Well, not exactly. Values for autovacuum and autoanalyse are Null because I did not configured them for system tables yet, but I´m doing vacuum manually once a week. My question now is why those selects varies that way. Almost all times it spend 20ms but 2 o 3% of the times it spend 500ms, why ? System tables are not cached ? What is Postgres doing on that time to get that response times ? Can I help Postgres on any way ? -- Sent from: https://www.postgresql-archive.org/PostgreSQL-general-f1843780.html