Niels Kristian Schjødt wrote: > PS. I'm on postgres 9.2 on a server with 32gb ram, 8 cores and > two 3T disks in a software raid 1 setup. In addtion to the excellent advice from Shaun, I would like to point out a few other things. One query runs on one core. In a test of a single query, the other seven cores aren't doing anything. Be sure to pay attention to how a representative workload is handled. Unless you have tuned your postgresql.conf settings, you probably aren't taking very good advantage of that RAM. For heavy load you need lots of spindles and a good RAID controller with battery-backed cache configured for write-back. You will probably benefit from reading this page: http://wiki.postgresql.org/wiki/SlowQueryQuestions If you don't already have it, you will probably find Greg Smith's book on PostgreSQL performance a great investment: http://www.postgresql.org/docs/books/ -Kevin -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance