I turned off hyperthreading (I saw that on the list that it did not help on Linux).
I am using a pretty lightweight windows box Optiplex with IDE 750-meg internal 2.4 mghz cpu. My desktop has 2 gig, so might not be bad idea to try it local (I have installed), but me thinks its not totally a hardware issue for us. Joel Fradkin Do you run your 2650s with hyperthreading on? I found that slowed mine down under load, but we never had more than a couple dozen users hitting the db at once, so we may well have had a different load profile than what you're seeing. ---------------------------(end of broadcast)--------------------------- TIP 4: Don't 'kill -9' the postmaster ---------------------------(end of broadcast)--------------------------- TIP 6: Have you searched our list archives? http://archives.postgresql.org