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Reorder log_autovacuum_min_duration log output.

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This order seems more natural.  It starts with details that are
particular to heap and index data structures, and ends with system-level
costs incurred during the autovacuum worker's VACUUM/ANALYZE operation.

Author: Peter Geoghegan <pg@bowt.ie>
Discussion: https://postgr.es/m/CAH2-WzkzxK6ahA9xxsOftRtBX_R0swuHZsvo4QUbak1Bz7hb7Q@mail.gmail.com
Backpatch: 14-, which enhanced the log output in various ways.
This commit is contained in:
Peter Geoghegan
2021-08-27 13:08:41 -07:00
parent de5dcb0796
commit fdfbfa24fa
2 changed files with 22 additions and 23 deletions
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12
src/backend/commands/analyze.c
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@ -777,12 +777,6 @@ do_analyze_rel(Relation onerel, VacuumParams *params,
get_database_name(MyDatabaseId),
get_namespace_name(RelationGetNamespace(onerel)),
RelationGetRelationName(onerel));
appendStringInfo(&buf, _("buffer usage: %lld hits, %lld misses, %lld dirtied\n"),
(long long) AnalyzePageHit,
(long long) AnalyzePageMiss,
(long long) AnalyzePageDirty);
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:"));
@ -796,6 +790,12 @@ do_analyze_rel(Relation onerel, VacuumParams *params,
(double) (pgStatBlockWriteTime - startwritetime) / 1000);
appendStringInfoChar(&buf, '\n');
}
appendStringInfo(&buf, _("avg read rate: %.3f MB/s, avg write rate: %.3f MB/s\n"),
read_rate, write_rate);
appendStringInfo(&buf, _("buffer usage: %lld hits, %lld misses, %lld dirtied\n"),
(long long) AnalyzePageHit,
(long long) AnalyzePageMiss,
(long long) AnalyzePageDirty);
appendStringInfo(&buf, _("system usage: %s"), pg_rusage_show(&ru0));
ereport(LOG,