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MDEV-232: Remove one fsync() from commit phase.

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Introduce a new storage engine API method commit_checkpoint_request().
This is used to replace the fsync() at the end of every storage engine
commit with a single fsync() when a binlog is rotated.

Binlog rotation is now done during group commit instead of being
delayed until unlog(), removing some server stall and avoiding an
expensive lock/unlock of LOCK_log inside unlog().
This commit is contained in:
unknown
2012-09-13 14:31:29 +02:00
parent 0697ee265f
commit 288eeb3a31
43 changed files with 1331 additions and 476 deletions
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12
mysql-test/r/mysqlbinlog2.result
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@ -697,7 +697,6 @@ SET @@session.lc_time_names=0/*!*/;
SET @@session.collation_database=DEFAULT/*!*/;
BEGIN
/*!*/;
SET INSERT_ID=6/*!*/;
DELIMITER ;
# End of log file
ROLLBACK /* added by mysqlbinlog */;
@ -1483,17 +1482,6 @@ COMMIT
/*!*/;
DELIMITER ;
DELIMITER /*!*/;
SET TIMESTAMP=1579609943/*!*/;
SET @@session.pseudo_thread_id=999999999/*!*/;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=0, @@session.unique_checks=1, @@session.autocommit=1/*!*/;
SET @@session.sql_mode=0/*!*/;
SET @@session.auto_increment_increment=1, @@session.auto_increment_offset=1/*!*/;
/*!\C latin1 *//*!*/;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8/*!*/;
SET @@session.lc_time_names=0/*!*/;
SET @@session.collation_database=DEFAULT/*!*/;
BEGIN
/*!*/;
DELIMITER ;
# End of log file
ROLLBACK /* added by mysqlbinlog */;