I am running Postgres 8.1.9 on an 8 core Xeon 5430 box that is showing single digit CPU and IO utilization. the database size is 820G . Vacuum_cost_delay=0 and maintenance_mem = 900M Is there an option to vacuumdb or a way to make it run parallel threads. -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin