diff options
| author | Robert Haas | 2012-07-02 13:36:34 +0000 |
|---|---|---|
| committer | Robert Haas | 2012-07-02 13:41:01 +0000 |
| commit | f83b59997d29f06c3d67e7eb9a1f2c9cd017d665 (patch) | |
| tree | 78a6cf4d43ca1c677cfeec05e187e17d17d8e884 /src/backend/access/transam/twophase.c | |
| parent | 9ad45c18b6c8d03ce18a26223eb0d15e900c7a2c (diff) | |
Make walsender more responsive.
Per testing by Andres Freund, this improves replication performance
and reduces replication latency and latency jitter. I was a bit
concerned about moving more work into XLogInsert, but testing seems
to show that it's not a problem in practice.
Along the way, improve comments for WaitLatchOrSocket.
Andres Freund. Review and stylistic cleanup by me.
Diffstat (limited to 'src/backend/access/transam/twophase.c')
| -rw-r--r-- | src/backend/access/transam/twophase.c | 21 |
1 files changed, 0 insertions, 21 deletions
diff --git a/src/backend/access/transam/twophase.c b/src/backend/access/transam/twophase.c index e8fb78b3311..7f198c2e3e0 100644 --- a/src/backend/access/transam/twophase.c +++ b/src/backend/access/transam/twophase.c @@ -1042,13 +1042,6 @@ EndPrepare(GlobalTransaction gxact) /* If we crash now, we have prepared: WAL replay will fix things */ - /* - * Wake up all walsenders to send WAL up to the PREPARE record immediately - * if replication is enabled - */ - if (max_wal_senders > 0) - WalSndWakeup(); - /* write correct CRC and close file */ if ((write(fd, &statefile_crc, sizeof(pg_crc32))) != sizeof(pg_crc32)) { @@ -2045,13 +2038,6 @@ RecordTransactionCommitPrepared(TransactionId xid, /* Flush XLOG to disk */ XLogFlush(recptr); - /* - * Wake up all walsenders to send WAL up to the COMMIT PREPARED record - * immediately if replication is enabled - */ - if (max_wal_senders > 0) - WalSndWakeup(); - /* Mark the transaction committed in pg_clog */ TransactionIdCommitTree(xid, nchildren, children); @@ -2133,13 +2119,6 @@ RecordTransactionAbortPrepared(TransactionId xid, XLogFlush(recptr); /* - * Wake up all walsenders to send WAL up to the ABORT PREPARED record - * immediately if replication is enabled - */ - if (max_wal_senders > 0) - WalSndWakeup(); - - /* * Mark the transaction aborted in clog. This is not absolutely necessary * but we may as well do it while we are here. */ |