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Add checkpoint_warning to warn of excessive checkpoints caused by too

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few WAL files.
This commit is contained in:
Bruce Momjian
2002-11-15 02:44:57 +00:00
parent 3779f7fd9f
commit 2986aa6a66
6 changed files with 52 additions and 5 deletions
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20
src/backend/postmaster/postmaster.c
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@@ -37,7 +37,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/postmaster/postmaster.c,v 1.296 2002/11/15 01:57:26 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/postmaster/postmaster.c,v 1.297 2002/11/15 02:44:55 momjian Exp $
*
* NOTES
*
@@ -198,6 +198,8 @@ bool SilentMode = false; /* silent mode (-S) */
int PreAuthDelay = 0;
int AuthenticationTimeout = 60;
int CheckPointTimeout = 300;
int CheckPointWarning = 30;
time_t LastSignalledCheckpoint = 0;
bool log_hostname; /* for ps display */
bool LogSourcePort;
@@ -2329,6 +2331,22 @@ sigusr1_handler(SIGNAL_ARGS)
if (CheckPostmasterSignal(PMSIGNAL_DO_CHECKPOINT))
{
if (CheckPointWarning != 0)
{
/*
* This only times checkpoints forced by running out of
* segment files. Other checkpoints could reduce
* the frequency of forced checkpoints.
*/
time_t now = time(NULL);
if (now - LastSignalledCheckpoint < CheckPointWarning)
elog(LOG, "Checkpoint segments are being created too frequently (%d secs)\n
Consider increasing CHECKPOINT_SEGMENTS",
now - LastSignalledCheckpoint);
LastSignalledCheckpoint = now;
}
/*
* Request to schedule a checkpoint
*