			 + lock_sys_subtotal),
++		(ulong) (lock_sys ? (lock_sys->rec_hash->n_cells * sizeof(hash_cell_t)) : 0),
++		(ulong) lock_sys_subtotal,
++
++		(ulong) (((recv_sys && recv_sys->addr_hash)
++			  ? (recv_sys->addr_hash->n_cells * sizeof(hash_cell_t)) : 0)
++			 + recv_sys_subtotal),
++		(ulong) ((recv_sys && recv_sys->addr_hash)
++			 ? (recv_sys->addr_hash->n_cells * sizeof(hash_cell_t)) : 0),
++		(ulong) recv_sys_subtotal,
++
++		(ulong) (thr_local_hash_cells() * sizeof(hash_cell_t)
++			 + thr_local_hash_nodes()),
++		(ulong) (thr_local_hash_cells() * sizeof(hash_cell_t)),
++		(ulong) thr_local_hash_nodes(),
++
++		(ulong) (((buf_pool->io_counter_hash) /* needs &(buf_pool->mutex) ? */
++			  ? (buf_pool->io_counter_hash->n_cells * sizeof(hash_cell_t)) : 0)
++			 + io_counter_subtotal),
++		(ulong) ((buf_pool->io_counter_hash) /* needs &(buf_pool->mutex) ? */
++			 ? (buf_pool->io_counter_hash->n_cells * sizeof(hash_cell_t)) : 0),
++		(ulong) io_counter_subtotal);
++
+ 	if (srv_use_awe) {
+ 		fprintf(file,
+ 	"In addition to that %lu MB of AWE memory allocated\n",
+diff -ruN mysql-5.0.67_highperf/innobase/thr/thr0loc.c mysql-5.0.67_highperf_tmp/innobase/thr/thr0loc.c
+--- mysql-5.0.67_highperf/innobase/thr/thr0loc.c	2008-11-12 09:24:58.000000000 +0900
++++ mysql-5.0.67_highperf_tmp/innobase/thr/thr0loc.c	2008-11-12 09:27:52.000000000 +0900
+@@ -32,6 +32,7 @@
+ 
+ /* The hash table. The module is not yet initialized when it is NULL. */
+ hash_table_t*	thr_local_hash	= NULL;
++ulint		thr_local_hash_n_nodes = 0;
+ 
+ /* The private data for each thread should be put to
+ the structure below and the accessor functions written
+@@ -223,6 +224,7 @@
+ 	HASH_INSERT(thr_local_t, hash, thr_local_hash,
+ 			os_thread_pf(os_thread_get_curr_id()),
+ 			local);
++	thr_local_hash_n_nodes++;
+ 				
+ 	mutex_exit(&thr_local_mutex);
+ }
+@@ -251,6 +253,7 @@
+ 						
+ 	HASH_DELETE(thr_local_t, hash, thr_local_hash,
+ 				os_thread_pf(id), local);
++	thr_local_hash_n_nodes--;
+ 
+ 	mutex_exit(&thr_local_mutex);
+ 				
+@@ -274,3 +277,29 @@
+ 	mutex_create(&thr_local_mutex);
+ 	mutex_set_level(&thr_local_mutex, SYNC_THR_LOCAL);
+ }
++
++/*************************************************************************
++Return local hash table informations. */
++
++ulint
++thr_local_hash_cells(void)
++/*======================*/
++{
++	if (thr_local_hash) {
++		return (thr_local_hash->n_cells);
++	} else {
++		return 0;
++	}
++}
++
++ulint
++thr_local_hash_nodes(void)
++/*======================*/
++{
++	if (thr_local_hash) {
++		return (thr_local_hash_n_nodes
++			* (sizeof(thr_local_t) + MEM_BLOCK_HEADER_SIZE));
++	} else {
++		return 0;
++	}
++}
+diff -ruN mysql-5.0.67_highperf/patch_info/innodb_show_hashed_memory.info mysql-5.0.67_highperf_tmp/patch_info/innodb_show_hashed_memory.info
+--- /dev/null	1970-01-01 09:00:00.000000000 +0900
++++ mysql-5.0.67_highperf_tmp/patch_info/innodb_show_hashed_memory.info	2008-11-12 09:27:52.000000000 +0900
+@@ -0,0 +1,6 @@
++File=innodb_show_hashed_memory.patch
++Name=Adds additional information of InnoDB internal hash table memories in SHOW INNODB STATUS
++Version=1.0
++Author=Percona <info@percona.com>
++License=GPL
++Comment=
diff --git a/1011_innodb_check_fragmentation-percona-5.0.75-b12.patch b/1011_innodb_check_fragmentation-percona-5.0.75-b12.patch
new file mode 100644
index 0000000..4b16731
--- /dev/null
+++ b/1011_innodb_check_fragmentation-percona-5.0.75-b12.patch
@@ -0,0 +1,275 @@
+diff -r 936d427a9a15 innobase/btr/btr0cur.c
+--- a/innobase/btr/btr0cur.c	Mon Dec 22 00:33:03 2008 -0800
++++ b/innobase/btr/btr0cur.c	Mon Dec 22 00:33:11 2008 -0800
+@@ -516,6 +516,14 @@
+ 						== index->table->comp);
+ 			}
+ 
++			if (level == 0) {
++				/* Initializes status counters */
++				innobase_mysql_thd_init_innodb_scan_cont();
++				innobase_mysql_thd_init_innodb_scan_jump();
++				innobase_mysql_thd_init_innodb_scan_data();
++				innobase_mysql_thd_init_innodb_scan_garbage();
++			}
++
+ 			break;
+ 		}
+ 
+@@ -663,6 +671,12 @@
+ 			        btr_cur_add_path_info(cursor, height,
+ 						      root_height);
+ 		        }
++
++			/* Initializes status counters */
++			innobase_mysql_thd_init_innodb_scan_cont();
++			innobase_mysql_thd_init_innodb_scan_jump();
++			innobase_mysql_thd_init_innodb_scan_data();
++			innobase_mysql_thd_init_innodb_scan_garbage();
+ 
+ 			break;
+ 		}
+diff -r 936d427a9a15 innobase/btr/btr0pcur.c
+--- a/innobase/btr/btr0pcur.c	Mon Dec 22 00:33:03 2008 -0800
++++ b/innobase/btr/btr0pcur.c	Mon Dec 22 00:33:11 2008 -0800
+@@ -381,6 +381,7 @@
+ 				last record of the current page */
+ 	mtr_t*		mtr)	/* in: mtr */
+ {
++	ulint	page_no;
+ 	ulint	next_page_no;
+ 	ulint	space;
+ 	page_t*	page;
+@@ -393,11 +394,22 @@
+ 	cursor->old_stored = BTR_PCUR_OLD_NOT_STORED;
+ 	
+ 	page = btr_pcur_get_page(cursor);
++	page_no = buf_frame_get_page_no(page);
+ 
+ 	next_page_no = btr_page_get_next(page, mtr);
+ 	space = buf_frame_get_space_id(page);
+ 
+ 	ut_ad(next_page_no != FIL_NULL);	
++
++	if (next_page_no - page_no == 1) {
++		innobase_mysql_thd_increment_innodb_scan_cont(1);
++	} else {
++		innobase_mysql_thd_increment_innodb_scan_jump(1);
++	}
++	innobase_mysql_thd_increment_innodb_scan_data(
++				page_get_data_size(page));
++	innobase_mysql_thd_increment_innodb_scan_garbage(
++				page_header_get_field(page, PAGE_GARBAGE));
+ 
+ 	next_page = btr_page_get(space, next_page_no, cursor->latch_mode, mtr);
+ 	ut_a(page_is_comp(next_page) == page_is_comp(page));
+@@ -427,6 +439,7 @@
+ 				record of the current page */
+ 	mtr_t*		mtr)	/* in: mtr */
+ {
++	ulint	page_no;
+ 	ulint	prev_page_no;
+ 	ulint	space;
+ 	page_t*	page;
+@@ -462,9 +475,20 @@
+ 	btr_pcur_restore_position(latch_mode2, cursor, mtr);	
+ 
+ 	page = btr_pcur_get_page(cursor);
++	page_no = buf_frame_get_page_no(page);
+ 
+ 	prev_page_no = btr_page_get_prev(page, mtr);
+ 	space = buf_frame_get_space_id(page);
++
++	if (page_no - prev_page_no == 1) {
++		innobase_mysql_thd_increment_innodb_scan_cont(1);
++	} else {
++		innobase_mysql_thd_increment_innodb_scan_jump(1);
++	}
++	innobase_mysql_thd_increment_innodb_scan_data(
++				page_get_data_size(page));
++	innobase_mysql_thd_increment_innodb_scan_garbage(
++				page_header_get_field(page, PAGE_GARBAGE));
+ 
+ 	if (btr_pcur_is_before_first_on_page(cursor, mtr)
+ 					&& (prev_page_no != FIL_NULL)) {	
+diff -r 936d427a9a15 innobase/btr/btr0sea.c
+--- a/innobase/btr/btr0sea.c	Mon Dec 22 00:33:03 2008 -0800
++++ b/innobase/btr/btr0sea.c	Mon Dec 22 00:33:11 2008 -0800
+@@ -861,6 +861,12 @@
+ 
+ 	buf_pool->n_page_gets++;
+ 
++	/* Initializes status counters */
++	innobase_mysql_thd_init_innodb_scan_cont();
++	innobase_mysql_thd_init_innodb_scan_jump();
++	innobase_mysql_thd_init_innodb_scan_data();
++	innobase_mysql_thd_init_innodb_scan_garbage();
++
+ 	return(TRUE);	
+ 
+ 	/*-------------------------------------------*/
+diff -r 936d427a9a15 innobase/include/btr0cur.h
+--- a/innobase/include/btr0cur.h	Mon Dec 22 00:33:03 2008 -0800
++++ b/innobase/include/btr0cur.h	Mon Dec 22 00:33:11 2008 -0800
+@@ -697,6 +697,17 @@
+ extern ulint	btr_cur_n_non_sea_old;
+ extern ulint	btr_cur_n_sea_old;
+ 
++/*--------------------------------------*/
++/* prototypes for new functions added to ha_innodb.cc */
++void innobase_mysql_thd_init_innodb_scan_cont();
++void innobase_mysql_thd_increment_innodb_scan_cont(ulong length);
++void innobase_mysql_thd_init_innodb_scan_jump();
++void innobase_mysql_thd_increment_innodb_scan_jump(ulong length);
++void innobase_mysql_thd_init_innodb_scan_data();
++void innobase_mysql_thd_increment_innodb_scan_data(ulong length);
++void innobase_mysql_thd_init_innodb_scan_garbage();
++void innobase_mysql_thd_increment_innodb_scan_garbage(ulong length);
++
+ #ifndef UNIV_NONINL
+ #include "btr0cur.ic"
+ #endif
+diff -r 936d427a9a15 patch_info/innodb_check_fragmentation.info
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/patch_info/innodb_check_fragmentation.info	Mon Dec 22 00:33:11 2008 -0800
+@@ -0,0 +1,6 @@
++File=innodb_check_fragmentation.patch
++Name=Session status to check fragmentation of the last InnoDB scan
++Version=1.0
++Author=Percona <info@percona.com>
++License=GPL
++Comment=The names are Innodb_scan_*
+diff -r 936d427a9a15 sql/ha_innodb.cc
+--- a/sql/ha_innodb.cc	Mon Dec 22 00:33:03 2008 -0800
++++ b/sql/ha_innodb.cc	Mon Dec 22 00:33:11 2008 -0800
+@@ -760,6 +760,102 @@
+ }
+ 
+ /*************************************************************************
++Initializes Innodb_scan_blocks_contiguous. */
++extern "C"
++void
++innobase_mysql_thd_init_innodb_scan_cont()
++{
++	THD *thd=current_thd;
++	if (likely(thd != 0)) {
++		thd->status_var.innodb_scan_cont = 0;
++	}
++}
++
++/*************************************************************************
++Increments Innodb_scan_blocks_contiguous. */
++extern "C"
++void
++innobase_mysql_thd_increment_innodb_scan_cont(ulong length)
++{
++	THD *thd=current_thd;
++	if (likely(thd != 0)) {
++		thd->status_var.innodb_scan_cont+= length;
++	}
++}
++
++/*************************************************************************
++Initializes Innodb_scan_blocks_jumpy. */
++extern "C"
++void
++innobase_mysql_thd_init_innodb_scan_jump()
++{
++	THD *thd=current_thd;
++	if (likely(thd != 0)) {
++		thd->status_var.innodb_scan_jump = 0;
++	}
++}
++
++/*************************************************************************
++Increments Innodb_scan_blocks_jumpy. */
++extern "C"
++void
++innobase_mysql_thd_increment_innodb_scan_jump(ulong length)
++{
++	THD *thd=current_thd;
++	if (likely(thd != 0)) {
++		thd->status_var.innodb_scan_jump+= length;
++	}
++}
++
++/*************************************************************************
++Initializes Innodb_scan_data_in_pages. */
++extern "C"
++void
++innobase_mysql_thd_init_innodb_scan_data()
++{
++	THD *thd=current_thd;
++	if (likely(thd != 0)) {
++		thd->status_var.innodb_scan_data = 0;
++	}
++}
++
++/*************************************************************************
++Increments Innodb_scan_data_in_pages. */
++extern "C"
++void
++innobase_mysql_thd_increment_innodb_scan_data(ulong length)
++{
++	THD *thd=current_thd;
++	if (likely(thd != 0)) {
++		thd->status_var.innodb_scan_data+= length;
++	}
++}
++
++/*************************************************************************
++Initializes Innodb_scan_garbages_in_pages. */
++extern "C"
++void
++innobase_mysql_thd_init_innodb_scan_garbage()
++{
++	THD *thd=current_thd;
++	if (likely(thd != 0)) {
++		thd->status_var.innodb_scan_garbage = 0;
++	}
++}
++
++/*************************************************************************
++Increments Innodb_scan_garbages_in_pages. */
++extern "C"
++void
++innobase_mysql_thd_increment_innodb_scan_garbage(ulong length)
++{
++	THD *thd=current_thd;
++	if (likely(thd != 0)) {
++		thd->status_var.innodb_scan_garbage+= length;
++	}
++}
++
++/*************************************************************************
+ Gets the InnoDB transaction handle for a MySQL handler object, creates
+ an InnoDB transaction struct if the corresponding MySQL thread struct still
+ lacks one. */
+diff -r 936d427a9a15 sql/mysqld.cc
+--- a/sql/mysqld.cc	Mon Dec 22 00:33:03 2008 -0800
++++ b/sql/mysqld.cc	Mon Dec 22 00:33:11 2008 -0800
+@@ -6673,6 +6673,10 @@
+   {"Handler_write",            (char*) offsetof(STATUS_VAR, ha_write_count), SHOW_LONG_STATUS},
+ #ifdef HAVE_INNOBASE_DB
+   {"Innodb_",                  (char*) &innodb_status_variables, SHOW_VARS},
++  {"Innodb_scan_pages_contiguous",(char*) offsetof(STATUS_VAR, innodb_scan_cont), SHOW_LONGLONG_STATUS},
++  {"Innodb_scan_pages_jumpy",  (char*) offsetof(STATUS_VAR, innodb_scan_jump), SHOW_LONGLONG_STATUS},
++  {"Innodb_scan_data_in_pages",(char*) offsetof(STATUS_VAR, innodb_scan_data), SHOW_LONGLONG_STATUS},
++  {"Innodb_scan_garbages_in_pages",(char*) offsetof(STATUS_VAR, innodb_scan_garbage), SHOW_LONGLONG_STATUS},
+ #endif /*HAVE_INNOBASE_DB*/
+   {"Key_blocks_not_flushed",   (char*) &dflt_key_cache_var.global_blocks_changed, SHOW_KEY_CACHE_LONG},
+   {"Key_blocks_unused",        (char*) &dflt_key_cache_var.blocks_unused, SHOW_KEY_CACHE_CONST_LONG},
+diff -r 936d427a9a15 sql/sql_class.h
+--- a/sql/sql_class.h	Mon Dec 22 00:33:03 2008 -0800
++++ b/sql/sql_class.h	Mon Dec 22 00:33:11 2008 -0800
+@@ -729,6 +729,10 @@
+     sense to add to the /global/ status variable counter.
+   */
+   double last_query_cost;
++  ulonglong innodb_scan_cont;
++  ulonglong innodb_scan_jump;
++  ulonglong innodb_scan_data;
++  ulonglong innodb_scan_garbage;
+ } STATUS_VAR;
+ 
+ /*
diff --git a/1012_innodb_io_pattern-percona-5.0.75-b12.patch b/1012_innodb_io_pattern-percona-5.0.75-b12.patch
new file mode 100644
index 0000000..604404f
--- /dev/null
+++ b/1012_innodb_io_pattern-percona-5.0.75-b12.patch
@@ -0,0 +1,688 @@
+diff -r 2bbfde0e0e70 include/mysql_com.h
+--- a/include/mysql_com.h	Mon Dec 22 00:33:11 2008 -0800
++++ b/include/mysql_com.h	Mon Dec 22 00:33:48 2008 -0800
+@@ -121,6 +121,9 @@
+ #define REFRESH_QUERY_CACHE_FREE 0x20000L /* pack query cache */
+ #define REFRESH_DES_KEY_FILE	0x40000L
+ #define REFRESH_USER_RESOURCES	0x80000L
++
++/* TRUNCATE INFORMATION_SCHEMA.INNODB_IO_PATTERN */
++#define REFRESH_INNODB_IO_PATTERN	0x1000000L
+ 
+ #define CLIENT_LONG_PASSWORD	1	/* new more secure passwords */
+ #define CLIENT_FOUND_ROWS	2	/* Found instead of affected rows */
+diff -r 2bbfde0e0e70 innobase/buf/buf0buf.c
+--- a/innobase/buf/buf0buf.c	Mon Dec 22 00:33:11 2008 -0800
++++ b/innobase/buf/buf0buf.c	Mon Dec 22 00:33:48 2008 -0800
+@@ -653,6 +653,9 @@
+ 	}
+ 
+ 	buf_pool->page_hash = hash_create(2 * max_size);
++	buf_pool->io_counter_hash = NULL;
++	buf_pool->io_counter_heap = NULL;
++	buf_pool->io_counters = 0;
+ 
+ 	buf_pool->n_pend_reads = 0;
+ 
+@@ -1966,6 +1969,9 @@
+ 	ulint		io_type;
+ 	ulint		read_page_no;
+ 	
++	buf_io_counter_t*	io_counter;
++	ulint		fold;
++	
+ 	ut_ad(block);
+ 
+ 	ut_a(block->state == BUF_BLOCK_FILE_PAGE);
+@@ -2067,6 +2073,26 @@
+ 		buf_pool->n_pages_read++;
+ 
+ 		rw_lock_x_unlock_gen(&(block->lock), BUF_IO_READ);
++		/* io_counter here */
++		if (srv_io_pattern && srv_io_pattern_trace_running) {
++		fold = buf_page_address_fold(block->space, block->offset);
++		HASH_SEARCH(hash, buf_pool->io_counter_hash, fold, io_counter,
++			(io_counter->space == block->space) && (io_counter->offset == block->offset));
++		if (io_counter == NULL && buf_pool->io_counters < srv_io_pattern_size_limit) {
++			io_counter = mem_heap_alloc(buf_pool->io_counter_heap,(sizeof(buf_io_counter_t)));
++			io_counter->space = block->space;
++			io_counter->offset = block->offset;
++			io_counter->n_read = 0;
++			io_counter->n_write = 0;
++			HASH_INSERT(buf_io_counter_t, hash, buf_pool->io_counter_hash,
++				buf_page_address_fold(block->space, block->offset), io_counter);
++			buf_pool->io_counters++;
++		}
++		if (io_counter != NULL) {
++			io_counter->index_id = ut_dulint_get_low(btr_page_get_index_id(buf_block_get_frame(block)));
++			io_counter->n_read++;
++		}
++		}
+ 
+ #ifdef UNIV_DEBUG
+ 		if (buf_debug_prints) {
+@@ -2082,6 +2108,26 @@
+ 		buf_flush_write_complete(block);
+ 
+ 		rw_lock_s_unlock_gen(&(block->lock), BUF_IO_WRITE);
++		/* io_counter here */
++		if (srv_io_pattern && srv_io_pattern_trace_running) {
++		fold = buf_page_address_fold(block->space, block->offset);
++		HASH_SEARCH(hash, buf_pool->io_counter_hash, fold, io_counter,
++			(io_counter->space == block->space) && (io_counter->offset == block->offset));
++		if (io_counter == NULL && buf_pool->io_counters < srv_io_pattern_size_limit) {
++			io_counter = mem_heap_alloc(buf_pool->io_counter_heap,(sizeof(buf_io_counter_t)));
++			io_counter->space = block->space;
++			io_counter->offset = block->offset;
++			io_counter->n_read = 0;
++			io_counter->n_write = 0;
++			HASH_INSERT(buf_io_counter_t, hash, buf_pool->io_counter_hash,
++				buf_page_address_fold(block->space, block->offset), io_counter);
++			buf_pool->io_counters++;
++		}
++		if (io_counter != NULL) {
++			io_counter->index_id = ut_dulint_get_low(btr_page_get_index_id(buf_block_get_frame(block)));
++			io_counter->n_write++;
++		}
++		}
+ 
+ 		buf_pool->n_pages_written++;
+ 
+@@ -2656,3 +2702,58 @@
+ return buf_pool_get_nth_block(buf_pool, i);
+ 
+ }
++
++/*************************************************************************
++Controls the internal hash table for IO pattern tracing
++along innodb_io_pattern_trace value.*/
++
++void
++buf_io_counter_control(void)
++/*========================*/
++{
++       ulint   n;
++
++       mutex_enter(&(buf_pool->mutex));
++       if (srv_io_pattern_trace) {
++               if (buf_pool->io_counter_hash == NULL) {
++                       /* estimating (buf_pool * 10) */
++                       buf_pool->io_counter_hash = hash_create(20 * buf_pool->max_size);
++                       buf_pool->io_counter_heap = mem_heap_create(4096 * 1024);
++                       buf_pool->io_counters = 0;
++
++                       srv_io_pattern = TRUE;
++               }
++       } else {
++               if (buf_pool->io_counter_hash != NULL) {
++                       srv_io_pattern = FALSE;
++
++                       for (n = 0; n < buf_pool->io_counter_hash->n_cells; n++) {
++                               (buf_pool->io_counter_hash->array + n)->node = NULL;
++                       }
++                       mem_heap_free(buf_pool->io_counter_heap);
++                       buf_pool->io_counter_heap = NULL;
++                       buf_pool->io_counters = 0;
++
++                       hash_table_free(buf_pool->io_counter_hash);
++                       buf_pool->io_counter_hash = NULL;
++               }
++       }
++       mutex_exit(&(buf_pool->mutex));
++}
++
++void
++buf_io_counter_clear(void)
++/*======================*/
++{
++       ulint   n;
++
++       mutex_enter(&(buf_pool->mutex));
++       if (buf_pool->io_counter_hash != NULL) {
++               for (n = 0; n < buf_pool->io_counter_hash->n_cells; n++) {
++                       (buf_pool->io_counter_hash->array + n)->node = NULL;
++               }
++               mem_heap_empty(buf_pool->io_counter_heap);
++               buf_pool->io_counters = 0;
++       }
++       mutex_exit(&(buf_pool->mutex));
++}
+diff -r 2bbfde0e0e70 innobase/include/buf0buf.h
+--- a/innobase/include/buf0buf.h	Mon Dec 22 00:33:11 2008 -0800
++++ b/innobase/include/buf0buf.h	Mon Dec 22 00:33:48 2008 -0800
+@@ -709,6 +709,18 @@
+ void buf_pool_dump(void);
+ buf_block_t* buf_pool_get_nth_block_no_inline(buf_pool_t* pool, ulint i);  
+ 
++
++/*************************************************************************
++Controls the internal hash table for IO pattern tracing
++along innodb_io_pattern_trace value.*/
++
++void
++buf_io_counter_control(void);
++/*=========================*/
++
++void
++buf_io_counter_clear(void);
++/*=======================*/
+ 			
+ /* The buffer control block structure */
+ 
+@@ -930,6 +942,9 @@
+ 	ulint		curr_size;	/* current pool size in pages;
+ 					currently always the same as
+ 					max_size */
++	hash_table_t*	io_counter_hash;
++	mem_heap_t*	io_counter_heap;
++	ulint		io_counters;
+ 	hash_table_t*	page_hash;	/* hash table of the file pages */
+ 
+ 	ulint		n_pend_reads;	/* number of pending read operations */
+@@ -1015,6 +1030,15 @@
+ 					locki table, are not in this list */
+ };
+ 
++struct buf_io_counter_struct{
++	ulint	space;
++	ulint	offset;
++	buf_io_counter_t*	hash;
++	ulint	index_id;
++	ulint	n_read;
++	ulint	n_write;
++};
++
+ /* States of a control block */
+ #define	BUF_BLOCK_NOT_USED	211	/* is in the free list */
+ #define BUF_BLOCK_READY_FOR_USE	212	/* when buf_get_free_block returns
+diff -r 2bbfde0e0e70 innobase/include/buf0types.h
+--- a/innobase/include/buf0types.h	Mon Dec 22 00:33:11 2008 -0800
++++ b/innobase/include/buf0types.h	Mon Dec 22 00:33:48 2008 -0800
+@@ -12,6 +12,8 @@
+ typedef	struct buf_block_struct		buf_block_t;
+ typedef	struct buf_pool_struct		buf_pool_t;
+ 
++typedef	struct buf_io_counter_struct	buf_io_counter_t;
++
+ /* The 'type' used of a buffer frame */
+ typedef	byte	buf_frame_t;
+ 
+diff -r 2bbfde0e0e70 innobase/include/srv0srv.h
+--- a/innobase/include/srv0srv.h	Mon Dec 22 00:33:11 2008 -0800
++++ b/innobase/include/srv0srv.h	Mon Dec 22 00:33:48 2008 -0800
+@@ -141,6 +141,11 @@
+ extern ulint	srv_io_capacity;
+ extern ulint	srv_read_ahead;
+ extern ulint	srv_adaptive_checkpoint;
++
++extern volatile ibool srv_io_pattern;
++extern ulong	srv_io_pattern_trace;
++extern ulong	srv_io_pattern_trace_running;
++extern ulong	srv_io_pattern_size_limit;
+ /*-------------------------------------------*/
+ 
+ extern ulint	srv_n_rows_inserted;
+diff -r 2bbfde0e0e70 innobase/srv/srv0srv.c
+--- a/innobase/srv/srv0srv.c	Mon Dec 22 00:33:11 2008 -0800
++++ b/innobase/srv/srv0srv.c	Mon Dec 22 00:33:48 2008 -0800
+@@ -337,6 +337,11 @@
+ 
+ ulint	srv_read_ahead = 3; /* 1: random  2: linear  3: Both */
+ ulint	srv_adaptive_checkpoint = 0; /* 0:disable 1:enable */
++
++volatile ibool srv_io_pattern = FALSE;
++ulint   srv_io_pattern_trace = 0;
++ulint   srv_io_pattern_trace_running = 0;
++ulint   srv_io_pattern_size_limit = ULINT_MAX - (1024 * 1024);
+ /*-------------------------------------------*/
+ ulong	srv_n_spin_wait_rounds	= 20;
+ ulong	srv_n_free_tickets_to_enter = 500;
+diff -r 2bbfde0e0e70 mysql-test/r/information_schema.result
+--- a/mysql-test/r/information_schema.result	Mon Dec 22 00:33:11 2008 -0800
++++ b/mysql-test/r/information_schema.result	Mon Dec 22 00:33:48 2008 -0800
+@@ -59,6 +59,7 @@
+ USER_PRIVILEGES
+ USER_STATISTICS
+ VIEWS
++INNODB_IO_PATTERN
+ columns_priv
+ db
+ func
+@@ -742,7 +743,7 @@
+ CREATE VIEW a1 (t_CRASHME) AS SELECT f1 FROM t_crashme GROUP BY f1;
+ CREATE VIEW a2 AS SELECT t_CRASHME FROM a1;
+ count(*)
+-108
++109
+ drop view a2, a1;
+ drop table t_crashme;
+ select table_schema,table_name, column_name from
+@@ -812,12 +813,13 @@
+ TABLE_PRIVILEGES	TABLE_NAME	select
+ TABLE_STATISTICS	TABLE_NAME	select
+ VIEWS	TABLE_NAME	select
++INNODB_IO_PATTERN	TABLE_NAME	select
+ delete from mysql.user where user='mysqltest_4';
+ delete from mysql.db where user='mysqltest_4';
+ flush privileges;
+ SELECT table_schema, count(*) FROM information_schema.TABLES GROUP BY TABLE_SCHEMA;
+ table_schema	count(*)
+-information_schema	23
++information_schema	24
+ mysql	17
+ create table t1 (i int, j int);
+ create trigger trg1 before insert on t1 for each row
+@@ -1225,6 +1227,7 @@
+ USER_PRIVILEGES	GRANTEE
+ USER_STATISTICS	USER
+ VIEWS	TABLE_SCHEMA
++INNODB_IO_PATTERN	SPACE
+ SELECT t.table_name, c1.column_name
+ FROM information_schema.tables t
+ INNER JOIN
+@@ -1263,6 +1266,7 @@
+ USER_PRIVILEGES	GRANTEE
+ USER_STATISTICS	USER
+ VIEWS	TABLE_SCHEMA
++INNODB_IO_PATTERN	SPACE
+ SELECT MAX(table_name) FROM information_schema.tables;
+ MAX(table_name)
+ VIEWS
+@@ -1337,6 +1341,7 @@
+ COLUMN_PRIVILEGES	information_schema.COLUMN_PRIVILEGES	1
+ INDEX_STATISTICS	information_schema.INDEX_STATISTICS	1
+ INNODB_BUFFER_POOL_CONTENT	information_schema.INNODB_BUFFER_POOL_CONTENT	1
++INNODB_IO_PATTERN	information_schema.INNODB_IO_PATTERN	1
+ KEY_COLUMN_USAGE	information_schema.KEY_COLUMN_USAGE	1
+ PROCESSLIST	information_schema.PROCESSLIST	1
+ PROFILING	information_schema.PROFILING	1
+diff -r 2bbfde0e0e70 mysql-test/r/information_schema_db.result
+--- a/mysql-test/r/information_schema_db.result	Mon Dec 22 00:33:11 2008 -0800
++++ b/mysql-test/r/information_schema_db.result	Mon Dec 22 00:33:48 2008 -0800
+@@ -28,6 +28,7 @@
+ USER_PRIVILEGES
+ USER_STATISTICS
+ VIEWS
++INNODB_IO_PATTERN
+ show tables from INFORMATION_SCHEMA like 'T%';
+ Tables_in_information_schema (T%)
+ TABLES
+diff -r 2bbfde0e0e70 mysql-test/r/mysqlshow.result
+--- a/mysql-test/r/mysqlshow.result	Mon Dec 22 00:33:11 2008 -0800
++++ b/mysql-test/r/mysqlshow.result	Mon Dec 22 00:33:48 2008 -0800
+@@ -102,6 +102,7 @@
+ | USER_PRIVILEGES                       |
+ | USER_STATISTICS                       |
+ | VIEWS                                 |
++| INNODB_IO_PATTERN                     |
+ +---------------------------------------+
+ Database: INFORMATION_SCHEMA
+ +---------------------------------------+
+@@ -130,6 +131,7 @@
+ | USER_PRIVILEGES                       |
+ | USER_STATISTICS                       |
+ | VIEWS                                 |
++| INNODB_IO_PATTERN                     |
+ +---------------------------------------+
+ Wildcard: inf_rmation_schema
+ +--------------------+
+diff -r 2bbfde0e0e70 patch_info/innodb_io_pattern.info
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/patch_info/innodb_io_pattern.info	Mon Dec 22 00:33:48 2008 -0800
+@@ -0,0 +1,8 @@
++File=innodb_io_pattern.patch
++Name=Information schema table of InnoDB IO counts for each datafile pages
++Version=1.0
++Author=Percona <info@percona.com>
++License=GPL
++Comment=INFORMATION_SCHEMA.INNODB_IO_PATTERN
++2008-12-01
++YK: fix for mysql-test
+diff -r 2bbfde0e0e70 sql/ha_innodb.cc
+--- a/sql/ha_innodb.cc	Mon Dec 22 00:33:11 2008 -0800
++++ b/sql/ha_innodb.cc	Mon Dec 22 00:33:48 2008 -0800
+@@ -1569,6 +1569,8 @@
+         pthread_cond_init(&commit_cond, NULL);
+ 	innodb_inited= 1;
+ 
++	buf_io_counter_control();
++
+ 	/* If this is a replication slave and we needed to do a crash recovery,
+ 	set the master binlog position to what InnoDB internally knew about
+ 	how far we got transactions durable inside InnoDB. There is a
+@@ -6527,6 +6529,28 @@
+ }
+ 
+ /****************************************************************************
++Controls the internal hash table for IO pattern tracing
++along innodb_io_pattern_trace value.*/
++
++void
++innodb_io_pattern_control(void)
++/*===========================*/
++{
++	if (innodb_inited) {
++		buf_io_counter_control();
++	}
++}
++
++void
++innodb_io_pattern_clear(void)
++/*=========================*/
++{
++	if (innodb_inited) {
++		buf_io_counter_clear();
++	}
++}
++
++/****************************************************************************
+ Implements the SHOW INNODB STATUS command. Sends the output of the InnoDB
+ Monitor to the client. */
+ 
+diff -r 2bbfde0e0e70 sql/ha_innodb.h
+--- a/sql/ha_innodb.h	Mon Dec 22 00:33:11 2008 -0800
++++ b/sql/ha_innodb.h	Mon Dec 22 00:33:48 2008 -0800
+@@ -240,6 +240,9 @@
+ extern ulong srv_adaptive_checkpoint;
+ extern ulong srv_show_locks_held;
+ extern ulong srv_show_verbose_locks;
++extern ulong srv_io_pattern_trace;
++extern ulong srv_io_pattern_trace_running;
++extern ulong srv_io_pattern_size_limit;
+ }
+ 
+ bool innobase_init(void);
+@@ -266,6 +269,9 @@
+ bool innodb_I_S_buffer_pool_content(THD* thd, TABLE_LIST *tables);
+ bool innodb_mutex_show_status(THD* thd);
+ void innodb_export_status(void);
++
++void innodb_io_pattern_control(void);
++void innodb_io_pattern_clear(void);
+ 
+ void innobase_release_temporary_latches(THD *thd);
+ 
+diff -r 2bbfde0e0e70 sql/lex.h
+--- a/sql/lex.h	Mon Dec 22 00:33:11 2008 -0800
++++ b/sql/lex.h	Mon Dec 22 00:33:48 2008 -0800
+@@ -244,6 +244,7 @@
+   { "INNER",		SYM(INNER_SYM)},
+   { "INNOBASE",		SYM(INNOBASE_SYM)},
+   { "INNODB",		SYM(INNOBASE_SYM)},
++  { "INNODB_IO_PATTERN", SYM(INNODB_IO_PATTERN)},
+   { "INOUT",            SYM(INOUT_SYM)},
+   { "INSENSITIVE",      SYM(INSENSITIVE_SYM)},
+   { "INSERT",		SYM(INSERT)},
+diff -r 2bbfde0e0e70 sql/mysqld.cc
+--- a/sql/mysqld.cc	Mon Dec 22 00:33:11 2008 -0800
++++ b/sql/mysqld.cc	Mon Dec 22 00:33:48 2008 -0800
+@@ -4983,6 +4983,9 @@
+   OPT_INNODB_SYNC_SPIN_LOOPS,
+   OPT_INNODB_CONCURRENCY_TICKETS,
+   OPT_INNODB_THREAD_SLEEP_DELAY,
++  OPT_INNODB_IO_PATTERN_TRACE,
++  OPT_INNODB_IO_PATTERN_TRACE_RUNNING,
++  OPT_INNODB_IO_PATTERN_SIZE_LIMIT,
+   OPT_BDB_CACHE_SIZE,
+   OPT_BDB_LOG_BUFFER_SIZE,
+   OPT_BDB_MAX_LOCK,
+@@ -5382,6 +5385,18 @@
+    "Number of background write I/O threads in InnoDB.",
+    (gptr*) &innobase_write_io_threads, (gptr*) &innobase_write_io_threads,
+    0, GET_LONG, REQUIRED_ARG, 1, 1, 64, 0, 0, 0},
++  {"innodb_io_pattern_trace", OPT_INNODB_IO_PATTERN_TRACE,
++   "Create/Drop the internal hash table for IO pattern tracing.",
++   (gptr*) &srv_io_pattern_trace, (gptr*) &srv_io_pattern_trace,
++   0, GET_ULONG, REQUIRED_ARG, 0, 0, 1, 0, 0, 0},
++  {"innodb_io_pattern_trace_running", OPT_INNODB_IO_PATTERN_TRACE_RUNNING,
++   "Control IO pattern trace running or not.",
++   (gptr*) &srv_io_pattern_trace_running, (gptr*) &srv_io_pattern_trace_running,
++   0, GET_ULONG, REQUIRED_ARG, 0, 0, 1, 0, 0, 0},
++  {"innodb_io_pattern_size_limit", OPT_INNODB_IO_PATTERN_SIZE_LIMIT,
++   "Set max number of counters per data pages. (0 = disable counting).",
++   (gptr*) &srv_io_pattern_size_limit, (gptr*) &srv_io_pattern_size_limit,
++   0, GET_ULONG, REQUIRED_ARG, 0, 0, ULONG_MAX - (1024 * 1024), 0, 0, 0},
+ #endif /* End HAVE_INNOBASE_DB */
+   {"isam", OPT_ISAM, "Obsolete. ISAM storage engine is no longer supported.",
+    (gptr*) &opt_isam, (gptr*) &opt_isam, 0, GET_BOOL, NO_ARG, 0, 0, 0,
+diff -r 2bbfde0e0e70 sql/set_var.cc
+--- a/sql/set_var.cc	Mon Dec 22 00:33:11 2008 -0800
++++ b/sql/set_var.cc	Mon Dec 22 00:33:48 2008 -0800
+@@ -501,6 +501,12 @@
+ sys_var_long_ptr  sys_innodb_show_verbose_locks(
+                                         "innodb_show_verbose_locks",
+                                         &srv_show_verbose_locks);
++sys_var_innodb_io_pattern_trace sys_innodb_io_pattern_trace("innodb_io_pattern_trace",
++                                                            &srv_io_pattern_trace);
++sys_var_long_ptr        sys_innodb_io_pattern_trace_running("innodb_io_pattern_trace_running",
++                                                            &srv_io_pattern_trace_running);
++sys_var_long_ptr        sys_innodb_io_pattern_size_limit("innodb_io_pattern_size_limit",
++                                                         &srv_io_pattern_size_limit);
+ sys_var_const_os_str_ptr sys_innodb_data_file_path("innodb_data_file_path", 
+                                                &innobase_data_file_path);
+ sys_var_const_os_str_ptr sys_innodb_data_home_dir("innodb_data_home_dir", 
+@@ -870,6 +876,9 @@
+   &sys_innodb_adaptive_checkpoint,
+   &sys_innodb_show_locks_held,
+   &sys_innodb_show_verbose_locks,
++  &sys_innodb_io_pattern_trace,
++  &sys_innodb_io_pattern_trace_running,
++  &sys_innodb_io_pattern_size_limit,
+ #endif
+   &sys_trust_routine_creators,
+   &sys_trust_function_creators,
+@@ -1012,6 +1021,9 @@
+   {sys_innodb_adaptive_checkpoint.name, (char*) &sys_innodb_adaptive_checkpoint, SHOW_SYS},
+   {"innodb_read_io_threads", (char*) &innobase_read_io_threads, SHOW_LONG},
+   {"innodb_write_io_threads", (char*) &innobase_write_io_threads, SHOW_LONG},
++  {sys_innodb_io_pattern_trace.name, (char*) &sys_innodb_io_pattern_trace, SHOW_SYS},
++  {sys_innodb_io_pattern_trace_running.name, (char*) &sys_innodb_io_pattern_trace_running, SHOW_SYS},
++  {sys_innodb_io_pattern_size_limit.name, (char*) &sys_innodb_io_pattern_size_limit, SHOW_SYS},
+ #endif
+   {sys_interactive_timeout.name,(char*) &sys_interactive_timeout,   SHOW_SYS},
+   {sys_join_buffer_size.name,   (char*) &sys_join_buffer_size,	    SHOW_SYS},
+@@ -3117,6 +3129,19 @@
+     thd->variables.lc_time_names= global_system_variables.lc_time_names;
+ }
+ 
++#ifdef HAVE_INNOBASE_DB
++bool sys_var_innodb_io_pattern_trace::update(THD *thd, set_var *var)
++{
++  bool ret;
++
++  ret = sys_var_long_ptr_global::update(thd, var);
++
++  innodb_io_pattern_control();
++
++  return ret;
++}
++#endif /* HAVE_INNOBASE_DB */
++
+ /*
+   Functions to update thd->options bits
+ */
+diff -r 2bbfde0e0e70 sql/set_var.h
+--- a/sql/set_var.h	Mon Dec 22 00:33:11 2008 -0800
++++ b/sql/set_var.h	Mon Dec 22 00:33:48 2008 -0800
+@@ -985,6 +985,17 @@
+   virtual void set_default(THD *thd, enum_var_type type);
+ };
+ 
++#ifdef HAVE_INNOBASE_DB
++/* sys_var_innodb_io_pattern_trace */
++class sys_var_innodb_io_pattern_trace :public sys_var_long_ptr
++{
++public:
++  sys_var_innodb_io_pattern_trace(const char *name_arg, ulong *value_ptr_arg)
++    :sys_var_long_ptr(name_arg,value_ptr_arg) {}
++  bool update(THD *thd, set_var *var);
++};
++#endif /* HAVE_INNOBASE_DB */
++
+ /****************************************************************************
+   Classes for parsing of the SET command
+ ****************************************************************************/
+diff -r 2bbfde0e0e70 sql/sql_parse.cc
+--- a/sql/sql_parse.cc	Mon Dec 22 00:33:11 2008 -0800
++++ b/sql/sql_parse.cc	Mon Dec 22 00:33:48 2008 -0800
+@@ -7998,6 +7998,13 @@
+     }
+     pthread_mutex_unlock(&LOCK_global_user_client_stats);
+   }
++#ifdef HAVE_INNOBASE_DB
++ if (options & REFRESH_INNODB_IO_PATTERN)
++ {
++   tmp_write_to_binlog= 0;
++   innodb_io_pattern_clear();
++ }
++#endif /* HAVE_INNOBASE_DB */
+  *write_to_binlog= tmp_write_to_binlog;
+  return result;
+ }
+diff -r 2bbfde0e0e70 sql/sql_show.cc
+--- a/sql/sql_show.cc	Mon Dec 22 00:33:11 2008 -0800
++++ b/sql/sql_show.cc	Mon Dec 22 00:33:48 2008 -0800
+@@ -32,6 +32,17 @@
+ #ifdef HAVE_INNOBASE_DB
+ #include "ha_innodb.h"
+ #endif
++
++#ifdef HAVE_INNOBASE_DB
++#define INSIDE_HA_INNOBASE_CC
++extern "C" {
++#include "srv0srv.h"
++#include "buf0buf.h"
++#include "dict0dict.h"
++}
++/* We need to undef it in InnoDB */
++#undef byte
++#endif /* HAVE_INNOBASE_DB */
+ 
+ #ifndef NO_EMBEDDED_ACCESS_CHECKS
+ static const char *grant_names[]={
+@@ -4074,6 +4085,67 @@
+   DBUG_RETURN(res);
+ }
+ 
++int innodb_io_pattern_fill_table(THD *thd, TABLE_LIST *tables, COND *cond)
++{
++  TABLE *table= (TABLE *) tables->table;
++
++  buf_io_counter_t* io_counter;
++  dict_index_t* index;
++
++  DBUG_ENTER("innodb_io_pattern_fill_table");
++  int returnable= 0;
++
++  /* We cannot use inline functions of InnoDB here */
++
++  /* !!!!!ATTENTION!!!!!: This function is not protected by mutex for performance.     */
++  /* Don't use "DROP TABLE innodb_io_pattern" and INFORMATION_SCHEMA.INNODB_IO_PATTERN */
++  /* at the same time as possible.                                                     */
++
++  if (srv_io_pattern) {
++  for (ulint n=0; n < buf_pool->io_counter_hash->n_cells; n++) {
++    if (!srv_io_pattern)
++      goto end_func;
++
++    io_counter = (buf_io_counter_t*)(buf_pool->io_counter_hash->array + n)->node;
++    while (io_counter) {
++      if (!srv_io_pattern)
++        goto end_func;
++
++      if (dict_sys != NULL) {
++        dulint id;
++        id.high = 0;
++        id.low = io_counter->index_id;
++        index = dict_index_find_on_id_low(id);
++      } else {
++        index = NULL;
++      }
++
++      table->field[0]->store(io_counter->space);
++      table->field[1]->store(io_counter->offset);
++      table->field[2]->store(io_counter->index_id);
++      if (index != NULL) {
++        table->field[3]->store(index->table_name,strlen(index->table_name),system_charset_info);
++        table->field[4]->store(index->name,strlen(index->name),system_charset_info);
++      } else {
++        table->field[3]->store("",0,system_charset_info);
++        table->field[4]->store("",0,system_charset_info);
++      }
++      table->field[5]->store(io_counter->n_read);
++      table->field[6]->store(io_counter->n_write);
++      if (schema_table_store_record(thd, table))
++      {
++        returnable= 1;
++        goto end_func;
++      }
++      io_counter = io_counter->hash;
++    }
++  }
++  }
++
++ end_func:
++  DBUG_RETURN(returnable);
++}
++
+ /*
+   Find schema_tables elment by name
+ 
+@@ -4880,6 +4952,19 @@
+   {0, 0, MYSQL_TYPE_STRING, 0, 0, 0}
+ };
+ 
++#ifdef HAVE_INNOBASE_DB
++ST_FIELD_INFO innodb_io_pattern_field_info[]=
++{
++  {"SPACE", 11, MYSQL_TYPE_LONG, 0, 0, "space_id"},
++  {"OFFSET", 11, MYSQL_TYPE_LONG, 0, 0, "offset"},
++  {"INDEX_ID", 11, MYSQL_TYPE_LONG, 0, 0, "index id"},
++  {"TABLE_NAME", 32, MYSQL_TYPE_STRING, 0, 0, "table name"},
++  {"INDEX_NAME", 32, MYSQL_TYPE_STRING, 0, 0, "index name"},
++  {"N_READ", 11, MYSQL_TYPE_LONG, 0, 0, "read ios"},
++  {"N_WRITE", 11, MYSQL_TYPE_LONG, 0, 0, "write ios"},
++  {0, 0, MYSQL_TYPE_STRING, 0, 0, 0}
++};
++#endif
+ 
+ ST_FIELD_INFO variables_fields_info[]=
+ {
+@@ -5055,6 +5140,10 @@
+    make_old_format, 0, -1, -1, 1},
+   {"VIEWS", view_fields_info, create_schema_table, 
+     get_all_tables, 0, get_schema_views_record, 1, 2, 0},
++#ifdef HAVE_INNOBASE_DB
++  {"INNODB_IO_PATTERN", innodb_io_pattern_field_info, create_schema_table,
++    innodb_io_pattern_fill_table, 0, 0, -1, -1, 0},
++#endif
+   {0, 0, 0, 0, 0, 0, 0, 0, 0}
+ };
+ 
+diff -r 2bbfde0e0e70 sql/sql_yacc.yy
+--- a/sql/sql_yacc.yy	Mon Dec 22 00:33:11 2008 -0800
++++ b/sql/sql_yacc.yy	Mon Dec 22 00:33:48 2008 -0800
+@@ -685,6 +685,7 @@
+ %token  INFILE
+ %token  INNER_SYM
+ %token  INNOBASE_SYM
++%token  INNODB_IO_PATTERN
+ %token  INOUT_SYM
+ %token  INSENSITIVE_SYM
+ %token  INSERT
+@@ -8541,6 +8542,7 @@
+         | MASTER_SYM    { Lex->type|= REFRESH_MASTER; }
+ 	| DES_KEY_FILE	{ Lex->type|= REFRESH_DES_KEY_FILE; }
+  	| RESOURCES     { Lex->type|= REFRESH_USER_RESOURCES; }
++ 	| INNODB_IO_PATTERN { Lex->type|= REFRESH_INNODB_IO_PATTERN; }
+  	| CLIENT_STATS_SYM { Lex->type|= REFRESH_CLIENT_STATS; }
+  	| USER_STATS_SYM { Lex->type|= REFRESH_USER_STATS; }
+  	| TABLE_STATS_SYM { Lex->type|= REFRESH_TABLE_STATS; }
+@@ -9594,6 +9596,7 @@
+ 	| ISOLATION		{}
+ 	| ISSUER_SYM		{}
+ 	| INNOBASE_SYM		{}
++	| INNODB_IO_PATTERN	{}
+ 	| INSERT_METHOD		{}
+ 	| IO_SYM                {}
+ 	| IPC_SYM               {}
diff --git a/1013_innodb_fsync_source-percona-5.0.75-b12.patch b/1013_innodb_fsync_source-percona-5.0.75-b12.patch
new file mode 100644
index 0000000..637a7d6
--- /dev/null
+++ b/1013_innodb_fsync_source-percona-5.0.75-b12.patch
@@ -0,0 +1,594 @@
+diff -r 61031ebb48ce innobase/buf/buf0flu.c
+--- a/innobase/buf/buf0flu.c	Mon Nov 03 05:07:46 2008 -0800
++++ b/innobase/buf/buf0flu.c	Mon Nov 03 05:07:56 2008 -0800
+@@ -341,7 +341,7 @@
+ 
+ 	/* Now flush the doublewrite buffer data to disk */
+ 
+-	fil_flush(TRX_SYS_SPACE);
++	fil_flush(TRX_SYS_SPACE, FLUSH_FROM_DIRTY_BUFFER);
+ 
+ 	/* We know that the writes have been flushed to disk now
+ 	and in recovery we will find them in the doublewrite buffer
+@@ -381,7 +381,7 @@
+ 
+ 	/* Now we flush the data to disk (for example, with fsync) */
+ 
+-	fil_flush_file_spaces(FIL_TABLESPACE);
++	fil_flush_file_spaces(FIL_TABLESPACE, FLUSH_FROM_DIRTY_BUFFER);
+ 
+ 	/* We can now reuse the doublewrite memory buffer: */
+ 
+@@ -501,7 +501,8 @@
+ 	}
+ #else
+ 	/* Force the log to the disk before writing the modified block */
+-	log_write_up_to(block->newest_modification, LOG_WAIT_ALL_GROUPS, TRUE);
++	log_write_up_to(block->newest_modification, LOG_WAIT_ALL_GROUPS, TRUE,
++		LOG_WRITE_FROM_DIRTY_BUFFER);
+ #endif	
+ 	buf_flush_init_for_writing(block->frame, block->newest_modification,
+ 						block->space, block->offset);
+diff -r 61031ebb48ce innobase/fil/fil0fil.c
+--- a/innobase/fil/fil0fil.c	Mon Nov 03 05:07:46 2008 -0800
++++ b/innobase/fil/fil0fil.c	Mon Nov 03 05:07:56 2008 -0800
+@@ -245,6 +245,7 @@
+ 					request */
+ 	UT_LIST_BASE_NODE_T(fil_space_t) space_list;
+ 					/* list of all file spaces */
++	ulint flush_types[FLUSH_FROM_NUMBER];/* calls to fil_flush by caller */
+ };
+ 
+ /* The tablespace memory cache. This variable is NULL before the module is
+@@ -849,7 +850,7 @@
+ 	/* Flush tablespaces so that we can close modified files in the LRU
+ 	list */
+ 
+-	fil_flush_file_spaces(FIL_TABLESPACE);		
++	fil_flush_file_spaces(FIL_TABLESPACE, FLUSH_FROM_OTHER);		
+ 
+ 	count++;
+ 
+@@ -1309,7 +1310,10 @@
+ 
+ 	UT_LIST_INIT(system->unflushed_spaces);
+ 	UT_LIST_INIT(system->space_list);
+-
++	{
++		int x;
++		for (x = 0; x < FLUSH_FROM_NUMBER; ++x) system->flush_types[x] = 0;
++	}
+ 	return(system);
+ }
+ 
+@@ -1437,6 +1441,23 @@
+ 	}
+ 
+ 	mutex_exit(&(system->mutex));
++}
++
++/********************************************************************
++Prints internal counters */
++
++void
++fil_print(FILE *file)
++{
++	fprintf(file,
++		"fsync callers: %lu buffer pool, %lu other, %lu checkpoint, "
++		"%lu log aio, %lu log sync, %lu archive\n",
++		fil_system->flush_types[FLUSH_FROM_DIRTY_BUFFER],
++		fil_system->flush_types[FLUSH_FROM_OTHER],
++		fil_system->flush_types[FLUSH_FROM_CHECKPOINT],
++		fil_system->flush_types[FLUSH_FROM_LOG_IO_COMPLETE],
++		fil_system->flush_types[FLUSH_FROM_LOG_WRITE_UP_TO],
++		fil_system->flush_types[FLUSH_FROM_ARCHIVE]);
+ }
+ 
+ /********************************************************************
+@@ -2256,7 +2277,7 @@
+ 
+ 		os_thread_sleep(20000);
+ 
+-		fil_flush(id);
++		fil_flush(id, FLUSH_FROM_OTHER);
+ 
+ 		goto retry;
+ 
+@@ -3574,7 +3595,7 @@
+                                         size_after_extend, *actual_size); */
+ 	mutex_exit(&(system->mutex));	
+ 
+-	fil_flush(space_id);
++	fil_flush(space_id, FLUSH_FROM_OTHER);
+ 
+ 	return(success);
+ }
+@@ -4166,8 +4187,9 @@
+ void
+ fil_flush(
+ /*======*/
+-	ulint	space_id)	/* in: file space id (this can be a group of
++	ulint	space_id,	/* in: file space id (this can be a group of
+ 				log files or a tablespace of the database) */
++	flush_from_type flush_type)/* in: identifies the caller */
+ {
+ 	fil_system_t*	system	= fil_system;
+ 	fil_space_t*	space;
+@@ -4176,7 +4198,7 @@
+ 	ib_longlong	old_mod_counter;
+ 
+ 	mutex_enter(&(system->mutex));
+-	
++	system->flush_types[flush_type]++;	
+ 	HASH_SEARCH(hash, system->spaces, space_id, space,
+ 							space->id == space_id);
+ 	if (!space || space->is_being_deleted) {
+@@ -4281,7 +4303,8 @@
+ void
+ fil_flush_file_spaces(
+ /*==================*/
+-	ulint	purpose)	/* in: FIL_TABLESPACE, FIL_LOG */
++	ulint	purpose,	/* in: FIL_TABLESPACE, FIL_LOG */
++	flush_from_type flush_type)/* in: identifies the caller */
+ {
+ 	fil_system_t*	system	= fil_system;
+ 	fil_space_t*	space;
+@@ -4322,7 +4345,7 @@
+ 	a non-existing space id. */
+ 	for (i = 0; i < n_space_ids; i++) {
+ 
+-		fil_flush(space_ids[i]);
++		fil_flush(space_ids[i], flush_type);
+ 	}
+ 
+ 	mem_free(space_ids);
+diff -r 61031ebb48ce innobase/include/fil0fil.h
+--- a/innobase/include/fil0fil.h	Mon Nov 03 05:07:46 2008 -0800
++++ b/innobase/include/fil0fil.h	Mon Nov 03 05:07:56 2008 -0800
+@@ -197,6 +197,13 @@
+ fil_init(
+ /*=====*/
+ 	ulint	max_n_open);	/* in: max number of open files */
++/********************************************************************
++ * Prints internal counters. */
++
++void
++fil_print(
++	/*=====*/
++	FILE* file); /* in: output stream */
+ /***********************************************************************
+ Opens all log files and system tablespace data files. They stay open until the
+ database server shutdown. This should be called at a server startup after the
+@@ -621,14 +628,26 @@
+ 	ulint	segment);	/* in: the number of the segment in the aio
+ 				array to wait for */ 
+ /**************************************************************************
++Identifies the caller of fil_flush. */
++typedef enum {
++	FLUSH_FROM_DIRTY_BUFFER,
++	FLUSH_FROM_OTHER,
++	FLUSH_FROM_CHECKPOINT,
++	FLUSH_FROM_LOG_IO_COMPLETE,
++	FLUSH_FROM_LOG_WRITE_UP_TO,
++	FLUSH_FROM_ARCHIVE,
++	FLUSH_FROM_NUMBER
++} flush_from_type;
++/**************************************************************************
+ Flushes to disk possible writes cached by the OS. If the space does not exist
+ or is being dropped, does not do anything. */
+ 
+ void
+ fil_flush(
+ /*======*/
+-	ulint	space_id);	/* in: file space id (this can be a group of
++	ulint	space_id, 	/* in: file space id (this can be a group of
+ 				log files or a tablespace of the database) */
++	flush_from_type flush_type);/* in: identifies the caller */
+ /**************************************************************************
+ Flushes to disk writes in file spaces of the given type possibly cached by
+ the OS. */
+@@ -636,7 +655,8 @@
+ void
+ fil_flush_file_spaces(
+ /*==================*/
+-	ulint	purpose);	/* in: FIL_TABLESPACE, FIL_LOG */
++	ulint	purpose, 	/* in: FIL_TABLESPACE, FIL_LOG */
++	flush_from_type flush_type);/* in: identifies the caller */
+ /**********************************************************************
+ Checks the consistency of the tablespace cache. */
+ 
+diff -r 61031ebb48ce innobase/include/log0log.h
+--- a/innobase/include/log0log.h	Mon Nov 03 05:07:46 2008 -0800
++++ b/innobase/include/log0log.h	Mon Nov 03 05:07:56 2008 -0800
+@@ -146,6 +146,22 @@
+ log_io_complete(
+ /*============*/
+ 	log_group_t*	group);	/* in: log group */
++
++/**********************************************************
++Describes the caller of log_write_up_to. */
++
++typedef enum {
++	LOG_WRITE_FROM_DIRTY_BUFFER,
++	LOG_WRITE_FROM_BACKGROUND_SYNC,
++	LOG_WRITE_FROM_BACKGROUND_ASYNC,
++	LOG_WRITE_FROM_INTERNAL,
++	LOG_WRITE_FROM_CHECKPOINT_SYNC,
++	LOG_WRITE_FROM_CHECKPOINT_ASYNC,
++	LOG_WRITE_FROM_LOG_ARCHIVE,
++	LOG_WRITE_FROM_COMMIT_SYNC,
++	LOG_WRITE_FROM_COMMIT_ASYNC,
++	LOG_WRITE_FROM_NUMBER
++} log_sync_type;
+ /**********************************************************
+ This function is called, e.g., when a transaction wants to commit. It checks
+ that the log has been written to the log file up to the last log entry written
+@@ -159,14 +175,21 @@
+ 			be written, ut_dulint_max if not specified */
+ 	ulint	wait,	/* in: LOG_NO_WAIT, LOG_WAIT_ONE_GROUP,
+ 			or LOG_WAIT_ALL_GROUPS */
+-	ibool	flush_to_disk);
+-			/* in: TRUE if we want the written log also to be
+-			flushed to disk */
++	ibool	flush_to_disk,
++	/* in: TRUE if we want the written log also to be flushed to disk */
++	log_sync_type caller);/* in: identifies the caller */
+ /********************************************************************
+ Does a syncronous flush of the log buffer to disk. */
+ 
+ void
+ log_buffer_flush_to_disk(void);
++/*==========================*/
++/********************************************************************
++Flushes the log buffer. Forces it to disk depending on the value of
++the configuration parameter innodb_flush_log_at_trx_commit. */
++
++void
++log_buffer_flush_maybe_sync(void);
+ /*==========================*/
+ /********************************************************************
+ Advances the smallest lsn for which there are unflushed dirty blocks in the
+@@ -744,6 +767,12 @@
+ 					AND flushed to disk */
+ 	ulint		n_pending_writes;/* number of currently pending flushes
+ 					or writes */
++	ulint           log_sync_callers[LOG_WRITE_FROM_NUMBER];
++		/* counts calls to log_write_up_to */
++	ulint           log_sync_syncers[LOG_WRITE_FROM_NUMBER];
++		/* counts calls to log_write_up_to when log file is sync'd */
++	ulint           n_syncs;        /* number of fsyncs done for log file */
++	ulint           n_checkpoints;  /* number of calls to log_checkpoint */
+ 	/* NOTE on the 'flush' in names of the fields below: starting from
+ 	4.0.14, we separate the write of the log file and the actual fsync()
+ 	or other method to flush it to disk. The names below shhould really
+diff -r 61031ebb48ce innobase/log/log0log.c
+--- a/innobase/log/log0log.c	Mon Nov 03 05:07:46 2008 -0800
++++ b/innobase/log/log0log.c	Mon Nov 03 05:07:56 2008 -0800
+@@ -782,6 +782,15 @@
+ 	log_sys->written_to_all_lsn = log_sys->lsn;
+ 	
+ 	log_sys->n_pending_writes = 0;
++	{
++		int x;
++		for (x = 0; x < LOG_WRITE_FROM_NUMBER; ++x) {
++			log_sys->log_sync_callers[x] = 0;
++			log_sys->log_sync_syncers[x] = 0;
++		}
++	}
++	log_sys->n_syncs = 0;
++        log_sys->n_checkpoints = 0;
+ 
+ 	log_sys->no_flush_event = os_event_create(NULL);
+ 
+@@ -1066,7 +1075,7 @@
+ 		if (srv_unix_file_flush_method != SRV_UNIX_O_DSYNC
+ 		   && srv_unix_file_flush_method != SRV_UNIX_NOSYNC) {
+ 		
+-		        fil_flush(group->space_id);
++			fil_flush(group->space_id, FLUSH_FROM_LOG_IO_COMPLETE);
+ 		}
+ 
+ #ifdef UNIV_DEBUG
+@@ -1088,7 +1097,7 @@
+ 	    && srv_unix_file_flush_method != SRV_UNIX_NOSYNC
+ 	    && srv_flush_log_at_trx_commit != 2) {
+ 
+-	        fil_flush(group->space_id);
++		fil_flush(group->space_id, FLUSH_FROM_LOG_IO_COMPLETE);
+ 	}
+ 
+ 	mutex_enter(&(log_sys->mutex));
+@@ -1303,9 +1312,10 @@
+ 			be written, ut_dulint_max if not specified */
+ 	ulint	wait,	/* in: LOG_NO_WAIT, LOG_WAIT_ONE_GROUP,
+ 			or LOG_WAIT_ALL_GROUPS */
+-	ibool	flush_to_disk)
++	ibool	flush_to_disk,
+ 			/* in: TRUE if we want the written log also to be
+ 			flushed to disk */
++	log_sync_type caller) /* in: identifies caller */
+ {
+ 	log_group_t*	group;
+ 	ulint		start_offset;
+@@ -1315,6 +1325,7 @@
+ 	ulint		loop_count;
+ 	ulint		unlock;
+ 
++	log_sys->log_sync_callers[caller]++;
+ 	if (recv_no_ibuf_operations) {
+ 		/* Recovery is running and no operations on the log files are
+ 		allowed yet (the variable name .._no_ibuf_.. is misleading) */
+@@ -1465,13 +1476,17 @@
+ 		so we have also flushed to disk what we have written */
+ 
+ 		log_sys->flushed_to_disk_lsn = log_sys->write_lsn;
++		log_sys->n_syncs++;
++		log_sys->log_sync_syncers[caller]++;
+ 
+ 	} else if (flush_to_disk) {
+ 
+ 		group = UT_LIST_GET_FIRST(log_sys->log_groups);
+ 
+-	        fil_flush(group->space_id);
++		fil_flush(group->space_id, FLUSH_FROM_LOG_WRITE_UP_TO);
+ 		log_sys->flushed_to_disk_lsn = log_sys->write_lsn;
++		log_sys->n_syncs++;
++		log_sys->log_sync_syncers[caller]++;
+ 	}
+ 
+ 	mutex_enter(&(log_sys->mutex));
+@@ -1520,7 +1535,8 @@
+ 
+ 	mutex_exit(&(log_sys->mutex));
+ 
+-	log_write_up_to(lsn, LOG_WAIT_ALL_GROUPS, TRUE);
++	log_write_up_to(lsn, LOG_WAIT_ALL_GROUPS, TRUE,
++                        LOG_WRITE_FROM_BACKGROUND_SYNC);
+ }
+ 
+ /********************************************************************
+@@ -1551,7 +1567,7 @@
+ 	mutex_exit(&(log->mutex));
+ 
+ 	if (do_flush) {
+-		log_write_up_to(lsn, LOG_NO_WAIT, FALSE);
++		log_write_up_to(lsn, LOG_NO_WAIT, FALSE, LOG_WRITE_FROM_INTERNAL);
+ 	}
+ }
+ 
+@@ -1921,11 +1937,11 @@
+ 	}
+ 
+ 	if (srv_unix_file_flush_method != SRV_UNIX_NOSYNC) {
+-	        fil_flush_file_spaces(FIL_TABLESPACE);
++		fil_flush_file_spaces(FIL_TABLESPACE, FLUSH_FROM_CHECKPOINT);
+ 	}
+ 
+ 	mutex_enter(&(log_sys->mutex));
+-
++	log_sys->n_checkpoints++;
+ 	oldest_lsn = log_buf_pool_get_oldest_modification();
+ 
+ 	mutex_exit(&(log_sys->mutex));
+@@ -1938,7 +1954,8 @@
+ 	write-ahead-logging algorithm ensures that the log has been flushed
+ 	up to oldest_lsn. */
+ 
+-	log_write_up_to(oldest_lsn, LOG_WAIT_ALL_GROUPS, TRUE);
++	log_write_up_to(oldest_lsn, LOG_WAIT_ALL_GROUPS, TRUE,
++		LOG_WRITE_FROM_CHECKPOINT_SYNC);
+ 
+ 	mutex_enter(&(log_sys->mutex));
+ 
+@@ -2566,7 +2583,7 @@
+ 
+ 	mutex_exit(&(log_sys->mutex));
+ 
+-	fil_flush(group->archive_space_id);
++	fil_flush(group->archive_space_id, FLUSH_FROM_ARCHIVE);
+ 	
+ 	mutex_enter(&(log_sys->mutex));
+ 	
+@@ -2647,7 +2664,8 @@
+ 
+ 		mutex_exit(&(log_sys->mutex));
+ 	
+-		log_write_up_to(limit_lsn, LOG_WAIT_ALL_GROUPS, TRUE);
++		log_write_up_to(limit_lsn, LOG_WAIT_ALL_GROUPS, TRUE,
++			LOG_WRITE_FROM_LOG_ARCHIVE);
+ 
+ 		calc_new_limit = FALSE;
+ 
+@@ -3184,8 +3202,8 @@
+ 	}
+ 	mutex_exit(&kernel_mutex);
+ 
+-	fil_flush_file_spaces(FIL_TABLESPACE);
+-	fil_flush_file_spaces(FIL_LOG);
++	fil_flush_file_spaces(FIL_TABLESPACE, FLUSH_FROM_OTHER);
++	fil_flush_file_spaces(FIL_LOG, FLUSH_FROM_OTHER);
+ 
+ 	/* The call fil_write_flushed_lsn_to_data_files() will pass the buffer
+ 	pool: therefore it is essential that the buffer pool has been
+@@ -3218,7 +3236,7 @@
+ 
+ 		fil_write_flushed_lsn_to_data_files(lsn, arch_log_no);
+ 
+-	fil_flush_file_spaces(FIL_TABLESPACE);
++	fil_flush_file_spaces(FIL_TABLESPACE, FLUSH_FROM_OTHER);
+ 
+ 	fil_close_all_files();
+ 
+@@ -3331,15 +3349,45 @@
+ 	time_elapsed = 0.001 + difftime(current_time,
+ 					log_sys->last_printout_time);
+ 	fprintf(file,
+-	"%lu pending log writes, %lu pending chkp writes\n"
+-	"%lu log i/o's done, %.2f log i/o's/second\n",
+-	(ulong) log_sys->n_pending_writes,
+-	(ulong) log_sys->n_pending_checkpoint_writes,
+-	(ulong) log_sys->n_log_ios,
+-	((log_sys->n_log_ios - log_sys->n_log_ios_old) / time_elapsed));
++		"%lu pending log writes, %lu pending chkp writes\n"
++		"%lu log i/o's done, %.2f log i/o's/second, %lu syncs, %lu checkpoints\n",
++		(ulong) log_sys->n_pending_writes,
++		(ulong) log_sys->n_pending_checkpoint_writes,
++		(ulong) log_sys->n_log_ios,
++		(log_sys->n_log_ios - log_sys->n_log_ios_old) / time_elapsed,
++		log_sys->n_syncs,
++		log_sys->n_checkpoints);
+ 
+ 	log_sys->n_log_ios_old = log_sys->n_log_ios;
+ 	log_sys->last_printout_time = current_time;
++
++	fprintf(file,
++		"log sync callers: %lu buffer pool, background %lu sync and %lu async, "
++		"%lu internal, checkpoint %lu sync and %lu async, %lu archive, "
++		"commit %lu sync and %lu async\n",
++		log_sys->log_sync_callers[LOG_WRITE_FROM_DIRTY_BUFFER],
++		log_sys->log_sync_callers[LOG_WRITE_FROM_BACKGROUND_SYNC],
++		log_sys->log_sync_callers[LOG_WRITE_FROM_BACKGROUND_ASYNC],
++		log_sys->log_sync_callers[LOG_WRITE_FROM_INTERNAL],
++		log_sys->log_sync_callers[LOG_WRITE_FROM_CHECKPOINT_SYNC],
++		log_sys->log_sync_callers[LOG_WRITE_FROM_CHECKPOINT_ASYNC],
++		log_sys->log_sync_callers[LOG_WRITE_FROM_LOG_ARCHIVE],
++		log_sys->log_sync_callers[LOG_WRITE_FROM_COMMIT_SYNC],
++		log_sys->log_sync_callers[LOG_WRITE_FROM_COMMIT_ASYNC]);
++
++	fprintf(file,
++		"log sync syncers: %lu buffer pool, background %lu sync and %lu async, "
++		"%lu internal, checkpoint %lu sync and %lu async, %lu archive, "
++		"commit %lu sync and %lu async\n",
++		log_sys->log_sync_syncers[LOG_WRITE_FROM_DIRTY_BUFFER],
++		log_sys->log_sync_syncers[LOG_WRITE_FROM_BACKGROUND_SYNC],
++		log_sys->log_sync_syncers[LOG_WRITE_FROM_BACKGROUND_ASYNC],
++		log_sys->log_sync_syncers[LOG_WRITE_FROM_INTERNAL],
++		log_sys->log_sync_syncers[LOG_WRITE_FROM_CHECKPOINT_SYNC],
++		log_sys->log_sync_syncers[LOG_WRITE_FROM_CHECKPOINT_ASYNC],
++		log_sys->log_sync_syncers[LOG_WRITE_FROM_LOG_ARCHIVE],
++		log_sys->log_sync_syncers[LOG_WRITE_FROM_COMMIT_SYNC],
++		log_sys->log_sync_syncers[LOG_WRITE_FROM_COMMIT_ASYNC]);
+ 
+ 	mutex_exit(&(log_sys->mutex));
+ }
+diff -r 61031ebb48ce innobase/srv/srv0srv.c
+--- a/innobase/srv/srv0srv.c	Mon Nov 03 05:07:46 2008 -0800
++++ b/innobase/srv/srv0srv.c	Mon Nov 03 05:07:56 2008 -0800
+@@ -1638,6 +1638,12 @@
+ 		(ulong)time_elapsed);
+ 
+ 	fputs("----------\n"
++               "BACKGROUND THREAD\n"
++               "----------\n", file);
++        fil_print(file);
++
++
++	fputs("----------\n"
+ 		"SEMAPHORES\n"
+ 		"----------\n", file);
+ 	sync_print(file);
+diff -r 61031ebb48ce innobase/trx/trx0sys.c
+--- a/innobase/trx/trx0sys.c	Mon Nov 03 05:07:46 2008 -0800
++++ b/innobase/trx/trx0sys.c	Mon Nov 03 05:07:56 2008 -0800
+@@ -511,7 +511,7 @@
+ 		page += UNIV_PAGE_SIZE;
+ 	}
+ 
+-	fil_flush_file_spaces(FIL_TABLESPACE);
++	fil_flush_file_spaces(FIL_TABLESPACE, FLUSH_FROM_OTHER);
+ 	
+ leave_func:
+ 	ut_free(unaligned_read_buf);
+diff -r 61031ebb48ce innobase/trx/trx0trx.c
+--- a/innobase/trx/trx0trx.c	Mon Nov 03 05:07:46 2008 -0800
++++ b/innobase/trx/trx0trx.c	Mon Nov 03 05:07:56 2008 -0800
+@@ -916,19 +916,21 @@
+                         if (srv_unix_file_flush_method == SRV_UNIX_NOSYNC) {
+                              	/* Write the log but do not flush it to disk */
+ 
+-                               	log_write_up_to(lsn, LOG_WAIT_ONE_GROUP,
+-									FALSE);
++                               	log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, FALSE,
++                                                LOG_WRITE_FROM_COMMIT_ASYNC);
+                         } else {
+                                	/* Write the log to the log files AND flush
+                                	them to disk */
+ 
+-                               	log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, TRUE);
++                               	log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, TRUE,
++                                                LOG_WRITE_FROM_COMMIT_SYNC);
+                         }
+                 } else if (srv_flush_log_at_trx_commit == 2) {
+ 
+                         /* Write the log but do not flush it to disk */
+ 
+-                        log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, FALSE);
++                        log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, FALSE,
++                                        LOG_WRITE_FROM_COMMIT_ASYNC);
+                 } else {
+                         ut_error;
+                 }
+@@ -1659,18 +1661,21 @@
+                 if (srv_unix_file_flush_method == SRV_UNIX_NOSYNC) {
+                         /* Write the log but do not flush it to disk */
+ 
+-                        log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, FALSE);
++                        log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, FALSE,
++                                        LOG_WRITE_FROM_COMMIT_ASYNC);
+                 } else {
+                         /* Write the log to the log files AND flush them to
+                         disk */
+ 
+-                        log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, TRUE);
++                        log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, TRUE,
++                                        LOG_WRITE_FROM_COMMIT_SYNC);
+                 }
+         } else if (srv_flush_log_at_trx_commit == 2) {
+ 
+                 /* Write the log but do not flush it to disk */
+ 
+-                log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, FALSE);
++                log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, FALSE,
++                                LOG_WRITE_FROM_COMMIT_ASYNC);
+         } else {
+                 ut_error;
+         }
+@@ -1906,19 +1911,21 @@
+                    	if (srv_unix_file_flush_method == SRV_UNIX_NOSYNC) {
+                         	/* Write the log but do not flush it to disk */
+ 
+-                        	log_write_up_to(lsn, LOG_WAIT_ONE_GROUP,
+-								FALSE);
++                        	log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, FALSE,
++                                          LOG_WRITE_FROM_COMMIT_ASYNC);
+                         } else {
+                                	/* Write the log to the log files AND flush
+                                	them to disk */
+ 
+-                               	log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, TRUE);
++                               	log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, TRUE,
++                                                LOG_WRITE_FROM_COMMIT_SYNC);
+                         }
+                 } else if (srv_flush_log_at_trx_commit == 2) {
+ 
+                         /* Write the log but do not flush it to disk */
+ 
+-                        log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, FALSE);
++                        log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, FALSE,
++                                        LOG_WRITE_FROM_COMMIT_ASYNC);
+                 } else {
+                         ut_error;
+                 }
+diff -r 61031ebb48ce patch_info/innodb_fsync_source.info
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/patch_info/innodb_fsync_source.info	Mon Nov 03 05:07:56 2008 -0800
+@@ -0,0 +1,9 @@
++File=innodb_fsync_source.patch
++Name=Information of fsync callers in InnoDB
++Version=1.0
++Author=Google
++License=GPL
++Comment=
++ChangeLog=
++2008-11-01 
++VT: Initial porting
diff --git a/1100_split_buf_pool_mutex_fixed_optimistic_safe-percona-5.0.75-b12.patch b/1100_split_buf_pool_mutex_fixed_optimistic_safe-percona-5.0.75-b12.patch
new file mode 100644
index 0000000..016d667
--- /dev/null
+++ b/1100_split_buf_pool_mutex_fixed_optimistic_safe-percona-5.0.75-b12.patch
@@ -0,0 +1,1305 @@
+diff -r 2e0c46e78b50 innobase/buf/buf0buf.c
+--- a/innobase/buf/buf0buf.c	Mon Dec 22 00:33:53 2008 -0800
++++ b/innobase/buf/buf0buf.c	Mon Dec 22 00:33:59 2008 -0800
+@@ -548,6 +548,19 @@
+ 	mutex_create(&(buf_pool->mutex));
+ 	mutex_set_level(&(buf_pool->mutex), SYNC_BUF_POOL);
+ 
++	mutex_create(&(buf_pool->flush_list_mutex));
++	mutex_create(&(buf_pool->LRU_mutex));
++	mutex_create(&(buf_pool->free_mutex));
++	mutex_create(&(buf_pool->hash_mutex));
++	mutex_set_level(&(buf_pool->flush_list_mutex), SYNC_NO_ORDER_CHECK);
++	mutex_set_level(&(buf_pool->LRU_mutex), SYNC_NO_ORDER_CHECK);
++	mutex_set_level(&(buf_pool->free_mutex), SYNC_NO_ORDER_CHECK);
++	mutex_set_level(&(buf_pool->hash_mutex), SYNC_NO_ORDER_CHECK);
++
++	mutex_enter(&(buf_pool->LRU_mutex));
++	mutex_enter(&(buf_pool->flush_list_mutex));
++	mutex_enter(&(buf_pool->free_mutex));
++	mutex_enter(&(buf_pool->hash_mutex));
+ 	mutex_enter(&(buf_pool->mutex));
+ 
+ 	if (srv_use_awe) {
+@@ -723,6 +736,10 @@
+ 		block->in_free_list = TRUE;
+ 	}
+ 
++	mutex_exit(&(buf_pool->LRU_mutex));
++	mutex_exit(&(buf_pool->flush_list_mutex));
++	mutex_exit(&(buf_pool->free_mutex));
++	mutex_exit(&(buf_pool->hash_mutex));
+ 	mutex_exit(&(buf_pool->mutex));
+ 
+ 	if (srv_use_adaptive_hash_indexes) {
+@@ -859,12 +876,12 @@
+ 	if (buf_pool->freed_page_clock >= block->freed_page_clock 
+ 				+ 1 + (buf_pool->curr_size / 4)) {
+ 
+-		mutex_enter(&buf_pool->mutex);
++		mutex_enter(&(buf_pool->LRU_mutex));
+ 		/* There has been freeing activity in the LRU list:
+ 		best to move to the head of the LRU list */
+ 
+ 		buf_LRU_make_block_young(block);
+-		mutex_exit(&buf_pool->mutex);
++		mutex_exit(&(buf_pool->LRU_mutex));
+ 	}
+ }
+ 
+@@ -880,7 +897,7 @@
+ {
+ 	buf_block_t*	block;
+ 	
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&(buf_pool->LRU_mutex));
+ 
+ 	block = buf_block_align(frame);
+ 
+@@ -888,7 +905,7 @@
+ 
+ 	buf_LRU_make_block_young(block);
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->LRU_mutex));
+ }
+ 
+ /************************************************************************
+@@ -899,7 +916,7 @@
+ /*===========*/
+ 	buf_block_t*	block)	/* in, own: block to be freed */
+ {
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&(buf_pool->free_mutex));
+ 
+ 	mutex_enter(&block->mutex);
+ 
+@@ -909,7 +926,7 @@
+ 
+ 	mutex_exit(&block->mutex);
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->free_mutex));
+ }
+ 
+ /*************************************************************************
+@@ -950,11 +967,11 @@
+ {
+ 	buf_block_t*	block;
+ 
+-	mutex_enter_fast(&(buf_pool->mutex));
++	mutex_enter_fast(&(buf_pool->hash_mutex));
+ 
+ 	block = buf_page_hash_get(space, offset);
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->hash_mutex));
+ 
+ 	return(block);
+ }
+@@ -971,7 +988,7 @@
+ {
+ 	buf_block_t*	block;
+ 
+-	mutex_enter_fast(&(buf_pool->mutex));
++	mutex_enter_fast(&(buf_pool->hash_mutex));
+ 
+ 	block = buf_page_hash_get(space, offset);
+ 
+@@ -979,7 +996,7 @@
+ 		block->check_index_page_at_flush = FALSE;
+ 	}
+ 	
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->hash_mutex));
+ }
+ 
+ /************************************************************************
+@@ -998,7 +1015,7 @@
+ 	buf_block_t*	block;
+ 	ibool		is_hashed;
+ 
+-	mutex_enter_fast(&(buf_pool->mutex));
++	mutex_enter_fast(&(buf_pool->hash_mutex));
+ 
+ 	block = buf_page_hash_get(space, offset);
+ 
+@@ -1008,7 +1025,7 @@
+ 		is_hashed = block->is_hashed;
+ 	}
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->hash_mutex));
+ 
+ 	return(is_hashed);
+ }
+@@ -1050,7 +1067,7 @@
+ {
+ 	buf_block_t*	block;
+ 
+-	mutex_enter_fast(&(buf_pool->mutex));
++	mutex_enter_fast(&(buf_pool->hash_mutex));
+ 
+ 	block = buf_page_hash_get(space, offset);
+ 
+@@ -1058,7 +1075,7 @@
+ 		block->file_page_was_freed = TRUE;
+ 	}
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->hash_mutex));
+ 
+ 	return(block);
+ }
+@@ -1079,7 +1096,7 @@
+ {
+ 	buf_block_t*	block;
+ 
+-	mutex_enter_fast(&(buf_pool->mutex));
++	mutex_enter_fast(&(buf_pool->hash_mutex));
+ 
+ 	block = buf_page_hash_get(space, offset);
+ 
+@@ -1087,7 +1104,7 @@
+ 		block->file_page_was_freed = FALSE;
+ 	}
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->hash_mutex));
+ 
+ 	return(block);
+ }
+@@ -1166,26 +1183,33 @@
+ 	buf_pool->n_page_gets++;
+ loop:
+ 	block = NULL;
+-	mutex_enter_fast(&(buf_pool->mutex));
++	// mutex_enter_fast(&(buf_pool->mutex));
+ 	
+ 	if (guess) {
+ 		block = buf_block_align(guess);
+ 
++		mutex_enter(&block->mutex);
+ 		if ((offset != block->offset) || (space != block->space)
+ 				|| (block->state != BUF_BLOCK_FILE_PAGE)) {
+ 
++			mutex_exit(&block->mutex);
+ 			block = NULL;
+ 		}
+ 	}
+ 
+ 	if (block == NULL) {
++		mutex_enter_fast(&(buf_pool->hash_mutex));
+ 		block = buf_page_hash_get(space, offset);
++		if(block) {
++			mutex_enter(&block->mutex);
++		}
++		mutex_exit(&(buf_pool->hash_mutex));
+ 	}
+ 
+ 	if (block == NULL) {
+ 		/* Page not in buf_pool: needs to be read from file */
+ 
+-		mutex_exit(&(buf_pool->mutex));
++		// mutex_exit(&(buf_pool->mutex));
+ 
+ 		if (mode == BUF_GET_IF_IN_POOL) {
+ 
+@@ -1204,7 +1228,7 @@
+ 		goto loop;
+ 	}
+ 
+-	mutex_enter(&block->mutex);
++	// mutex_enter(&block->mutex);
+ 
+ 	ut_a(block->state == BUF_BLOCK_FILE_PAGE);
+ 
+@@ -1216,7 +1240,7 @@
+ 
+ 		if (mode == BUF_GET_IF_IN_POOL) {
+ 			/* The page is only being read to buffer */
+-			mutex_exit(&buf_pool->mutex);
++			// mutex_exit(&buf_pool->mutex);
+ 			mutex_exit(&block->mutex);
+ 
+ 			return(NULL);
+@@ -1233,7 +1257,9 @@
+ 		LRU list and we must put it to awe_LRU_free_mapped list once
+ 		mapped to a frame */
+ 		
++		mutex_enter_fast(&(buf_pool->mutex));
+ 		buf_awe_map_page_to_frame(block, TRUE);
++		mutex_exit(&buf_pool->mutex);
+ 	}
+ 	
+ #ifdef UNIV_SYNC_DEBUG
+@@ -1241,7 +1267,7 @@
+ #else
+ 	buf_block_buf_fix_inc(block);
+ #endif
+-	mutex_exit(&buf_pool->mutex);
++	// mutex_exit(&buf_pool->mutex);
+ 
+ 	/* Check if this is the first access to the page */
+ 
+@@ -1791,7 +1817,8 @@
+ 
+ 	ut_a(block);
+ 
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&(buf_pool->LRU_mutex));
