5.5 merge

mysql-test/suite/sys_vars/r/innodb_stats_traditional_basic.result

 SET @start_global_value = @@global.innodb_stats_traditional;
 SELECT @start_global_value;
 @start_global_value
-0
+1
 Valid values are 'ON' and 'OFF' 
 select @@global.innodb_stats_traditional in (0, 1);
 @@global.innodb_stats_traditional in (0, 1)
 1
 select @@global.innodb_stats_traditional;
 @@global.innodb_stats_traditional
-0
+1
 select @@session.innodb_stats_traditional;
 ERROR HY000: Variable 'innodb_stats_traditional' is a GLOBAL variable
 show global variables like 'innodb_stats_traditional';
 Variable_name	Value
-innodb_stats_traditional	OFF
+innodb_stats_traditional	ON
 show session variables like 'innodb_stats_traditional';
 Variable_name	Value
-innodb_stats_traditional	OFF
+innodb_stats_traditional	ON
 select * from information_schema.global_variables where variable_name='innodb_stats_traditional';
 VARIABLE_NAME	VARIABLE_VALUE
-INNODB_STATS_TRADITIONAL	OFF
+INNODB_STATS_TRADITIONAL	ON
 select * from information_schema.session_variables where variable_name='innodb_stats_traditional';
 VARIABLE_NAME	VARIABLE_VALUE
-INNODB_STATS_TRADITIONAL	OFF
+INNODB_STATS_TRADITIONAL	ON
 set global innodb_stats_traditional='OFF';
 select @@global.innodb_stats_traditional;
 @@global.innodb_stats_traditional
@@ -89,4 +89,4 @@ ERROR 42000: Variable 'innodb_stats_traditional' can't be set to the value of 'A
 SET @@global.innodb_stats_traditional = @start_global_value;
 SELECT @@global.innodb_stats_traditional;
 @@global.innodb_stats_traditional
-0
+1

storage/innobase/handler/ha_innodb.cc

@@ -16364,8 +16364,8 @@ static MYSQL_SYSVAR_ULONGLONG(stats_modified_counter, srv_stats_modified_counter
 
 static MYSQL_SYSVAR_BOOL(stats_traditional, srv_stats_sample_traditional,
   PLUGIN_VAR_RQCMDARG,
-  "Enable traditional statistic calculation based on number of configured pages (default false)",
-  NULL, NULL, FALSE);
+  "Enable traditional statistic calculation based on number of configured pages (default true)",
+  NULL, NULL, TRUE);
 
 static MYSQL_SYSVAR_BOOL(adaptive_hash_index, btr_search_enabled,
   PLUGIN_VAR_OPCMDARG,

storage/innobase/srv/srv0srv.cc

@@ -345,8 +345,8 @@ UNIV_INTERN my_bool		srv_stats_auto_recalc = TRUE;
 UNIV_INTERN unsigned long long srv_stats_modified_counter = 0;
 
 /* Enable traditional statistic calculation based on number of configured
-pages default false. */
-UNIV_INTERN my_bool	srv_stats_sample_traditional = FALSE;
+pages default true. */
+UNIV_INTERN my_bool	srv_stats_sample_traditional = TRUE;
 
 UNIV_INTERN ibool	srv_use_doublewrite_buf	= TRUE;
 

storage/innobase/sync/sync0sync.cc

@@ -551,6 +551,11 @@ mutex_spin_wait(
 
 	mutex_set_waiters(mutex, 1);
 
+	/* Make sure waiters store won't pass over mutex_test_and_set */
+#ifdef __powerpc__
+	os_mb;
+#endif
+
 	/* Try to reserve still a few times */
 	for (i = 0; i < 4; i++) {
 		if (ib_mutex_test_and_set(mutex) == 0) {

storage/xtradb/handler/ha_innodb.cc

@@ -17462,8 +17462,8 @@ static MYSQL_SYSVAR_ULONGLONG(stats_modified_counter, srv_stats_modified_counter
 
 static MYSQL_SYSVAR_BOOL(stats_traditional, srv_stats_sample_traditional,
   PLUGIN_VAR_RQCMDARG,
-  "Enable traditional statistic calculation based on number of configured pages (default false)",
-  NULL, NULL, FALSE);
+  "Enable traditional statistic calculation based on number of configured pages (default true)",
+  NULL, NULL, TRUE);
 
 static MYSQL_SYSVAR_BOOL(adaptive_hash_index, btr_search_enabled,
   PLUGIN_VAR_OPCMDARG,

storage/xtradb/srv/srv0srv.cc

@@ -462,8 +462,8 @@ UNIV_INTERN my_bool		srv_stats_auto_recalc = TRUE;
 UNIV_INTERN unsigned long long srv_stats_modified_counter = 0;
 
 /* Enable traditional statistic calculation based on number of configured
-pages default false. */
-UNIV_INTERN my_bool	srv_stats_sample_traditional = FALSE;
+pages default true. */
+UNIV_INTERN my_bool	srv_stats_sample_traditional = TRUE;
 
 UNIV_INTERN ibool	srv_use_doublewrite_buf	= TRUE;
 UNIV_INTERN ibool       srv_use_atomic_writes = FALSE;

storage/xtradb/sync/sync0sync.cc

@@ -649,6 +649,11 @@ mutex_spin_wait(
 		mutex_set_waiters(mutex, 1);
 	}
 
+	/* Make sure waiters store won't pass over mutex_test_and_set */
+#ifdef __powerpc__
+	os_mb;
+#endif
+
 	/* Try to reserve still a few times */
 	for (i = 0; i < 4; i++) {
 		if (ib_mutex_test_and_set(mutex) == 0) {