"Benjamin Krajmalnik" <kraj@xxxxxxxxxxxxx> writes: > The only thing which I see when I run iostat is load on the drives every > so often. Mifd0 is the database, mifd1 is the pg_xlog. Hmm. Maybe checkpoints or something else saturating your drives for a little while? You might want to be more aggressive about smoothing out checkpoints, cf http://www.westnet.com/~gsmith/content/postgresql/chkp-bgw-83.htm At the very least I'd enable checkpoint logging for awhile and see if there seems to be any correlation to the response-time glitches. regards, tom lane -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin