On Mon, Jun 14, 2010 at 2:53 PM, Tom Wilcox <hungrytom@xxxxxxxxx> wrote: > maintenance_work_mem=4GB > work_mem=4GB > shared_buffers=4GB > effective_cache_size=4GB > wal_buffers=1GB It's pretty easy to drive your system into swap with such a large value for work_mem - you'd better monitor that carefully. The default value for wal_buffers is 64kB. I can't imagine why you'd need to increase that by four orders of magnitude. I'm not sure whether it will cause you a problem or not, but you're allocating quite a lot of shared memory that way that you might not really need. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise Postgres Company -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance