Rafael Martinez wrote:
> Does the use of pg_stat_reset() affects the statistics autovacuum uses
> to find out what to do and when this should be done?
Yes. You should do a manual ANALYZE after resetting stats to keep
autovacuum in sync with reality. (In principle ANALYZE is only
concerned with updating the unrelated stats in pg_statistic, but it also
sends dead/live tuple counts to pgstats which autovacuum relies on.)
> Can the use of pg_stat_reset() affect performance in any way?
Hmm, not sure.
--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