++	mutex_enter(&(buf_pool->hash_mutex));
+ 	mutex_enter(&block->mutex);
+ 
+ 	if (fil_tablespace_deleted_or_being_deleted_in_mem(space,
+@@ -1806,7 +1833,8 @@
+ 		being deleted, or the page is already in buf_pool, return */
+ 
+ 		mutex_exit(&block->mutex);
+-		mutex_exit(&(buf_pool->mutex));
++		mutex_exit(&(buf_pool->LRU_mutex));
++		mutex_exit(&(buf_pool->hash_mutex));
+ 
+ 		buf_block_free(block);
+ 
+@@ -1821,10 +1849,14 @@
+ 	ut_ad(block);
+ 	
+ 	buf_page_init(space, offset, block);
++	mutex_exit(&(buf_pool->hash_mutex));
+ 
+ 	/* The block must be put to the LRU list, to the old blocks */
+ 
+ 	buf_LRU_add_block(block, TRUE); 	/* TRUE == to old blocks */
++	mutex_exit(&(buf_pool->LRU_mutex));
++
++	mutex_enter(&(buf_pool->mutex)); /* for consistency about aio */
+ 	
+ 	block->io_fix = BUF_IO_READ;
+ 
+@@ -1873,7 +1905,8 @@
+ 
+ 	free_block = buf_LRU_get_free_block();
+ 	
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&(buf_pool->LRU_mutex));
++	mutex_enter(&(buf_pool->hash_mutex));
+ 
+ 	block = buf_page_hash_get(space, offset);
+ 
+@@ -1884,7 +1917,8 @@
+ 		block->file_page_was_freed = FALSE;
+ 
+ 		/* Page can be found in buf_pool */
+-		mutex_exit(&(buf_pool->mutex));
++		mutex_exit(&(buf_pool->LRU_mutex));
++		mutex_exit(&(buf_pool->hash_mutex));
+ 
+ 		buf_block_free(free_block);
+ 
+@@ -1907,6 +1941,7 @@
+ 	mutex_enter(&block->mutex);
+ 
+ 	buf_page_init(space, offset, block);
++	mutex_exit(&(buf_pool->hash_mutex));
+ 
+ 	/* The block must be put to the LRU list */
+ 	buf_LRU_add_block(block, FALSE);
+@@ -1918,7 +1953,7 @@
+ #endif
+ 	buf_pool->n_pages_created++;
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->LRU_mutex));
+ 
+ 	mtr_memo_push(mtr, block, MTR_MEMO_BUF_FIX);
+ 
+@@ -1932,7 +1967,7 @@
+ 	ibuf_merge_or_delete_for_page(NULL, space, offset, TRUE);
+ 
+ 	/* Flush pages from the end of the LRU list if necessary */
+-	buf_flush_free_margin();
++	buf_flush_free_margin(FALSE);
+ 
+ 	frame = block->frame;
+ 
+@@ -1968,6 +2003,7 @@
+ {
+ 	ulint		io_type;
+ 	ulint		read_page_no;
++	ulint		flush_type;
+ 	
+ 	buf_io_counter_t*	io_counter;
+ 	ulint		fold;
+@@ -2050,9 +2086,6 @@
+ 		}
+ 	}
+ 	
+-	mutex_enter(&(buf_pool->mutex));
+-	mutex_enter(&block->mutex);
+-
+ #ifdef UNIV_IBUF_DEBUG
+ 	ut_a(ibuf_count_get(block->space, block->offset) == 0);
+ #endif
+@@ -2061,9 +2094,12 @@
+ 	removes the newest lock debug record, without checking the thread
+ 	id. */
+ 
+-	block->io_fix = 0;
+-	
+ 	if (io_type == BUF_IO_READ) {
++		mutex_enter(&block->mutex);
++		mutex_enter(&(buf_pool->mutex));
++
++		block->io_fix = 0;
++
+ 		/* NOTE that the call to ibuf may have moved the ownership of
+ 		the x-latch to this OS thread: do not let this confuse you in
+ 		debugging! */		
+@@ -2094,6 +2130,8 @@
+ 		}
+ 		}
+ 
++		mutex_exit(&(buf_pool->mutex));
++		mutex_exit(&block->mutex);
+ #ifdef UNIV_DEBUG
+ 		if (buf_debug_prints) {
+ 			fputs("Has read ", stderr);
+@@ -2102,10 +2140,25 @@
+ 	} else {
+ 		ut_ad(io_type == BUF_IO_WRITE);
+ 
++		flush_type = block->flush_type;
++		if (flush_type == BUF_FLUSH_LRU) { /* optimistic! */
++			mutex_enter(&(buf_pool->LRU_mutex));
++		}
++		mutex_enter(&(buf_pool->flush_list_mutex));
++		mutex_enter(&block->mutex);
++		mutex_enter(&(buf_pool->mutex));
++
++		block->io_fix = 0;
++
+ 		/* Write means a flush operation: call the completion
+ 		routine in the flush system */
+ 
+ 		buf_flush_write_complete(block);
++
++		mutex_exit(&(buf_pool->flush_list_mutex));
++		if (flush_type == BUF_FLUSH_LRU) { /* optimistic! */
++			mutex_exit(&(buf_pool->LRU_mutex));
++		}
+ 
+ 		rw_lock_s_unlock_gen(&(block->lock), BUF_IO_WRITE);
+ 		/* io_counter here */
+@@ -2131,6 +2184,9 @@
+ 
+ 		buf_pool->n_pages_written++;
+ 
++		mutex_exit(&(buf_pool->mutex));
++		mutex_exit(&block->mutex);
++
+ #ifdef UNIV_DEBUG
+ 		if (buf_debug_prints) {
+ 			fputs("Has written ", stderr);
+@@ -2138,9 +2194,6 @@
+ #endif /* UNIV_DEBUG */
+ 	}
+ 	
+-	mutex_exit(&block->mutex);
+-	mutex_exit(&(buf_pool->mutex));
+-
+ #ifdef UNIV_DEBUG
+ 	if (buf_debug_prints) {
+ 		fprintf(stderr, "page space %lu page no %lu\n",
+@@ -2168,11 +2221,11 @@
+ 		freed = buf_LRU_search_and_free_block(100);
+ 	}
+ 	
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&(buf_pool->LRU_mutex));
+ 
+ 	ut_ad(UT_LIST_GET_LEN(buf_pool->LRU) == 0);
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->LRU_mutex));
+ }
+ 
+ /*************************************************************************
+@@ -2191,10 +2244,22 @@
+ 	ulint		n_flush		= 0;
+ 	ulint		n_free		= 0;
+ 	ulint		n_page		= 0;
++	ulint		n_single_flush_tmp	= 0;
++	ulint		n_lru_flush_tmp		= 0;
++	ulint		n_list_flush_tmp	= 0;
+ 	
+ 	ut_ad(buf_pool);
+ 
++	mutex_enter(&(buf_pool->LRU_mutex));
++	mutex_enter(&(buf_pool->flush_list_mutex));
++	mutex_enter(&(buf_pool->free_mutex));
++	mutex_enter(&(buf_pool->hash_mutex));
++
+ 	mutex_enter(&(buf_pool->mutex));
++	n_single_flush_tmp = buf_pool->n_flush[BUF_FLUSH_SINGLE_PAGE];
++	n_list_flush_tmp = buf_pool->n_flush[BUF_FLUSH_LIST];
++	n_lru_flush_tmp = buf_pool->n_flush[BUF_FLUSH_LRU];
++	mutex_exit(&(buf_pool->mutex));
+ 
+ 	for (i = 0; i < buf_pool->curr_size; i++) {
+ 
+@@ -2262,11 +2327,14 @@
+ 	}
+ 	ut_a(UT_LIST_GET_LEN(buf_pool->flush_list) == n_flush);
+ 
+-	ut_a(buf_pool->n_flush[BUF_FLUSH_SINGLE_PAGE] == n_single_flush);
+-	ut_a(buf_pool->n_flush[BUF_FLUSH_LIST] == n_list_flush);
+-	ut_a(buf_pool->n_flush[BUF_FLUSH_LRU] == n_lru_flush);
++	ut_a(n_single_flush_tmp == n_single_flush);
++	ut_a(n_list_flush_tmp == n_list_flush);
++	ut_a(n_lru_flush_tmp == n_lru_flush);
+ 	
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->LRU_mutex));
++	mutex_exit(&(buf_pool->flush_list_mutex));
++	mutex_exit(&(buf_pool->free_mutex));
++	mutex_exit(&(buf_pool->hash_mutex));
+ 
+ 	ut_a(buf_LRU_validate());
+ 	ut_a(buf_flush_validate());
+@@ -2298,7 +2366,9 @@
+ 	index_ids = mem_alloc(sizeof(dulint) * size);
+ 	counts = mem_alloc(sizeof(ulint) * size);
+ 
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&(buf_pool->LRU_mutex));
++	mutex_enter(&(buf_pool->flush_list_mutex));
++	mutex_enter(&(buf_pool->free_mutex));
+ 	
+ 	fprintf(stderr,
+ 		"buf_pool size %lu\n"
+@@ -2351,7 +2421,9 @@
+ 		}
+ 	}
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->LRU_mutex));
++	mutex_exit(&(buf_pool->flush_list_mutex));
++	mutex_exit(&(buf_pool->free_mutex));
+ 
+ 	for (i = 0; i < n_found; i++) {
+ 		index = dict_index_get_if_in_cache(index_ids[i]);
+@@ -2386,8 +2458,6 @@
+         ulint i;
+         ulint fixed_pages_number = 0;
+ 
+-        mutex_enter(&(buf_pool->mutex));
+-
+         for (i = 0; i < buf_pool->curr_size; i++) {
+ 
+ 		block = buf_pool_get_nth_block(buf_pool, i);
+@@ -2403,7 +2473,6 @@
+ 		}
+         }
+ 
+-        mutex_exit(&(buf_pool->mutex));
+         return fixed_pages_number;
+ }
+ #endif /* UNIV_DEBUG */
+@@ -2431,7 +2500,9 @@
+ {
+ 	ulint	ratio;
+ 
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&(buf_pool->LRU_mutex));
++	mutex_enter(&(buf_pool->flush_list_mutex));
++	mutex_enter(&(buf_pool->free_mutex));
+ 
+ 	ratio = (100 * UT_LIST_GET_LEN(buf_pool->flush_list))
+ 		     / (1 + UT_LIST_GET_LEN(buf_pool->LRU)
+@@ -2439,7 +2510,9 @@
+ 
+ 		       /* 1 + is there to avoid division by zero */   
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->LRU_mutex));
++	mutex_exit(&(buf_pool->flush_list_mutex));
++	mutex_exit(&(buf_pool->free_mutex));
+ 
+ 	return(ratio);
+ }
+@@ -2459,6 +2532,9 @@
+ 	ut_ad(buf_pool);
+ 	size = buf_pool->curr_size;
+ 
++	mutex_enter(&(buf_pool->LRU_mutex));
++	mutex_enter(&(buf_pool->flush_list_mutex));
++	mutex_enter(&(buf_pool->free_mutex));
+ 	mutex_enter(&(buf_pool->mutex));
+ 	
+ 	if (srv_use_awe) {
+@@ -2532,6 +2608,9 @@
+ 	buf_pool->n_pages_written_old = buf_pool->n_pages_written;
+ 	buf_pool->n_pages_awe_remapped_old = buf_pool->n_pages_awe_remapped;
+ 
++	mutex_exit(&(buf_pool->LRU_mutex));
++	mutex_exit(&(buf_pool->flush_list_mutex));
++	mutex_exit(&(buf_pool->free_mutex));
+ 	mutex_exit(&(buf_pool->mutex));
+ }
+ 
+@@ -2562,8 +2641,6 @@
+ 	
+ 	ut_ad(buf_pool);
+ 
+-	mutex_enter(&(buf_pool->mutex));
+-
+ 	for (i = 0; i < buf_pool->curr_size; i++) {
+ 
+ 		block = buf_pool_get_nth_block(buf_pool, i);
+@@ -2584,8 +2661,6 @@
+ 
+ 		mutex_exit(&block->mutex);
+  	}
+-
+-	mutex_exit(&(buf_pool->mutex));
+ 
+ 	return(TRUE);
+ }	
+@@ -2625,11 +2700,11 @@
+ {
+ 	ulint	len;
+ 
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&(buf_pool->free_mutex));
+ 
+ 	len = UT_LIST_GET_LEN(buf_pool->free);
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->free_mutex));
+ 
+ 	return(len);
+ }
+diff -r 2e0c46e78b50 innobase/buf/buf0flu.c
+--- a/innobase/buf/buf0flu.c	Mon Dec 22 00:33:53 2008 -0800
++++ b/innobase/buf/buf0flu.c	Mon Dec 22 00:33:59 2008 -0800
+@@ -117,12 +117,14 @@
+ 	ut_ad(mutex_own(&block->mutex));
+ #endif /* UNIV_SYNC_DEBUG */
+ 	if (block->state != BUF_BLOCK_FILE_PAGE) {
++		/* I permited not to own LRU_mutex..  */
++/*
+ 		ut_print_timestamp(stderr);
+ 		fprintf(stderr,
+ "  InnoDB: Error: buffer block state %lu in the LRU list!\n",
+ 			(ulong)block->state);
+ 		ut_print_buf(stderr, (byte*)block, sizeof(buf_block_t));
+-
++*/
+ 		return(FALSE);
+ 	}
+ 
+@@ -536,18 +538,20 @@
+ 	ut_ad(flush_type == BUF_FLUSH_LRU || flush_type == BUF_FLUSH_LIST
+ 				|| flush_type == BUF_FLUSH_SINGLE_PAGE);
+ 
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&(buf_pool->hash_mutex));
+ 
+ 	block = buf_page_hash_get(space, offset);
+ 
+ 	ut_a(!block || block->state == BUF_BLOCK_FILE_PAGE);
+ 
+ 	if (!block) {
+-		mutex_exit(&(buf_pool->mutex));
++		mutex_exit(&(buf_pool->hash_mutex));
+ 		return(0);
+ 	}
+ 
+ 	mutex_enter(&block->mutex);
++	mutex_enter(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->hash_mutex));
+ 
+ 	if (flush_type == BUF_FLUSH_LIST
+ 	    && buf_flush_ready_for_flush(block, flush_type)) {
+@@ -744,7 +748,7 @@
+ 		high = fil_space_get_size(space);
+ 	}
+ 
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&(buf_pool->hash_mutex));
+ 
+ 	for (i = low; i < high; i++) {
+ 
+@@ -778,7 +782,7 @@
+ 
+ 				mutex_exit(&block->mutex);
+ 
+-				mutex_exit(&(buf_pool->mutex));
++				mutex_exit(&(buf_pool->hash_mutex));
+ 
+ 				/* Note: as we release the buf_pool mutex
+ 				above, in buf_flush_try_page we cannot be sure
+@@ -789,14 +793,14 @@
+ 				count += buf_flush_try_page(space, i,
+ 							    flush_type);
+ 
+-				mutex_enter(&(buf_pool->mutex));
++				mutex_enter(&(buf_pool->hash_mutex));
+ 			} else {
+ 				mutex_exit(&block->mutex);
+ 			}
+ 		}
+ 	}
+ 				
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->hash_mutex));
+ 
+ 	return(count);
+ }
+@@ -849,7 +853,14 @@
+ 	}
+ 
+ 	(buf_pool->init_flush)[flush_type] = TRUE;
++
++	mutex_exit(&(buf_pool->mutex));
+ 	
++	if (flush_type == BUF_FLUSH_LRU) {
++		mutex_enter(&(buf_pool->LRU_mutex));
++	}
++	mutex_enter(&(buf_pool->flush_list_mutex));
++
+ 	for (;;) {
+ 		/* If we have flushed enough, leave the loop */
+ 		if (page_count >= min_n) {
+@@ -895,7 +906,10 @@
+ 				offset = block->offset;
+ 	    
+ 				mutex_exit(&block->mutex);
+-				mutex_exit(&(buf_pool->mutex));
++				if (flush_type == BUF_FLUSH_LRU) {
++					mutex_exit(&(buf_pool->LRU_mutex));
++				}
++				mutex_exit(&(buf_pool->flush_list_mutex));
+ 
+ 				old_page_count = page_count;
+ 				
+@@ -908,7 +922,10 @@
+ 				flush_type, offset,
+ 				page_count - old_page_count); */
+ 
+-				mutex_enter(&(buf_pool->mutex));
++				if (flush_type == BUF_FLUSH_LRU) {
++					mutex_enter(&(buf_pool->LRU_mutex));
++				}
++				mutex_enter(&(buf_pool->flush_list_mutex));
+ 
+ 			} else if (flush_type == BUF_FLUSH_LRU) {
+ 
+@@ -930,6 +947,13 @@
+ 	    		break;
+ 	    	}
+ 	}
++
++	if (flush_type == BUF_FLUSH_LRU) {
++		mutex_exit(&(buf_pool->LRU_mutex));
++	}
++	mutex_exit(&(buf_pool->flush_list_mutex));
++
++	mutex_enter(&(buf_pool->mutex));
+ 
+ 	(buf_pool->init_flush)[flush_type] = FALSE;
+ 
+@@ -989,10 +1013,14 @@
+ 	buf_block_t*	block;
+ 	ulint		n_replaceable;
+ 	ulint		distance	= 0;
+-	
+-	mutex_enter(&(buf_pool->mutex));
++
++	/* optimistic search... */
++	//mutex_enter(&(buf_pool->LRU_mutex));
++	//mutex_enter(&(buf_pool->free_mutex));
+ 
+ 	n_replaceable = UT_LIST_GET_LEN(buf_pool->free);
++
++	//mutex_exit(&(buf_pool->free_mutex));
+ 
+ 	block = UT_LIST_GET_LAST(buf_pool->LRU);
+ 
+@@ -1014,7 +1042,7 @@
+ 		block = UT_LIST_GET_PREV(LRU, block);
+ 	}
+ 	
+-	mutex_exit(&(buf_pool->mutex));
++	//mutex_exit(&(buf_pool->LRU_mutex));
+ 
+ 	if (n_replaceable >= BUF_FLUSH_FREE_BLOCK_MARGIN) {
+ 
+@@ -1033,8 +1061,9 @@
+ immediately, without waiting. */ 
+ 
+ void
+-buf_flush_free_margin(void)
++buf_flush_free_margin(
+ /*=======================*/
++	ibool	wait)
+ {
+ 	ulint	n_to_flush;
+ 	ulint	n_flushed;
+@@ -1044,7 +1073,7 @@
+ 	if (n_to_flush > 0) {
+ 		n_flushed = buf_flush_batch(BUF_FLUSH_LRU, n_to_flush,
+ 							ut_dulint_zero);
+-		if (n_flushed == ULINT_UNDEFINED) {
++		if (wait && n_flushed == ULINT_UNDEFINED) {
+ 			/* There was an LRU type flush batch already running;
+ 			let us wait for it to end */
+ 		   
+@@ -1094,11 +1123,11 @@
+ {
+ 	ibool	ret;
+ 	
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&(buf_pool->flush_list_mutex));
+ 
+ 	ret = buf_flush_validate_low();
+ 	
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->flush_list_mutex));
+ 
+ 	return(ret);
+ }
+diff -r 2e0c46e78b50 innobase/buf/buf0lru.c
+--- a/innobase/buf/buf0lru.c	Mon Dec 22 00:33:53 2008 -0800
++++ b/innobase/buf/buf0lru.c	Mon Dec 22 00:33:59 2008 -0800
+@@ -79,7 +79,10 @@
+ 	ibool		all_freed;
+ 
+ scan_again:
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&(buf_pool->LRU_mutex));
++	mutex_enter(&(buf_pool->flush_list_mutex));
++	mutex_enter(&(buf_pool->free_mutex));
++	mutex_enter(&(buf_pool->hash_mutex));
+ 	
+ 	all_freed = TRUE;
+ 	
+@@ -117,7 +120,10 @@
+ 			
+ 				mutex_exit(&block->mutex);
+ 
+-				mutex_exit(&(buf_pool->mutex));
++				mutex_exit(&(buf_pool->LRU_mutex));
++				mutex_exit(&(buf_pool->flush_list_mutex));
++				mutex_exit(&(buf_pool->free_mutex));
++				mutex_exit(&(buf_pool->hash_mutex));
+ 
+ 				/* Note that the following call will acquire
+ 				an S-latch on the page */
+@@ -147,7 +153,10 @@
+ 		block = UT_LIST_GET_PREV(LRU, block);
+ 	}
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->LRU_mutex));
++	mutex_exit(&(buf_pool->flush_list_mutex));
++	mutex_exit(&(buf_pool->free_mutex));
++	mutex_exit(&(buf_pool->hash_mutex));
+ 	
+ 	if (!all_freed) {
+ 		os_thread_sleep(20000);
+@@ -170,14 +179,14 @@
+ 	ulint		len;
+ 	ulint		limit;
+ 
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&(buf_pool->LRU_mutex));
+ 
+ 	len = UT_LIST_GET_LEN(buf_pool->LRU);
+ 
+ 	if (len < BUF_LRU_OLD_MIN_LEN) {
+ 		/* The LRU list is too short to do read-ahead */
+ 
+-		mutex_exit(&(buf_pool->mutex));
++		mutex_exit(&(buf_pool->LRU_mutex));
+ 
+ 		return(0);
+ 	}
+@@ -186,7 +195,7 @@
+ 
+ 	limit = block->LRU_position - len / BUF_LRU_INITIAL_RATIO;
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->LRU_mutex));
+ 
+ 	return(limit);
+ }
+@@ -210,13 +219,15 @@
+ 	ulint		distance = 0;
+ 	ibool		freed;
+ 
+-	mutex_enter(&(buf_pool->mutex));
++	/* optimistic search... */
++	//mutex_enter(&(buf_pool->LRU_mutex));
+ 	
++retry:
+ 	freed = FALSE;
+ 	block = UT_LIST_GET_LAST(buf_pool->LRU);
+ 
+ 	while (block != NULL) {
+-	        ut_a(block->in_LRU_list);
++	        //ut_a(block->in_LRU_list); /* optimistic */
+ 
+ 		mutex_enter(&block->mutex);
+ 
+@@ -231,9 +242,17 @@
+ 			}
+ #endif /* UNIV_DEBUG */
+ 
++			mutex_exit(&block->mutex);
++
++			mutex_enter(&(buf_pool->LRU_mutex));/* optimistic */
++
++			mutex_enter(&(buf_pool->hash_mutex));
++			mutex_enter(&block->mutex);
++			if(block->in_LRU_list && buf_flush_ready_for_replace(block)) {
+ 			buf_LRU_block_remove_hashed_page(block);
++			mutex_exit(&(buf_pool->hash_mutex));
+ 
+-			mutex_exit(&(buf_pool->mutex));
++			mutex_exit(&(buf_pool->LRU_mutex));
+ 			mutex_exit(&block->mutex);
+ 
+ 			/* Remove possible adaptive hash index built on the
+@@ -246,14 +265,25 @@
+ 
+ 			ut_a(block->buf_fix_count == 0);
+ 
+-			mutex_enter(&(buf_pool->mutex));
++			mutex_enter(&(buf_pool->free_mutex));
+ 			mutex_enter(&block->mutex);
+ 
+ 			buf_LRU_block_free_hashed_page(block);
+ 			freed = TRUE;
++			mutex_exit(&(buf_pool->free_mutex));
+ 			mutex_exit(&block->mutex);
+ 
+ 			break;
++			} else { /* someone may interrupt...??? */
++			mutex_exit(&(buf_pool->LRU_mutex));/* optimistic */
++
++			mutex_exit(&(buf_pool->hash_mutex));
++
++			if (!(block->in_LRU_list)) {
++				mutex_exit(&block->mutex);
++				goto retry;
++			}
++			}
+ 		}
+ 
+ 		mutex_exit(&block->mutex);
+@@ -264,13 +294,21 @@
+ 		if (!freed && n_iterations <= 10
+ 		    && distance > 100 + (n_iterations * buf_pool->curr_size)
+ 					/ 10) {
++
++			mutex_enter(&(buf_pool->mutex));
+ 			buf_pool->LRU_flush_ended = 0;
++			mutex_exit(&(buf_pool->mutex));
+ 
+-			mutex_exit(&(buf_pool->mutex));
++			//mutex_exit(&(buf_pool->LRU_mutex));
+ 			
+ 			return(FALSE);
+ 		}
+ 	}
++	if (!freed) {
++		//mutex_exit(&(buf_pool->LRU_mutex));
++	}
++
++	mutex_enter(&(buf_pool->mutex));
+ 	if (buf_pool->LRU_flush_ended > 0) {
+ 		buf_pool->LRU_flush_ended--;
+ 	}
+@@ -322,7 +360,8 @@
+ {
+ 	ibool	ret	= FALSE;
+ 
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&(buf_pool->LRU_mutex));
++	mutex_enter(&(buf_pool->free_mutex));
+ 
+ 	if (!recv_recovery_on && UT_LIST_GET_LEN(buf_pool->free)
+ 	   + UT_LIST_GET_LEN(buf_pool->LRU) < buf_pool->max_size / 4) {
+@@ -330,7 +369,8 @@
+ 		ret = TRUE;
+ 	}
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->LRU_mutex));
++	mutex_exit(&(buf_pool->free_mutex));
+ 
+ 	return(ret);
+ }
+@@ -353,7 +393,7 @@
+ 	ibool		mon_value_was   = FALSE;
+ 	ibool		started_monitor	= FALSE;
+ loop:
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&(buf_pool->free_mutex)); /* LRU info:optimistic */
+ 
+ 	if (!recv_recovery_on && UT_LIST_GET_LEN(buf_pool->free)
+ 	   + UT_LIST_GET_LEN(buf_pool->LRU) < buf_pool->max_size / 20) {
+@@ -437,7 +477,7 @@
+ 
+ 		mutex_exit(&block->mutex);
+ 
+-		mutex_exit(&(buf_pool->mutex));
++		mutex_exit(&(buf_pool->free_mutex));
+ 
+ 		if (started_monitor) {
+ 			srv_print_innodb_monitor = mon_value_was;
+@@ -449,7 +489,7 @@
+ 	/* If no block was in the free list, search from the end of the LRU
+ 	list and try to free a block there */
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->free_mutex));
+ 
+ 	freed = buf_LRU_search_and_free_block(n_iterations);
+ 
+@@ -486,7 +526,7 @@
+ 
+ 	/* No free block was found: try to flush the LRU list */
+ 
+-	buf_flush_free_margin();
++	buf_flush_free_margin(TRUE);
+         ++srv_buf_pool_wait_free;
+ 
+ 	os_aio_simulated_wake_handler_threads();
+@@ -958,7 +998,7 @@
+ 	ulint		LRU_pos;
+ 	
+ 	ut_ad(buf_pool);
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&(buf_pool->LRU_mutex));
+ 
+ 	if (UT_LIST_GET_LEN(buf_pool->LRU) >= BUF_LRU_OLD_MIN_LEN) {
+ 
+@@ -1001,7 +1041,10 @@
+ 
+ 	if (buf_pool->LRU_old) {
+ 		ut_a(buf_pool->LRU_old_len == old_len);
+-	} 
++	}
++
++	mutex_exit(&(buf_pool->LRU_mutex));
++	mutex_enter(&(buf_pool->free_mutex));
+ 
+ 	UT_LIST_VALIDATE(free, buf_block_t, buf_pool->free);
+ 
+@@ -1013,7 +1056,7 @@
+ 		block = UT_LIST_GET_NEXT(free, block);
+ 	}
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->free_mutex));
+ 	return(TRUE);
+ }
+ 
+@@ -1029,7 +1072,7 @@
+ 	ulint		len;
+ 	
+ 	ut_ad(buf_pool);
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&(buf_pool->LRU_mutex));
+ 
+ 	fprintf(stderr, "Pool ulint clock %lu\n", (ulong) buf_pool->ulint_clock);
+ 
+@@ -1073,5 +1116,5 @@
+ 		}
+ 	}
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->LRU_mutex));
+ }
+diff -r 2e0c46e78b50 innobase/buf/buf0rea.c
+--- a/innobase/buf/buf0rea.c	Mon Dec 22 00:33:53 2008 -0800
++++ b/innobase/buf/buf0rea.c	Mon Dec 22 00:33:59 2008 -0800
+@@ -236,10 +236,12 @@
+ 
+ 		return(0);
+ 	}	
++	mutex_exit(&(buf_pool->mutex));
+ 
+ 	/* Count how many blocks in the area have been recently accessed,
+ 	that is, reside near the start of the LRU list. */
+ 
++	mutex_enter(&(buf_pool->hash_mutex));
+ 	for (i = low; i < high; i++) {
+ 		block = buf_page_hash_get(space, i);
+ 
+@@ -250,8 +252,9 @@
+ 			recent_blocks++;
+ 		}
+ 	}
++	mutex_exit(&(buf_pool->hash_mutex));
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	// mutex_exit(&(buf_pool->mutex));
+ 	
+ 	if (recent_blocks < BUF_READ_AHEAD_RANDOM_THRESHOLD) {
+ 		/* Do nothing */
+@@ -347,7 +350,7 @@
+ 	}
+ 
+ 	/* Flush pages from the end of the LRU list if necessary */
+-	buf_flush_free_margin();
++	buf_flush_free_margin(FALSE);
+ 
+ 	return(count + count2);
+ }
+@@ -450,6 +453,7 @@
+ 
+ 		return(0);
+ 	}	
++	mutex_exit(&(buf_pool->mutex));
+ 
+ 	/* Check that almost all pages in the area have been accessed; if
+ 	offset == low, the accesses must be in a descending order, otherwise,
+@@ -463,6 +467,7 @@
+ 
+ 	fail_count = 0;
+ 
++	mutex_enter(&(buf_pool->hash_mutex));
+ 	for (i = low; i < high; i++) {
+ 		block = buf_page_hash_get(space, i);
+ 		
+@@ -479,12 +484,13 @@
+ 			pred_block = block;
+ 		}
+ 	}
++	mutex_exit(&(buf_pool->hash_mutex));
+ 
+ 	if (fail_count > BUF_READ_AHEAD_LINEAR_AREA -
+ 			 BUF_READ_AHEAD_LINEAR_THRESHOLD) {
+ 		/* Too many failures: return */
+ 
+-		mutex_exit(&(buf_pool->mutex));
++		//mutex_exit(&(buf_pool->mutex));
+ 
+ 		return(0);
+ 	}
+@@ -492,10 +498,11 @@
+ 	/* If we got this far, we know that enough pages in the area have
+ 	been accessed in the right order: linear read-ahead can be sensible */
+ 
++	mutex_enter(&(buf_pool->hash_mutex));
+ 	block = buf_page_hash_get(space, offset);
+ 
+ 	if (block == NULL) {
+-		mutex_exit(&(buf_pool->mutex));
++		mutex_exit(&(buf_pool->hash_mutex));
+ 
+ 		return(0);
+ 	}
+@@ -511,7 +518,7 @@
+ 	pred_offset = fil_page_get_prev(frame);
+ 	succ_offset = fil_page_get_next(frame);
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->hash_mutex));
+ 	
+ 	if ((offset == low) && (succ_offset == offset + 1)) {
+ 
+@@ -587,7 +594,7 @@
+ 	os_aio_simulated_wake_handler_threads();
+ 
+ 	/* Flush pages from the end of the LRU list if necessary */
+-	buf_flush_free_margin();
++	buf_flush_free_margin(FALSE);
+ 
+ #ifdef UNIV_DEBUG
+ 	if (buf_debug_prints && (count > 0)) {
+@@ -655,7 +662,7 @@
+ 	os_aio_simulated_wake_handler_threads();
+ 
+ 	/* Flush pages from the end of the LRU list if necessary */
+-	buf_flush_free_margin();
++	buf_flush_free_margin(FALSE);
+ 
+ #ifdef UNIV_DEBUG
+ 	if (buf_debug_prints) {
+@@ -727,7 +734,7 @@
+ 	os_aio_simulated_wake_handler_threads();
+ 
+ 	/* Flush pages from the end of the LRU list if necessary */
+-	buf_flush_free_margin();
++	buf_flush_free_margin(FALSE);
+ 
+ #ifdef UNIV_DEBUG
+ 	if (buf_debug_prints) {
+diff -r 2e0c46e78b50 innobase/include/buf0buf.h
+--- a/innobase/include/buf0buf.h	Mon Dec 22 00:33:53 2008 -0800
++++ b/innobase/include/buf0buf.h	Mon Dec 22 00:33:59 2008 -0800
+@@ -946,6 +946,7 @@
+ 	mem_heap_t*	io_counter_heap;
+ 	ulint		io_counters;
+ 	hash_table_t*	page_hash;	/* hash table of the file pages */
++	mutex_t		hash_mutex;
+ 
+ 	ulint		n_pend_reads;	/* number of pending read operations */
+ 
+@@ -978,6 +979,7 @@
+ 	UT_LIST_BASE_NODE_T(buf_block_t) flush_list;
+ 					/* base node of the modified block
+ 					list */
++	mutex_t		flush_list_mutex;
+ 	ibool		init_flush[BUF_FLUSH_LIST + 1];
+ 					/* this is TRUE when a flush of the
+ 					given type is being initialized */
+@@ -1011,8 +1013,10 @@
+ 					in the case of AWE, at the start are
+ 					always free blocks for which the
+ 					physical memory is mapped to a frame */
++	mutex_t		free_mutex;
+ 	UT_LIST_BASE_NODE_T(buf_block_t) LRU;
+ 					/* base node of the LRU list */
++	mutex_t		LRU_mutex;
+ 	buf_block_t*	LRU_old; 	/* pointer to the about 3/8 oldest
+ 					blocks in the LRU list; NULL if LRU
+ 					length less than BUF_LRU_OLD_MIN_LEN */
+diff -r 2e0c46e78b50 innobase/include/buf0buf.ic
+--- a/innobase/include/buf0buf.ic	Mon Dec 22 00:33:53 2008 -0800
++++ b/innobase/include/buf0buf.ic	Mon Dec 22 00:33:59 2008 -0800
+@@ -112,7 +112,7 @@
+ 	buf_block_t*	block;
+ 	dulint		lsn;
+ 	
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&(buf_pool->flush_list_mutex));
+ 
+ 	block = UT_LIST_GET_LAST(buf_pool->flush_list);
+ 
+@@ -122,7 +122,7 @@
+ 		lsn = block->oldest_modification;
+ 	}
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->flush_list_mutex));
+ 
+ 	return(lsn);
+ }
+@@ -392,18 +392,18 @@
+ 				/* out: TRUE if io going on */
+ 	buf_block_t*	block)	/* in: buf_pool block, must be bufferfixed */
+ {
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&block->mutex);
+ 
+ 	ut_ad(block->state == BUF_BLOCK_FILE_PAGE);
+ 	ut_ad(block->buf_fix_count > 0);
+ 
+ 	if (block->io_fix != 0) {
+-		mutex_exit(&(buf_pool->mutex));
++		mutex_exit(&block->mutex);
+ 
+ 		return(TRUE);
+ 	}
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&block->mutex);
+ 
+ 	return(FALSE);
+ }
+@@ -425,7 +425,7 @@
+ 
+ 	block = buf_block_align(frame);
+ 
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&block->mutex);
+ 
+ 	if (block->state == BUF_BLOCK_FILE_PAGE) {
+ 		lsn = block->newest_modification;
+@@ -433,7 +433,7 @@
+ 		lsn = ut_dulint_zero;
+ 	}
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&block->mutex);
+ 
+ 	return(lsn);
+ }
+@@ -632,9 +632,9 @@
+ 	ut_a(block->state == BUF_BLOCK_FILE_PAGE);
+ 
+ 	if (rw_latch == RW_X_LATCH && mtr->modifications) {
+-		mutex_enter(&buf_pool->mutex);
++		mutex_enter(&buf_pool->flush_list_mutex);
+ 		buf_flush_note_modification(block, mtr);
+-		mutex_exit(&buf_pool->mutex);
++		mutex_exit(&buf_pool->flush_list_mutex);
+ 	}
+ 
+ 	mutex_enter(&block->mutex);
+diff -r 2e0c46e78b50 innobase/include/buf0flu.h
+--- a/innobase/include/buf0flu.h	Mon Dec 22 00:33:53 2008 -0800
++++ b/innobase/include/buf0flu.h	Mon Dec 22 00:33:59 2008 -0800
+@@ -26,8 +26,9 @@
+ a margin of replaceable pages there. */
+ 
+ void
+-buf_flush_free_margin(void);
++buf_flush_free_margin(
+ /*=======================*/
++	ibool	wait);
+ /************************************************************************
+ Initializes a page for writing to the tablespace. */
+ 
+diff -r 2e0c46e78b50 innobase/include/buf0flu.ic
+--- a/innobase/include/buf0flu.ic	Mon Dec 22 00:33:53 2008 -0800
++++ b/innobase/include/buf0flu.ic	Mon Dec 22 00:33:59 2008 -0800
+@@ -84,7 +84,7 @@
+ 	ut_ad(rw_lock_own(&(block->lock), RW_LOCK_EX));
+ #endif /* UNIV_SYNC_DEBUG */
+ 
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&(buf_pool->flush_list_mutex));
+ 	
+ 	ut_ad(ut_dulint_cmp(block->newest_modification, end_lsn) <= 0);
+ 	
+@@ -102,5 +102,5 @@
+ 							start_lsn) <= 0);
+ 	}
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->flush_list_mutex));
+ }
+diff -r 2e0c46e78b50 innobase/log/log0recv.c
+--- a/innobase/log/log0recv.c	Mon Dec 22 00:33:53 2008 -0800
++++ b/innobase/log/log0recv.c	Mon Dec 22 00:33:59 2008 -0800
+@@ -1693,11 +1693,11 @@
+ 
+ 	mtr_start(&mtr);
+ 
+-	mutex_enter(&(buf_pool->mutex));
++	mutex_enter(&(buf_pool->hash_mutex));
+ 
+ 	page = buf_page_hash_get(space, page_no)->frame;
+ 
+-	mutex_exit(&(buf_pool->mutex));
++	mutex_exit(&(buf_pool->hash_mutex));
+ 
+ 	replica = buf_page_get(space + RECV_REPLICA_SPACE_ADD, page_no,
+ 							RW_X_LATCH, &mtr);
+diff -r 2e0c46e78b50 patch_info/split_buf_pool_mutex_fixed_optimistic_safe.info
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/patch_info/split_buf_pool_mutex_fixed_optimistic_safe.info	Mon Dec 22 00:33:59 2008 -0800
+@@ -0,0 +1,6 @@
++File=split_buf_pool_mutex_fixed_optimistic_safe.patch
++Name=InnoDB patch to fix buffer pool scalability
++Version=1.0
++Author=Yasufumi Kinoshita
++License=BSD
++Comment=
diff --git a/1101_innodb_rw_lock-percona-5.0.75-b12.patch b/1101_innodb_rw_lock-percona-5.0.75-b12.patch
new file mode 100644
index 0000000..3070bb0
--- /dev/null
+++ b/1101_innodb_rw_lock-percona-5.0.75-b12.patch
@@ -0,0 +1,1459 @@
+diff -r 962aec0d731c innobase/configure
+--- a/innobase/configure	Thu Oct 09 08:28:53 2008 -0700
++++ b/innobase/configure	Thu Oct 09 08:30:28 2008 -0700
+@@ -20519,6 +20519,88 @@
+ 
+ fi
+ done
++
++
++# as http://lists.mysql.com/commits/40686 does
++{ echo "$as_me:$LINENO: checking whether the compiler provides atomic builtins" >&5
++echo $ECHO_N "checking whether the compiler provides atomic builtins... $ECHO_C" >&6; }
++if test "${mysql_cv_atomic_builtins+set}" = set; then
++  echo $ECHO_N "(cached) $ECHO_C" >&6
++else
++  if test "$cross_compiling" = yes; then
++  { { echo "$as_me:$LINENO: error: cannot run test program while cross compiling
++See \`config.log' for more details." >&5
++echo "$as_me: error: cannot run test program while cross compiling
++See \`config.log' for more details." >&2;}
++   { (exit 1); exit 1; }; }
++else
++  cat >conftest.$ac_ext <<_ACEOF
++/* confdefs.h.  */
++_ACEOF
++cat confdefs.h >>conftest.$ac_ext
++cat >>conftest.$ac_ext <<_ACEOF
++/* end confdefs.h.  */
++
++  int main()
++  {
++    int foo= -10; int bar= 10;
++    __sync_fetch_and_add(&foo, bar);
++    if (foo)
++      return -1;
++    bar= __sync_lock_test_and_set(&foo, bar);
++    if (bar || foo != 10)
++      return -1;
++    bar= __sync_val_compare_and_swap(&bar, foo, 15);
++    if (bar)
++      return -1;
++    return 0;
++  }
++
++_ACEOF
++rm -f conftest$ac_exeext
++if { (ac_try="$ac_link"
++case "(($ac_try" in
++  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
++  *) ac_try_echo=$ac_try;;
++esac
++eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
++  (eval "$ac_link") 2>&5
++  ac_status=$?
++  echo "$as_me:$LINENO: \$? = $ac_status" >&5
++  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
++  { (case "(($ac_try" in
++  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
++  *) ac_try_echo=$ac_try;;
++esac
++eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
++  (eval "$ac_try") 2>&5
++  ac_status=$?
++  echo "$as_me:$LINENO: \$? = $ac_status" >&5
++  (exit $ac_status); }; }; then
++  mysql_cv_atomic_builtins=yes
++else
++  echo "$as_me: program exited with status $ac_status" >&5
++echo "$as_me: failed program was:" >&5
++sed 's/^/| /' conftest.$ac_ext >&5
++
++( exit $ac_status )
++mysql_cv_atomic_builtins=no
++fi
++rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
++fi
++
++
++fi
++{ echo "$as_me:$LINENO: result: $mysql_cv_atomic_builtins" >&5
++echo "${ECHO_T}$mysql_cv_atomic_builtins" >&6; }
++
++if test "x$mysql_cv_atomic_builtins" = xyes; then
++
++cat >>confdefs.h <<\_ACEOF
++#define HAVE_ATOMIC_BUILTINS 1
++_ACEOF
++
++fi
+ 
+ #AC_CHECK_FUNCS(readdir_r) MySQL checks that it has also the right args.
+ # Some versions of Unix only take 2 arguments.
+diff -r 962aec0d731c innobase/configure.in
+--- a/innobase/configure.in	Thu Oct 09 08:28:53 2008 -0700
++++ b/innobase/configure.in	Thu Oct 09 08:30:28 2008 -0700
+@@ -42,6 +42,31 @@
+ AC_CHECK_FUNCS(sched_yield)
+ AC_CHECK_FUNCS(fdatasync)
+ AC_CHECK_FUNCS(localtime_r)
++
++# as http://lists.mysql.com/commits/40686 does
++AC_CACHE_CHECK([whether the compiler provides atomic builtins],
++               [mysql_cv_atomic_builtins], [AC_TRY_RUN([
++  int main()
++  {
++    int foo= -10; int bar= 10;
++    __sync_fetch_and_add(&foo, bar);
++    if (foo)
++      return -1;
++    bar= __sync_lock_test_and_set(&foo, bar);
++    if (bar || foo != 10)
++      return -1;
++    bar= __sync_val_compare_and_swap(&bar, foo, 15);
++    if (bar)
++      return -1;
++    return 0;
++  }
++], [mysql_cv_atomic_builtins=yes], [mysql_cv_atomic_builtins=no])])
++
++if test "x$mysql_cv_atomic_builtins" = xyes; then
++  AC_DEFINE(HAVE_ATOMIC_BUILTINS, 1,
++            [Define to 1 if compiler provides atomic builtins.])
++fi
++
+ #AC_CHECK_FUNCS(readdir_r) MySQL checks that it has also the right args.
+ # Some versions of Unix only take 2 arguments.
+ #AC_C_INLINE  Already checked in MySQL
+diff -r 962aec0d731c innobase/ib_config.h
+--- a/innobase/ib_config.h	Thu Oct 09 08:28:53 2008 -0700
++++ b/innobase/ib_config.h	Thu Oct 09 08:30:28 2008 -0700
+@@ -3,6 +3,9 @@
+ 
+ /* Define to 1 if you have the <aio.h> header file. */
+ #define HAVE_AIO_H 1
++
++/* Define to 1 if compiler provides atomic builtins. */
++#define HAVE_ATOMIC_BUILTINS 1
+ 
+ /* Define to 1 if you have the <dlfcn.h> header file. */
+ #define HAVE_DLFCN_H 1
+diff -r 962aec0d731c innobase/ib_config.h.in
+--- a/innobase/ib_config.h.in	Thu Oct 09 08:28:53 2008 -0700
++++ b/innobase/ib_config.h.in	Thu Oct 09 08:30:28 2008 -0700
+@@ -2,6 +2,9 @@
+ 
+ /* Define to 1 if you have the <aio.h> header file. */
+ #undef HAVE_AIO_H
++
++/* Define to 1 if compiler provides atomic builtins. */
++#undef HAVE_ATOMIC_BUILTINS
+ 
+ /* Define to 1 if you have the <dlfcn.h> header file. */
+ #undef HAVE_DLFCN_H
+diff -r 962aec0d731c innobase/include/sync0rw.h
+--- a/innobase/include/sync0rw.h	Thu Oct 09 08:28:53 2008 -0700
++++ b/innobase/include/sync0rw.h	Thu Oct 09 08:30:28 2008 -0700
+@@ -325,7 +325,17 @@
+ Accessor functions for rw lock. */
+ UNIV_INLINE
+ ulint
+-rw_lock_get_waiters(
++rw_lock_get_s_waiters(
++/*==================*/
++	rw_lock_t*	lock);
++UNIV_INLINE
++ulint
++rw_lock_get_x_waiters(
++/*==================*/
++	rw_lock_t*	lock);
++UNIV_INLINE
++ulint
++rw_lock_get_wx_waiters(
+ /*================*/
+ 	rw_lock_t*	lock);
+ UNIV_INLINE
+@@ -408,6 +418,11 @@
+ 	rw_lock_debug_t*	info);	/* in: debug struct */
+ #endif /* UNIV_SYNC_DEBUG */
+ 
++#ifdef HAVE_ATOMIC_BUILTINS
++/* This value means NOT_LOCKED */
++#define RW_LOCK_BIAS		0x00100000
++#endif
++
+ /* NOTE! The structure appears here only for the compiler to know its size.
+ Do not use its fields directly! The structure used in the spin lock
+ implementation of a read-write lock. Several threads may have a shared lock
+@@ -417,9 +432,9 @@
+ field. Then no new readers are allowed in. */
+ 
+ struct rw_lock_struct {
+-	os_event_t	event;	/* Used by sync0arr.c for thread queueing */
+-
+-#ifdef __WIN__
++			/* Used by sync0arr.c for thread queueing */
++	os_event_t	s_event;	/* Used for s_lock */
++	os_event_t	x_event;	/* Used for x_lock */
+ 	os_event_t	wait_ex_event;	/* This windows specific event is
+ 				used by the thread which has set the
+ 				lock state to RW_LOCK_WAIT_EX. The
+@@ -427,31 +442,35 @@
+ 				thread will be the next one to proceed
+ 				once the current the event gets
+ 				signalled. See LEMMA 2 in sync0sync.c */
++
++#ifdef HAVE_ATOMIC_BUILTINS
++	volatile lint	lock_word;	/* Used by using atomic builtin */
+ #endif
+ 
+-	ulint	reader_count;	/* Number of readers who have locked this
++	volatile ulint	reader_count;	/* Number of readers who have locked this
+ 				lock in the shared mode */
+-	ulint	writer; 	/* This field is set to RW_LOCK_EX if there
++	volatile ulint	writer; 	/* This field is set to RW_LOCK_EX if there
+ 				is a writer owning the lock (in exclusive
+ 				mode), RW_LOCK_WAIT_EX if a writer is
+ 				queueing for the lock, and
+ 				RW_LOCK_NOT_LOCKED, otherwise. */
+-	os_thread_id_t	writer_thread;
++	volatile os_thread_id_t	writer_thread;
+ 				/* Thread id of a possible writer thread */
+-	ulint	writer_count;	/* Number of times the same thread has
++	volatile ulint	writer_count;	/* Number of times the same thread has
+ 				recursively locked the lock in the exclusive
+ 				mode */
++#ifndef HAVE_ATOMIC_BUILTINS
+ 	mutex_t	mutex;		/* The mutex protecting rw_lock_struct */
++#endif
+ 	ulint	pass; 		/* Default value 0. This is set to some
+ 				value != 0 given by the caller of an x-lock
+ 				operation, if the x-lock is to be passed to
+ 				another thread to unlock (which happens in
+ 				asynchronous i/o). */
+-	ulint	waiters;	/* This ulint is set to 1 if there are
+-				waiters (readers or writers) in the global
+-				wait array, waiting for this rw_lock.
+-				Otherwise, == 0. */
+-	ibool	writer_is_wait_ex;
++	volatile ulint	s_waiters; /* 1: there are waiters (s_lock) */
++	volatile ulint	x_waiters; /* 1: there are waiters (x_lock) */
++	volatile ulint	wait_ex_waiters; /* 1: there are waiters (wait_ex) */
++	volatile ibool	writer_is_wait_ex;
+ 				/* This is TRUE if the writer field is
+ 				RW_LOCK_WAIT_EX; this field is located far
+ 				from the memory update hotspot fields which
+diff -r 962aec0d731c innobase/include/sync0rw.ic
+--- a/innobase/include/sync0rw.ic	Thu Oct 09 08:28:53 2008 -0700
++++ b/innobase/include/sync0rw.ic	Thu Oct 09 08:30:28 2008 -0700
+@@ -47,20 +47,52 @@
+ Accessor functions for rw lock. */
+ UNIV_INLINE
+ ulint
+-rw_lock_get_waiters(
++rw_lock_get_s_waiters(
+ /*================*/
+ 	rw_lock_t*	lock)
+ {
+-	return(lock->waiters);
++	return(lock->s_waiters);
++}
++UNIV_INLINE
++ulint
++rw_lock_get_x_waiters(
++/*================*/
++	rw_lock_t*	lock)
++{
++	return(lock->x_waiters);
++}
++UNIV_INLINE
++ulint
++rw_lock_get_wx_waiters(
++/*================*/
++	rw_lock_t*      lock)
++{
++	return(lock->wait_ex_waiters);
+ }
+ UNIV_INLINE
+ void
+-rw_lock_set_waiters(
+-/*================*/
++rw_lock_set_s_waiters(
+ 	rw_lock_t*	lock,
+ 	ulint		flag)
+ {
+-	lock->waiters = flag;
++	lock->s_waiters = flag;
++}
++UNIV_INLINE
++void
++rw_lock_set_x_waiters(
++	rw_lock_t*	lock,
++	ulint		flag)
++{
++	lock->x_waiters = flag;
++}
++UNIV_INLINE
++void
++rw_lock_set_wx_waiters(
++/*================*/
++	rw_lock_t*      lock,
++	ulint           flag)
++{
++	lock->wait_ex_waiters = flag;
+ }
+ UNIV_INLINE
+ ulint
+@@ -68,7 +100,19 @@
+ /*===============*/
+ 	rw_lock_t*	lock)
+ {
++#ifdef HAVE_ATOMIC_BUILTINS
++	if (lock->writer == RW_LOCK_NOT_LOCKED) {
++		return(RW_LOCK_NOT_LOCKED);
++	}
++
++	if (lock->writer_is_wait_ex) {
++		return(RW_LOCK_WAIT_EX);
++	} else {
++		return(RW_LOCK_EX);
++	}
++#else
+ 	return(lock->writer);
++#endif
+ }
+ UNIV_INLINE
+ void
+@@ -96,6 +140,7 @@
+ {
+ 	lock->reader_count = count;
+ }
++#ifndef HAVE_ATOMIC_BUILTINS
+ UNIV_INLINE
+ mutex_t*
+ rw_lock_get_mutex(
+@@ -104,6 +149,7 @@
+ {
+ 	return(&(lock->mutex));
+ }
++#endif
+ 
+ /**********************************************************************
+ Returns the value of writer_count for the lock. Does not reserve the lock
+@@ -133,14 +179,26 @@
+ 	const char*	file_name, /* in: file name where lock requested */
+ 	ulint		line)	/* in: line where requested */
+ {
+-#ifdef UNIV_SYNC_DEBUG
++#if defined(UNIV_SYNC_DEBUG) && !defined(HAVE_ATOMIC_BUILTINS)
+ 	ut_ad(mutex_own(rw_lock_get_mutex(lock)));
+ #endif /* UNIV_SYNC_DEBUG */
+ 	/* Check if the writer field is free */
+ 
++#ifdef HAVE_ATOMIC_BUILTINS
++	if (UNIV_LIKELY(rw_lock_get_writer(lock) == RW_LOCK_NOT_LOCKED)) {
++		/* try s-lock */
++		if(__sync_sub_and_fetch(&(lock->lock_word),1) <= 0) {
++			/* fail */
++			__sync_fetch_and_add(&(lock->lock_word),1);
++			return(FALSE);	/* locking did not succeed */
++		}
++		/* success */
++		__sync_fetch_and_add(&(lock->reader_count),1);
++#else
+ 	if (UNIV_LIKELY(lock->writer == RW_LOCK_NOT_LOCKED)) {
+ 		/* Set the shared lock by incrementing the reader count */
+ 		lock->reader_count++;
++#endif
+ 
+ #ifdef UNIV_SYNC_DEBUG
+ 		rw_lock_add_debug_info(lock, pass, RW_LOCK_SHARED, file_name,
+@@ -167,11 +225,15 @@
+ 	const char*	file_name,	/* in: file name where requested */
+ 	ulint		line)		/* in: line where lock requested */
+ {
+-	ut_ad(lock->writer == RW_LOCK_NOT_LOCKED);
++	ut_ad(rw_lock_get_writer(lock) == RW_LOCK_NOT_LOCKED);
+ 	ut_ad(rw_lock_get_reader_count(lock) == 0);
+ 	
+ 	/* Set the shared lock by incrementing the reader count */
++#ifdef HAVE_ATOMIC_BUILTINS
++	__sync_fetch_and_add(&(lock->reader_count),1);
++#else
+ 	lock->reader_count++;
++#endif
+ 
+ 	lock->last_s_file_name = file_name;
+ 	lock->last_s_line = line;
+@@ -199,7 +261,11 @@
+ 
+ 	rw_lock_set_writer(lock, RW_LOCK_EX);
+ 	lock->writer_thread = os_thread_get_curr_id();
++#ifdef HAVE_ATOMIC_BUILTINS
++	__sync_fetch_and_add(&(lock->writer_count),1);
++#else
+ 	lock->writer_count++;
++#endif
+ 	lock->pass = 0;
+ 			
+ 	lock->last_x_file_name = file_name;
+@@ -241,15 +307,21 @@
+ 	ut_ad(!rw_lock_own(lock, RW_LOCK_SHARED)); /* see NOTE above */
+ #endif /* UNIV_SYNC_DEBUG */
+ 
++#ifndef HAVE_ATOMIC_BUILTINS
+ 	mutex_enter(rw_lock_get_mutex(lock));
++#endif
+ 
+ 	if (UNIV_LIKELY(rw_lock_s_lock_low(lock, pass, file_name, line))) {
++#ifndef HAVE_ATOMIC_BUILTINS
+ 		mutex_exit(rw_lock_get_mutex(lock));
++#endif
+ 
+ 		return; /* Success */
+ 	} else {
+ 		/* Did not succeed, try spin wait */
++#ifndef HAVE_ATOMIC_BUILTINS
+ 		mutex_exit(rw_lock_get_mutex(lock));
++#endif
+ 
+ 		rw_lock_s_lock_spin(lock, pass, file_name, line);
+ 
+@@ -272,11 +344,23 @@
+ {
+ 	ibool	success	= FALSE;
+ 
++#ifdef HAVE_ATOMIC_BUILTINS
++	if (rw_lock_get_writer(lock) == RW_LOCK_NOT_LOCKED) {
++		/* try s-lock */
++		if(__sync_sub_and_fetch(&(lock->lock_word),1) <= 0) {
++			/* fail */
++			__sync_fetch_and_add(&(lock->lock_word),1);
++			return(FALSE);	/* locking did not succeed */
++		}
++		/* success */
++		__sync_fetch_and_add(&(lock->reader_count),1);
++#else
+ 	mutex_enter(rw_lock_get_mutex(lock));
+ 
+ 	if (lock->writer == RW_LOCK_NOT_LOCKED) {
+ 		/* Set the shared lock by incrementing the reader count */
+ 		lock->reader_count++;
++#endif
+ 
+ #ifdef UNIV_SYNC_DEBUG
+ 		rw_lock_add_debug_info(lock, 0, RW_LOCK_SHARED, file_name,
+@@ -289,7 +373,9 @@
+ 		success = TRUE;
+ 	}
+ 
++#ifndef HAVE_ATOMIC_BUILTINS
+ 	mutex_exit(rw_lock_get_mutex(lock));
++#endif
+ 
+ 	return(success);
+ }
+@@ -309,6 +395,55 @@
+ {
+ 	ibool		success		= FALSE;
+ 	os_thread_id_t	curr_thread	= os_thread_get_curr_id();
++#ifdef HAVE_ATOMIC_BUILTINS
++	if ((lock->lock_word == RW_LOCK_BIAS)
++			&& rw_lock_get_writer(lock) == RW_LOCK_NOT_LOCKED) {
++		/* try x-lock */
++		if(__sync_sub_and_fetch(&(lock->lock_word),
++				RW_LOCK_BIAS) == 0) {
++			/* success */
++			/* try to lock writer */
++			if(__sync_lock_test_and_set(&(lock->writer),RW_LOCK_EX)
++					== RW_LOCK_NOT_LOCKED) {
++				/* success */
++				lock->writer_thread = curr_thread;
++				lock->pass = 0;
++				lock->writer_is_wait_ex = FALSE;
++				/* next function may work as memory barrier */
++			relock:
++				__sync_fetch_and_add(&(lock->writer_count),1);
++
++#ifdef UNIV_SYNC_DEBUG
++				rw_lock_add_debug_info(lock, 0, RW_LOCK_EX, file_name, line);
++#endif
++
++				lock->last_x_file_name = file_name;
++				lock->last_x_line = line;
++
++				ut_ad(rw_lock_validate(lock));
++
++				return(TRUE);
++			} else {
++				/* x-unlock */
++				__sync_fetch_and_add(&(lock->lock_word),
++					RW_LOCK_BIAS);
++			}
++		} else {
++			/* fail (x-lock) */
++			__sync_fetch_and_add(&(lock->lock_word),RW_LOCK_BIAS);
++		}
++	}
++
++	if (lock->pass == 0
++			&& os_thread_eq(lock->writer_thread, curr_thread)
++			&& rw_lock_get_writer(lock) == RW_LOCK_EX) {
++		goto relock;
++	}
++
++	ut_ad(rw_lock_validate(lock));
++
++	return(FALSE);
++#else
+ 	mutex_enter(rw_lock_get_mutex(lock));
+ 
+ 	if (UNIV_UNLIKELY(rw_lock_get_reader_count(lock) != 0)) {
+@@ -339,6 +474,7 @@
+         ut_ad(rw_lock_validate(lock));
+ 
+ 	return(success);
++#endif
+ }
+ 
+ /**********************************************************************
+@@ -354,16 +490,33 @@
+ #endif
+ 	)
+ {
++#ifndef HAVE_ATOMIC_BUILTINS
+ 	mutex_t*	mutex	= &(lock->mutex);
+-	ibool		sg 	= FALSE;
++#endif
++	ibool		x_sg 	= FALSE;
++	ibool		wx_sg	= FALSE;
++#ifdef HAVE_ATOMIC_BUILTINS
++	ibool		last	= FALSE;
++#endif
+ 
++#ifndef HAVE_ATOMIC_BUILTINS
+         /* Acquire the mutex protecting the rw-lock fields */
+ 	mutex_enter(mutex);
++#endif
+ 
+ 	/* Reset the shared lock by decrementing the reader count */
+ 
+ 	ut_a(lock->reader_count > 0);
++#ifdef HAVE_ATOMIC_BUILTINS
++	/* unlock lock_word */
++	__sync_fetch_and_add(&(lock->lock_word),1);
++
++	if(__sync_sub_and_fetch(&(lock->reader_count),1) == 0) {
++		last = TRUE;
++	}
++#else
+ 	lock->reader_count--;
++#endif
+ 
+ #ifdef UNIV_SYNC_DEBUG
+ 	rw_lock_remove_debug_info(lock, pass, RW_LOCK_SHARED);
+@@ -372,20 +525,36 @@
+ 	/* If there may be waiters and this was the last s-lock,
+ 	signal the object */
+ 
+-	if (UNIV_UNLIKELY(lock->waiters)
++#ifdef HAVE_ATOMIC_BUILTINS
++	if (UNIV_UNLIKELY(last && lock->wait_ex_waiters)) {
++#else
++	if (UNIV_UNLIKELY(lock->wait_ex_waiters)
+ 			&& lock->reader_count == 0) {
+-	       	sg = TRUE;
++#endif
++	       	wx_sg = TRUE;
+ 
+-		rw_lock_set_waiters(lock, 0);
++		rw_lock_set_wx_waiters(lock, 0);
++	}
++#ifdef HAVE_ATOMIC_BUILTINS
++	else if (UNIV_UNLIKELY(last && lock->x_waiters)) {
++#else
++	else if (UNIV_UNLIKELY(lock->x_waiters)
++			&& lock->reader_count == 0) {
++#endif
++		x_sg = TRUE;
++
++		rw_lock_set_x_waiters(lock, 0);
+ 	}
+ 	
++#ifndef HAVE_ATOMIC_BUILTINS
+ 	mutex_exit(mutex);
++#endif
+ 
+-	if (UNIV_UNLIKELY(sg)) {
+-#ifdef __WIN__
++	if (UNIV_UNLIKELY(wx_sg)) {
+ 		os_event_set(lock->wait_ex_event);
+-#endif
+-		os_event_set(lock->event);
++		sync_array_object_signalled(sync_primary_wait_array);
++	} else if (UNIV_UNLIKELY(x_sg)) {
++		os_event_set(lock->x_event);
+ 		sync_array_object_signalled(sync_primary_wait_array);
+ 	}
+ 
+@@ -409,13 +578,22 @@
+ 
+ 	ut_ad(lock->reader_count > 0);
+ 
++#ifdef HAVE_ATOMIC_BUILTINS
++	__sync_sub_and_fetch(&(lock->reader_count),1);
++#else
+ 	lock->reader_count--;
++#endif
+ 
+ #ifdef UNIV_SYNC_DEBUG
+ 	rw_lock_remove_debug_info(lock, 0, RW_LOCK_SHARED);
+ #endif
+ 
++#ifdef HAVE_ATOMIC_BUILTINS
++	ut_ad(!lock->s_waiters);
++	ut_ad(!lock->x_waiters);
++#else
+ 	ut_ad(!lock->waiters);
++#endif
+         ut_ad(rw_lock_validate(lock));
+ #ifdef UNIV_SYNC_PERF_STAT
+ 	rw_s_exit_count++;
+@@ -435,41 +613,81 @@
+ #endif
+ 	)
+ {
+-	ibool	sg 	= FALSE;
++#ifdef HAVE_ATOMIC_BUILTINS
++	ibool	last	= FALSE;
++#endif
++	ibool	s_sg	= FALSE;
++	ibool	x_sg	= FALSE;
+ 
++#ifndef HAVE_ATOMIC_BUILTINS
+         /* Acquire the mutex protecting the rw-lock fields */
+ 	mutex_enter(&(lock->mutex));
++#endif
+ 
+ 	/* Reset the exclusive lock if this thread no longer has an x-mode
+ 	lock */
+ 
+ 	ut_ad(lock->writer_count > 0);
+ 
++#ifdef HAVE_ATOMIC_BUILTINS
++	if(__sync_sub_and_fetch(&(lock->writer_count),1) == 0) {
++		last = TRUE;
++	}
++
++	if (last) {
++		/* unlock lock_word */
++		__sync_fetch_and_add(&(lock->lock_word),RW_LOCK_BIAS);
++
++		/* FIXME: It is a value of bad manners for pthread.
++		          But we shouldn't keep an ID of not-owner. */
++		lock->writer_thread = -1;
++
++		/* atomic operation may be safer about memory order. */
++		rw_lock_set_writer(lock, RW_LOCK_NOT_LOCKED);
++		__sync_synchronize();
++	}
++#else
+ 	lock->writer_count--;
+ 
+ 	if (lock->writer_count == 0) {
+ 		rw_lock_set_writer(lock, RW_LOCK_NOT_LOCKED);
+ 	}
++#endif
+ 
+ #ifdef UNIV_SYNC_DEBUG
+ 	rw_lock_remove_debug_info(lock, pass, RW_LOCK_EX);
+ #endif
+ 	
+ 	/* If there may be waiters, signal the lock */
+-	if (UNIV_UNLIKELY(lock->waiters)
+-			&& lock->writer_count == 0) {
+-
+-	       	sg = TRUE;
+-		rw_lock_set_waiters(lock, 0);
++#ifdef HAVE_ATOMIC_BUILTINS
++	if (last) {
++#else
++	if (lock->writer_count == 0) {
++#endif
++		if(lock->s_waiters){
++			s_sg = TRUE;
++			rw_lock_set_s_waiters(lock, 0);
++		}
++		if(lock->x_waiters){
++			x_sg = TRUE;
++			rw_lock_set_x_waiters(lock, 0);
++		}
+ 	}
+ 	
++#ifndef HAVE_ATOMIC_BUILTINS
+ 	mutex_exit(&(lock->mutex));
++#endif
+ 
+-	if (UNIV_UNLIKELY(sg)) {
++	if (UNIV_UNLIKELY(s_sg)) {
++		os_event_set(lock->s_event);
++		sync_array_object_signalled(sync_primary_wait_array);
++	}
++	if (UNIV_UNLIKELY(x_sg)) {
+ #ifdef __WIN__
++		/* I doubt the necessity of it. */
+ 		os_event_set(lock->wait_ex_event);
+ #endif
+-		os_event_set(lock->event);
++		os_event_set(lock->x_event);
+ 		sync_array_object_signalled(sync_primary_wait_array);
+ 	}
+ 
+@@ -494,9 +712,13 @@
+ 
+ 	ut_ad(lock->writer_count > 0);
+ 
++#ifdef HAVE_ATOMIC_BUILTINS
++	if(__sync_sub_and_fetch(&(lock->writer_count),1) == 0) {
++#else
+ 	lock->writer_count--;
+ 
+ 	if (lock->writer_count == 0) {
++#endif
+ 		rw_lock_set_writer(lock, RW_LOCK_NOT_LOCKED);
+ 	}
+ 
+@@ -504,7 +726,12 @@
+ 	rw_lock_remove_debug_info(lock, 0, RW_LOCK_EX);
+ #endif
+ 
++#ifdef HAVE_ATOMIC_BUILTINS
++	ut_ad(!lock->s_waiters);
++	ut_ad(!lock->x_waiters);
++#else
+ 	ut_ad(!lock->waiters);
++#endif
+         ut_ad(rw_lock_validate(lock));
+ 
+ #ifdef UNIV_SYNC_PERF_STAT
+diff -r 962aec0d731c innobase/sync/sync0arr.c
+--- a/innobase/sync/sync0arr.c	Thu Oct 09 08:28:53 2008 -0700
++++ b/innobase/sync/sync0arr.c	Thu Oct 09 08:30:28 2008 -0700
+@@ -309,13 +309,13 @@
+ {
+ 	if (type == SYNC_MUTEX) {
+ 		return(os_event_reset(((mutex_t *) object)->event));
+-#ifdef __WIN__
+ 	} else if (type == RW_LOCK_WAIT_EX) {
+ 		return(os_event_reset(
+ 		       ((rw_lock_t *) object)->wait_ex_event));
+-#endif
+-	} else {
+-		return(os_event_reset(((rw_lock_t *) object)->event));
++	} else if (type == RW_LOCK_SHARED) {
++		return(os_event_reset(((rw_lock_t *) object)->s_event));
++	} else { /* RW_LOCK_EX */
++		return(os_event_reset(((rw_lock_t *) object)->x_event));
+ 	}
+ }		
+ 
+@@ -415,15 +415,12 @@
+ 
+ 	if (cell->request_type == SYNC_MUTEX) {
+ 		event = ((mutex_t*) cell->wait_object)->event;
+-#ifdef __WIN__
+-	/* On windows if the thread about to wait is the one which
+-	has set the state of the rw_lock to RW_LOCK_WAIT_EX, then
+-	it waits on a special event i.e.: wait_ex_event. */
+ 	} else if (cell->request_type == RW_LOCK_WAIT_EX) {
+ 		event = ((rw_lock_t*) cell->wait_object)->wait_ex_event;
+-#endif
+-	} else {	
+-		event = ((rw_lock_t*) cell->wait_object)->event;
++	} else if (cell->request_type == RW_LOCK_SHARED) {
++		event = ((rw_lock_t*) cell->wait_object)->s_event;
++	} else {
++		event = ((rw_lock_t*) cell->wait_object)->x_event;
+ 	}
+ 
+        	cell->waiting = TRUE;
+@@ -464,6 +461,7 @@
+ 	mutex_t*	mutex;
+ 	rw_lock_t*	rwlock;
+ 	ulint		type;
++	ulint		writer;
+ 
+ 	type = cell->request_type;
+ 
+@@ -492,12 +490,10 @@
+ 			(ulong) mutex->waiters);
+ 
+ 	} else if (type == RW_LOCK_EX
+-#ifdef __WIN__
+ 		   || type == RW_LOCK_WAIT_EX
+-#endif
+ 		   || type == RW_LOCK_SHARED) {
+ 
+-		fputs(type == RW_LOCK_EX ? "X-lock on" : "S-lock on", file);
++		fputs(type == RW_LOCK_SHARED ? "S-lock on" : "X-lock on", file);
+ 
+ 		rwlock = cell->old_wait_rw_lock;
+ 
+@@ -505,21 +501,23 @@
+ 			" RW-latch at %p created in file %s line %lu\n",
+ 			rwlock, rwlock->cfile_name,
+ 			(ulong) rwlock->cline);
+-		if (rwlock->writer != RW_LOCK_NOT_LOCKED) {
++		writer = rw_lock_get_writer(rwlock);
++		if (writer != RW_LOCK_NOT_LOCKED) {
+ 			fprintf(file,
+ 			"a writer (thread id %lu) has reserved it in mode %s",
+ 				(ulong) os_thread_pf(rwlock->writer_thread),
+-				rwlock->writer == RW_LOCK_EX
++				writer == RW_LOCK_EX
+ 				? " exclusive\n"
+ 				: " wait exclusive\n");
+ 		}
+ 		
+ 		fprintf(file,
+-			"number of readers %lu, waiters flag %lu\n"
++			"number of readers %lu, s_waiters flag %lu, x_waiters flag %lu\n"
+ 			"Last time read locked in file %s line %lu\n"
+ 			"Last time write locked in file %s line %lu\n",
+ 			(ulong) rwlock->reader_count,
+-			(ulong) rwlock->waiters,
++			(ulong) rwlock->s_waiters,
++			(ulong) (rwlock->x_waiters || rwlock->wait_ex_waiters),
+ 			rwlock->last_s_file_name,
+ 			(ulong) rwlock->last_s_line,
+ 			rwlock->last_x_file_name,
+@@ -839,11 +837,15 @@
+ /*========================*/
+ 	sync_array_t*	arr)	/* in: wait array */
+ {
++#ifdef HAVE_ATOMIC_BUILTINS
++	__sync_fetch_and_add(&(arr->sg_count),1);
++#else
+         sync_array_enter(arr);
+ 
+ 	arr->sg_count++;
+ 
+         sync_array_exit(arr);
++#endif
+ }
+ 
+ /**************************************************************************
+@@ -880,19 +882,23 @@
+ 
+ 					mutex = cell->wait_object;
+ 					os_event_set(mutex->event);
+-#ifdef __WIN__
+ 				} else if (cell->request_type
+ 					   == RW_LOCK_WAIT_EX) {
+ 					rw_lock_t*	lock;
+ 
