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| author | Sergey Vojtovich <svoj@mariadb.org> | 2015-04-15 11:29:01 +0400 |
|---|---|---|
| committer | Sergey Vojtovich <svoj@mariadb.org> | 2015-05-13 10:43:13 +0400 |
| commit | 55d5af733d97808a1479b185c029ac0121c0f158 (patch) | |
| tree | b8cf068171645ffda853e03e631d8d1602047053 /sql/lock.cc | |
| parent | c8ad5b2f1223d8bb6edcdcb56317172206c9fd8e (diff) | |
| download | mariadb-git-55d5af733d97808a1479b185c029ac0121c0f158.tar.gz | |
MDEV-7945 - THD::enter_stage() takes 0.48% in OLTP RO
THD::enter_stage() optimizations:
- stage backup code moved to THD::backup_stage(), saves one condition
- moved check for "new_stage" out to callers that actually need it
- remnants of enter_stage() moved to sql_class.h so it can be inlined
THD::enter_stage() overhead dropped 0.48% -> 0.07%.
PROFILING::status_change() optimizations:
- "status_arg" is now checked by QUERY_PROFILE::new_status()
- no need to check "enabled": !enabled && current is impossible
- remnants of status_change() moved to sql_profile.h so it can be inlined
PROFILING::status_change() overhead dropped 0.1% -> out of radar.
Diffstat (limited to 'sql/lock.cc')
| -rw-r--r-- | sql/lock.cc | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sql/lock.cc b/sql/lock.cc index c241e635e6b..a2f7df04de5 100644 --- a/sql/lock.cc +++ b/sql/lock.cc @@ -306,8 +306,8 @@ bool mysql_lock_tables(THD *thd, MYSQL_LOCK *sql_lock, uint flags) PSI_stage_info org_stage; DBUG_ENTER("mysql_lock_tables(sql_lock)"); - thd->enter_stage(&stage_system_lock, &org_stage, __func__, __FILE__, - __LINE__); + thd->backup_stage(&org_stage); + THD_STAGE_INFO(thd, stage_system_lock); if (sql_lock->table_count && lock_external(thd, sql_lock->table, sql_lock->table_count)) goto end; |