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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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3
sql/sql_class.h
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@ -149,9 +149,6 @@ public:
};
#define TC_LOG_PAGE_SIZE 8192
#define TC_LOG_MIN_SIZE (3*TC_LOG_PAGE_SIZE)
#define TC_HEURISTIC_RECOVER_COMMIT 1
#define TC_HEURISTIC_RECOVER_ROLLBACK 2
extern ulong tc_heuristic_recover;