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d1763ea8c9
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 |
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| .. | ||
| expected | ||
| sql | ||
| .gitignore | ||
| Makefile | ||
| pg_stat_statements--1.0--1.1.sql | ||
| pg_stat_statements--1.1--1.2.sql | ||
| pg_stat_statements--1.2--1.3.sql | ||
| pg_stat_statements--1.3--1.4.sql | ||
| pg_stat_statements--1.4--1.5.sql | ||
| pg_stat_statements--1.4.sql | ||
| pg_stat_statements--1.5--1.6.sql | ||
| pg_stat_statements--1.6--1.7.sql | ||
| pg_stat_statements--1.7--1.8.sql | ||
| pg_stat_statements.c | ||
| pg_stat_statements.conf | ||
| pg_stat_statements.control | ||