+ 					lock = cell->wait_object;
+ 					os_event_set(lock->wait_ex_event);
+-#endif
+-				} else {
++				} else if (cell->request_type
++					   == RW_LOCK_SHARED) {
+ 					rw_lock_t*	lock;
+ 
+ 					lock = cell->wait_object;
+-					os_event_set(lock->event);
++					os_event_set(lock->s_event);
++				} else {
++					rw_lock_t*      lock;
++
++					lock = cell->wait_object;
++					os_event_set(lock->x_event);
+ 				}
+                         }
+                 }
+diff -r 962aec0d731c innobase/sync/sync0rw.c
+--- a/innobase/sync/sync0rw.c	Thu Oct 09 08:28:53 2008 -0700
++++ b/innobase/sync/sync0rw.c	Thu Oct 09 08:30:28 2008 -0700
+@@ -99,6 +99,7 @@
+ 	object is created, then the following call initializes
+ 	the sync system. */
+ 
++#ifndef HAVE_ATOMIC_BUILTINS
+ 	mutex_create(rw_lock_get_mutex(lock));
+ 	mutex_set_level(rw_lock_get_mutex(lock), SYNC_NO_ORDER_CHECK);
+ 
+@@ -108,8 +109,14 @@
+ 	lock->mutex.cmutex_name = cmutex_name;
+ 	lock->mutex.mutex_type = 1;
+ #endif /* UNIV_DEBUG && !UNIV_HOTBACKUP */
++#endif /* !HAVE_ATOMIC_BUILTINS */
+   
+-	rw_lock_set_waiters(lock, 0);
++#ifdef HAVE_ATOMIC_BUILTINS
++	lock->lock_word = RW_LOCK_BIAS;
++#endif
++	rw_lock_set_s_waiters(lock, 0);
++	rw_lock_set_x_waiters(lock, 0);
++	rw_lock_set_wx_waiters(lock, 0);
+ 	rw_lock_set_writer(lock, RW_LOCK_NOT_LOCKED);
+ 	lock->writer_count = 0;
+ 	rw_lock_set_reader_count(lock, 0);
+@@ -130,11 +137,9 @@
+ 	lock->last_x_file_name = "not yet reserved";
+ 	lock->last_s_line = 0;
+ 	lock->last_x_line = 0;
+-	lock->event = os_event_create(NULL);
+-
+-#ifdef __WIN__
++	lock->s_event = os_event_create(NULL);
++	lock->x_event = os_event_create(NULL);
+ 	lock->wait_ex_event = os_event_create(NULL);
+-#endif
+ 
+ 	mutex_enter(&rw_lock_list_mutex);
+ 	
+@@ -162,19 +167,21 @@
+ 	ut_a(rw_lock_validate(lock));
+ #endif /* UNIV_DEBUG */
+ 	ut_a(rw_lock_get_writer(lock) == RW_LOCK_NOT_LOCKED);
+-	ut_a(rw_lock_get_waiters(lock) == 0);
++	ut_a(rw_lock_get_s_waiters(lock) == 0);
++	ut_a(rw_lock_get_x_waiters(lock) == 0);
++	ut_a(rw_lock_get_wx_waiters(lock) == 0);
+ 	ut_a(rw_lock_get_reader_count(lock) == 0);
+ 	
+ 	lock->magic_n = 0;
+ 
++#ifndef HAVE_ATOMIC_BUILTINS
+ 	mutex_free(rw_lock_get_mutex(lock));
++#endif
+ 
+ 	mutex_enter(&rw_lock_list_mutex);
+-	os_event_free(lock->event);
+-
+-#ifdef __WIN__
++	os_event_free(lock->s_event);
++	os_event_free(lock->x_event);
+ 	os_event_free(lock->wait_ex_event);
+-#endif
+ 
+ 	if (UT_LIST_GET_PREV(list, lock)) {
+ 		ut_a(UT_LIST_GET_PREV(list, lock)->magic_n == RW_LOCK_MAGIC_N);
+@@ -192,6 +199,8 @@
+ Checks that the rw-lock has been initialized and that there are no
+ simultaneous shared and exclusive locks. */
+ 
++/* MEMO: If HAVE_ATOMIC_BUILTINS, we should use this function statically. */
++
+ ibool
+ rw_lock_validate(
+ /*=============*/
+@@ -199,7 +208,9 @@
+ {
+ 	ut_a(lock);
+ 
++#ifndef HAVE_ATOMIC_BUILTINS
+ 	mutex_enter(rw_lock_get_mutex(lock));
++#endif
+ 
+ 	ut_a(lock->magic_n == RW_LOCK_MAGIC_N);
+ 	ut_a((rw_lock_get_reader_count(lock) == 0)
+@@ -207,11 +218,17 @@
+ 	ut_a((rw_lock_get_writer(lock) == RW_LOCK_EX)
+ 	     || (rw_lock_get_writer(lock) == RW_LOCK_WAIT_EX)
+ 	     || (rw_lock_get_writer(lock) == RW_LOCK_NOT_LOCKED));
+-	ut_a((rw_lock_get_waiters(lock) == 0)
+-	     || (rw_lock_get_waiters(lock) == 1));
++	ut_a((rw_lock_get_s_waiters(lock) == 0)
++	     || (rw_lock_get_s_waiters(lock) == 1));
++	ut_a((rw_lock_get_x_waiters(lock) == 0)
++	     || (rw_lock_get_x_waiters(lock) == 1));
++	ut_a((rw_lock_get_wx_waiters(lock) == 0)
++	     || (rw_lock_get_wx_waiters(lock) == 1));
+ 	ut_a((lock->writer != RW_LOCK_EX) || (lock->writer_count > 0));
+ 	     
++#ifndef HAVE_ATOMIC_BUILTINS
+ 	mutex_exit(rw_lock_get_mutex(lock));
++#endif
+ 
+ 	return(TRUE);
+ }
+@@ -237,13 +254,14 @@
+         ut_ad(rw_lock_validate(lock));
+ 
+ lock_loop:
++        i = 0;
++spin_loop:
+ 	rw_s_spin_wait_count++;
+ 
+ 	/* Spin waiting for the writer field to become free */
+-        i = 0;
+ 
+-        while (rw_lock_get_writer(lock) != RW_LOCK_NOT_LOCKED
+-						&& i < SYNC_SPIN_ROUNDS) {
++        while (i < SYNC_SPIN_ROUNDS
++			&& rw_lock_get_writer(lock) != RW_LOCK_NOT_LOCKED) {
+         	if (srv_spin_wait_delay) {
+         		ut_delay(ut_rnd_interval(0, srv_spin_wait_delay));
+         	}
+@@ -262,15 +280,27 @@
+ 		lock->cfile_name, (ulong) lock->cline, (ulong) i);
+ 	}
+ 
++#ifndef HAVE_ATOMIC_BUILTINS
+ 	mutex_enter(rw_lock_get_mutex(lock));
++#endif
+ 
+         /* We try once again to obtain the lock */
+ 
+ 	if (TRUE == rw_lock_s_lock_low(lock, pass, file_name, line)) {
++#ifndef HAVE_ATOMIC_BUILTINS
+ 		mutex_exit(rw_lock_get_mutex(lock));
++#endif
+ 
+ 		return; /* Success */
+ 	} else {
++#ifdef HAVE_ATOMIC_BUILTINS
++		/* like sync0sync.c doing */
++		i++;
++
++		if (i < SYNC_SPIN_ROUNDS) {
++			goto spin_loop;
++		}
++#endif
+ 		/* If we get here, locking did not succeed, we may
+ 		suspend the thread to wait in the wait array */
+ 
+@@ -281,9 +311,19 @@
+ 				file_name, line,
+ 				&index);
+ 
+-		rw_lock_set_waiters(lock, 1);
++		rw_lock_set_s_waiters(lock, 1);
+ 
++#ifdef HAVE_ATOMIC_BUILTINS
++		/* like sync0sync.c doing */
++		for (i = 0; i < 4; i++) {
++			if (TRUE == rw_lock_s_lock_low(lock, pass, file_name, line)) {
++				sync_array_free_cell(sync_primary_wait_array, index);
++				return; /* Success */
++			}
++		}
++#else
+ 		mutex_exit(rw_lock_get_mutex(lock));
++#endif
+ 
+ 		if (srv_print_latch_waits) {
+ 			fprintf(stderr,
+@@ -318,13 +358,19 @@
+ {
+ 	ut_ad(rw_lock_is_locked(lock, RW_LOCK_EX));
+ 
++#ifndef HAVE_ATOMIC_BUILTINS
+ 	mutex_enter(&(lock->mutex));
++#endif
+ 
+ 	lock->writer_thread = os_thread_get_curr_id();
+ 
+ 	lock->pass = 0;
+ 
++#ifndef HAVE_ATOMIC_BUILTINS
+ 	mutex_exit(&(lock->mutex));
++#else
++	__sync_synchronize();
++#endif
+ }
+ 
+ /**********************************************************************
+@@ -342,6 +388,89 @@
+ 	const char*	file_name,/* in: file name where lock requested */
+ 	ulint		line)	/* in: line where requested */
+ {
++#ifdef HAVE_ATOMIC_BUILTINS
++	os_thread_id_t	curr_thread	= os_thread_get_curr_id();
++
++	/* try to lock writer */
++	if(__sync_lock_test_and_set(&(lock->writer),RW_LOCK_EX)
++			== RW_LOCK_NOT_LOCKED) {
++		/* success */
++		/* obtain RW_LOCK_WAIT_EX right */
++		lock->writer_thread = curr_thread;
++		lock->pass = pass;
++		lock->writer_is_wait_ex = TRUE;
++		/* atomic operation may be safer about memory order. */
++		__sync_synchronize();
++#ifdef UNIV_SYNC_DEBUG
++		rw_lock_add_debug_info(lock, pass, RW_LOCK_WAIT_EX,
++					file_name, line);
++#endif
++	}
++
++	if (!os_thread_eq(lock->writer_thread, curr_thread)) {
++		return(RW_LOCK_NOT_LOCKED);
++	}
++
++	switch(rw_lock_get_writer(lock)) {
++	    case RW_LOCK_WAIT_EX:
++		/* have right to try x-lock */
++		if (lock->lock_word == RW_LOCK_BIAS) {
++			/* try x-lock */
++			if(__sync_sub_and_fetch(&(lock->lock_word),
++					RW_LOCK_BIAS) == 0) {
++				/* success */
++				lock->pass = pass;
++				lock->writer_is_wait_ex = FALSE;
++				__sync_fetch_and_add(&(lock->writer_count),1);
++
++#ifdef UNIV_SYNC_DEBUG
++				rw_lock_remove_debug_info(lock, pass, RW_LOCK_WAIT_EX);
++				rw_lock_add_debug_info(lock, pass, RW_LOCK_EX,
++							file_name, line);
++#endif
++
++				lock->last_x_file_name = file_name;
++				lock->last_x_line = line;
++
++				/* Locking succeeded, we may return */
++				return(RW_LOCK_EX);
++			} else {
++				/* fail */
++				__sync_fetch_and_add(&(lock->lock_word),
++					RW_LOCK_BIAS);
++			}
++		}
++		/* There are readers, we have to wait */
++		return(RW_LOCK_WAIT_EX);
++
++		break;
++
++	    case RW_LOCK_EX:
++		/* already have x-lock */
++		if ((lock->pass == 0)&&(pass == 0)) {
++			__sync_fetch_and_add(&(lock->writer_count),1);
++
++#ifdef UNIV_SYNC_DEBUG
++			rw_lock_add_debug_info(lock, pass, RW_LOCK_EX, file_name,
++						line);
++#endif
++
++			lock->last_x_file_name = file_name;
++			lock->last_x_line = line;
++
++			/* Locking succeeded, we may return */
++			return(RW_LOCK_EX);
++		}
++
++		return(RW_LOCK_NOT_LOCKED);
++
++		break;
++
++	    default: /* ??? */
++		return(RW_LOCK_NOT_LOCKED);
++	}
++#else /* HAVE_ATOMIC_BUILTINS */
++
+ #ifdef UNIV_SYNC_DEBUG
+ 	ut_ad(mutex_own(rw_lock_get_mutex(lock)));
+ #endif /* UNIV_SYNC_DEBUG */
+@@ -423,6 +552,7 @@
+ 		/* Locking succeeded, we may return */
+ 		return(RW_LOCK_EX);
+ 	}
++#endif /* HAVE_ATOMIC_BUILTINS */
+ 
+ 	/* Locking did not succeed */
+ 	return(RW_LOCK_NOT_LOCKED);
+@@ -448,19 +578,33 @@
+ 	ulint		line)	/* in: line where requested */
+ {
+         ulint	index;  /* index of the reserved wait cell */
+-        ulint	state;	/* lock state acquired */
++        ulint	state = RW_LOCK_NOT_LOCKED;	/* lock state acquired */
++#ifdef HAVE_ATOMIC_BUILTINS
++	ulint	prev_state = RW_LOCK_NOT_LOCKED;
++#endif
+         ulint	i;	/* spin round count */
+         
+         ut_ad(rw_lock_validate(lock));
+ 
+ lock_loop:
++	i = 0;
++
++#ifdef HAVE_ATOMIC_BUILTINS
++	prev_state = state;
++#else
+         /* Acquire the mutex protecting the rw-lock fields */
+ 	mutex_enter_fast(&(lock->mutex));
++#endif
+ 
+ 	state = rw_lock_x_lock_low(lock, pass, file_name, line);
+ 		
++#ifdef HAVE_ATOMIC_BUILTINS
++	if (state != prev_state) i=0; /* if progress, reset counter. */
++#else
+ 	mutex_exit(&(lock->mutex));
++#endif
+         
++spin_loop:
+ 	if (state == RW_LOCK_EX) {
+ 
+ 		return;	/* Locking succeeded */
+@@ -468,10 +612,9 @@
+ 	} else if (state == RW_LOCK_NOT_LOCKED) {
+ 
+  		/* Spin waiting for the writer field to become free */
+-		i = 0;
+ 
+-        	while (rw_lock_get_writer(lock) != RW_LOCK_NOT_LOCKED 
+-               					&& i < SYNC_SPIN_ROUNDS) {
++        	while (i < SYNC_SPIN_ROUNDS
++			&& rw_lock_get_writer(lock) != RW_LOCK_NOT_LOCKED) {
+         		if (srv_spin_wait_delay) {
+ 				ut_delay(ut_rnd_interval(0,
+ 							srv_spin_wait_delay));
+@@ -485,9 +628,12 @@
+         } else if (state == RW_LOCK_WAIT_EX) {
+ 
+  		/* Spin waiting for the reader count field to become zero */
+-		i = 0;
+ 
++#ifdef HAVE_ATOMIC_BUILTINS
++		while (lock->lock_word != RW_LOCK_BIAS
++#else
+         	while (rw_lock_get_reader_count(lock) != 0 
++#endif
+                					&& i < SYNC_SPIN_ROUNDS) {
+         		if (srv_spin_wait_delay) {
+ 				ut_delay(ut_rnd_interval(0,
+@@ -500,7 +646,6 @@
+ 			os_thread_yield();
+ 		}
+         } else {
+-		i = 0; /* Eliminate a compiler warning */
+ 		ut_error;
+ 	}	
+ 
+@@ -516,34 +661,69 @@
+         /* We try once again to obtain the lock. Acquire the mutex protecting
+ 	the rw-lock fields */
+ 
++#ifdef HAVE_ATOMIC_BUILTINS
++	prev_state = state;
++#else
+ 	mutex_enter(rw_lock_get_mutex(lock));
++#endif
+ 
+ 	state = rw_lock_x_lock_low(lock, pass, file_name, line);
+ 
++#ifdef HAVE_ATOMIC_BUILTINS
++	if (state != prev_state) i=0; /* if progress, reset counter. */
++#endif
++
+ 	if (state == RW_LOCK_EX) {
++#ifndef HAVE_ATOMIC_BUILTINS
+ 		mutex_exit(rw_lock_get_mutex(lock));
++#endif
+ 
+ 		return;	/* Locking succeeded */
+ 	}
++
++#ifdef HAVE_ATOMIC_BUILTINS
++	/* like sync0sync.c doing */
++	i++;
++
++	if (i < SYNC_SPIN_ROUNDS) {
++		goto spin_loop;
++	}
++#endif
+ 
+ 	rw_x_system_call_count++;
+ 
+         sync_array_reserve_cell(sync_primary_wait_array,
+ 				lock,
+-#ifdef __WIN__
+-				/* On windows RW_LOCK_WAIT_EX signifies
+-				that this thread should wait on the
+-				special wait_ex_event. */
+ 				(state == RW_LOCK_WAIT_EX)
+ 				 ? RW_LOCK_WAIT_EX :
+-#endif
+ 				RW_LOCK_EX,
+ 				file_name, line,
+ 				&index);
+ 
+-	rw_lock_set_waiters(lock, 1);
++	if (state == RW_LOCK_WAIT_EX) {
++		rw_lock_set_wx_waiters(lock, 1);
++	} else {
++		rw_lock_set_x_waiters(lock, 1);
++	}
+ 
++#ifdef HAVE_ATOMIC_BUILTINS
++	/* like sync0sync.c doing */
++	for (i = 0; i < 4; i++) {
++		prev_state = state;
++		state = rw_lock_x_lock_low(lock, pass, file_name, line);
++		if (state == RW_LOCK_EX) {
++			sync_array_free_cell(sync_primary_wait_array, index);
++			return; /* Locking succeeded */
++		}
++		if (state != prev_state) {
++			/* retry! */
++			sync_array_free_cell(sync_primary_wait_array, index);
++			goto lock_loop;
++		}
++	}
++#else
+ 	mutex_exit(rw_lock_get_mutex(lock));
++#endif
+ 
+ 	if (srv_print_latch_waits) {
+ 		fprintf(stderr,
+@@ -718,7 +898,9 @@
+ 	ut_ad(lock);
+ 	ut_ad(rw_lock_validate(lock));
+ 
++#ifndef HAVE_ATOMIC_BUILTINS
+ 	mutex_enter(&(lock->mutex));
++#endif
+ 
+ 	info = UT_LIST_GET_FIRST(lock->debug_list);
+ 
+@@ -728,7 +910,9 @@
+ 		    && (info->pass == 0)
+ 		    && (info->lock_type == lock_type)) {
+ 
++#ifndef HAVE_ATOMIC_BUILTINS
+ 			mutex_exit(&(lock->mutex));
++#endif
+ 		    	/* Found! */
+ 
+ 		    	return(TRUE);
+@@ -736,7 +920,9 @@
+ 
+ 		info = UT_LIST_GET_NEXT(list, info);
+ 	}
++#ifndef HAVE_ATOMIC_BUILTINS
+ 	mutex_exit(&(lock->mutex));
++#endif
+ 
+ 	return(FALSE);
+ }
+@@ -758,21 +944,25 @@
+ 	ut_ad(lock);
+ 	ut_ad(rw_lock_validate(lock));
+ 	
++#ifndef HAVE_ATOMIC_BUILTINS
+ 	mutex_enter(&(lock->mutex));
++#endif
+ 
+ 	if (lock_type == RW_LOCK_SHARED) {
+ 		if (lock->reader_count > 0) {
+ 			ret = TRUE;
+ 		}
+ 	} else if (lock_type == RW_LOCK_EX) {
+-		if (lock->writer == RW_LOCK_EX) {
++		if (rw_lock_get_writer(lock) == RW_LOCK_EX) {
+ 			ret = TRUE;
+ 		}
+ 	} else {
+ 		ut_error;
+ 	}
+ 
++#ifndef HAVE_ATOMIC_BUILTINS
+ 	mutex_exit(&(lock->mutex));
++#endif
+ 
+ 	return(ret);
+ }
+@@ -801,16 +991,26 @@
+ 
+ 		count++;
+ 
++#ifndef HAVE_ATOMIC_BUILTINS
+ 		mutex_enter(&(lock->mutex));
++#endif
+ 
+ 		if ((rw_lock_get_writer(lock) != RW_LOCK_NOT_LOCKED)
+ 		    || (rw_lock_get_reader_count(lock) != 0)
+-		    || (rw_lock_get_waiters(lock) != 0)) {
++		    || (rw_lock_get_s_waiters(lock) != 0)
++		    || (rw_lock_get_x_waiters(lock) != 0)
++		    || (rw_lock_get_wx_waiters(lock) != 0)) {
+ 
+ 			fprintf(stderr, "RW-LOCK: %p ", lock);
+ 
+-			if (rw_lock_get_waiters(lock)) {
+-				fputs(" Waiters for the lock exist\n", stderr);
++			if (rw_lock_get_s_waiters(lock)) {
++				fputs(" s_waiters for the lock exist,", stderr);
++			}
++			if (rw_lock_get_x_waiters(lock)) {
++				fputs(" x_waiters for the lock exist\n", stderr);
++			}
++			if (rw_lock_get_wx_waiters(lock)) {
++				fputs(" wait_ex_waiters for the lock exist\n", stderr);
+ 			} else {
+ 				putc('\n', stderr);
+ 			}
+@@ -822,7 +1022,9 @@
+ 			}
+ 		}
+ 
++#ifndef HAVE_ATOMIC_BUILTINS
+ 		mutex_exit(&(lock->mutex));
++#endif
+ 		lock = UT_LIST_GET_NEXT(list, lock);
+ 	}
+ 
+@@ -847,10 +1049,18 @@
+ 
+ 	if ((rw_lock_get_writer(lock) != RW_LOCK_NOT_LOCKED)
+ 	    || (rw_lock_get_reader_count(lock) != 0)
+-	    || (rw_lock_get_waiters(lock) != 0)) {
++	    || (rw_lock_get_s_waiters(lock) != 0)
++	    || (rw_lock_get_x_waiters(lock) != 0)
++	    || (rw_lock_get_wx_waiters(lock) != 0)) {
+ 
+-		if (rw_lock_get_waiters(lock)) {
+-			fputs(" Waiters for the lock exist\n", stderr);
++		if (rw_lock_get_s_waiters(lock)) {
++			fputs(" s_waiters for the lock exist,", stderr);
++		}
++		if (rw_lock_get_x_waiters(lock)) {
++			fputs(" x_waiters for the lock exist\n", stderr);
++		}
++		if (rw_lock_get_wx_waiters(lock)) {
++			fputs(" wait_ex_waiters for the lock exist\n", stderr);
+ 		} else {
+ 			putc('\n', stderr);
+ 		}
+@@ -909,14 +1119,18 @@
+ 	lock = UT_LIST_GET_FIRST(rw_lock_list);
+ 
+ 	while (lock != NULL) {
++#ifndef HAVE_ATOMIC_BUILTINS
+ 		mutex_enter(rw_lock_get_mutex(lock));
++#endif
+ 
+ 		if ((rw_lock_get_writer(lock) != RW_LOCK_NOT_LOCKED)
+ 				|| (rw_lock_get_reader_count(lock) != 0)) {
+ 			count++;
+ 		}
+ 
++#ifndef HAVE_ATOMIC_BUILTINS
+ 		mutex_exit(rw_lock_get_mutex(lock));
++#endif
+ 		lock = UT_LIST_GET_NEXT(list, lock);
+ 	}
+ 
+diff -r 962aec0d731c patch_info/innodb_rw_lock.info
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/patch_info/innodb_rw_lock.info	Thu Oct 09 08:30:28 2008 -0700
+@@ -0,0 +1,6 @@
++File=innodb_rw_lock.patch
++Name=Fix of InnoDB rw_locks
++Version=1.0
++Author=Yasufumi Kinoshita
++License=BSD
++Comment=