Tory, Do you know if your workload involves a lot of lock-blocking, particularly blocking on locks related to FKs? I'm tracing down a problem which sounds similar to yours. -- Josh Berkus PostgreSQL Experts Inc. http://pgexperts.com -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance