Fujii Masao d1763ea8c9 Change default of pg_stat_statements.track_planning to off. ... Since v13 pg_stat_statements is allowed to track the planning time of statements when track_planning option is enabled. Its default was on. But this feature could cause more terrible spinlock contentions in pg_stat_statements. As a result of this, Robins Tharakan reported that v13 beta1 showed ~45% performance drop at high DB connection counts (when compared with v12.3) during fully-cached SELECT-only test using pgbench. To avoid this performance regression by the default setting, this commit changes default of pg_stat_statements.track_planning to off. Back-patch to v13 where pg_stat_statements.track_planning was introduced. Reported-by: Robins Tharakan Author: Fujii Masao Reviewed-by: Julien Rouhaud Discussion: https://postgr.es/m/2895b53b033c47ccb22972b589050dd9@EX13D05UWC001.ant.amazon.com		2020-07-03 11:35:22 +09:00
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src	Change default of pg_stat_statements.track_planning to off.	2020-07-03 11:35:22 +09:00
KNOWN_BUGS
Makefile	Remove maintainer-check target, fold into normal build	2013-10-10 20:11:56 -04:00
MISSING_FEATURES
TODO	Change documentation references to PG website to use https: not http:	2017-05-20 21:50:47 -04:00