I have a system with around 330 databases running PostgreSQL 8.4.2 What would the expected behavior be with AutoVacuum_NapTime set to the default of 1m and autovacuum_workers set to 3? What I'm observing is that the system is continuously vacuuming databases. Would these settings mean the autovacuum worker would try to vacuum all 330 databases once per minute? George Sexton -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance