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Improve logging of auto-vacuum and auto-analyze

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When logging auto-vacuum and auto-analyze activity, include the I/O
timing if track_io_timing is enabled.  Also, for auto-analyze, add the
read rate and the dirty rate, similar to how that information has
historically been logged for auto-vacuum.

Stephen Frost and Jakub Wartak

Reviewed-By: Heikki Linnakangas, Tomas Vondra
Discussion: https://www.postgresql.org/message-id/VI1PR0701MB69603A433348EDCF783C6ECBF6EF0%40VI1PR0701MB6960.eurprd07.prod.outlook.com
This commit is contained in:
Stephen Frost
2021-03-16 14:46:48 -04:00
parent 1ea396362b
commit 94d13d474d
3 changed files with 116 additions and 10 deletions
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18
src/backend/access/heap/vacuumlazy.c
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@ -441,6 +441,8 @@ heap_vacuum_rel(Relation onerel, VacuumParams *params,
TransactionId new_frozen_xid;
MultiXactId new_min_multi;
ErrorContextCallback errcallback;
PgStat_Counter startreadtime = 0;
PgStat_Counter startwritetime = 0;
Assert(params != NULL);
Assert(params->index_cleanup != VACOPT_TERNARY_DEFAULT);
@ -455,6 +457,11 @@ heap_vacuum_rel(Relation onerel, VacuumParams *params,
{
pg_rusage_init(&ru0);
starttime = GetCurrentTimestamp();
if (track_io_timing)
{
startreadtime = pgStatBlockReadTime;
startwritetime = pgStatBlockWriteTime;
}
}
if (params->options & VACOPT_VERBOSE)
@ -675,6 +682,17 @@ heap_vacuum_rel(Relation onerel, VacuumParams *params,
(long long) VacuumPageDirty);
appendStringInfo(&buf, _("avg read rate: %.3f MB/s, avg write rate: %.3f MB/s\n"),
read_rate, write_rate);
if (track_io_timing)
{
appendStringInfoString(&buf, _("I/O Timings:"));
if (pgStatBlockReadTime - startreadtime > 0)
appendStringInfo(&buf, _(" read=%.3f"),
(double) (pgStatBlockReadTime - startreadtime) / 1000);
if (pgStatBlockWriteTime - startwritetime > 0)
appendStringInfo(&buf, _(" write=%.3f"),
(double) (pgStatBlockWriteTime - startwritetime) / 1000);
appendStringInfoChar(&buf, '\n');
}
appendStringInfo(&buf, _("system usage: %s\n"), pg_rusage_show(&ru0));
appendStringInfo(&buf,
_("WAL usage: %ld records, %ld full page images, %llu bytes"),