On Tue, Jul 10, 2007 at 08:09:11PM +0200, Adrian von Bidder wrote: > If your operating system is able to schedule the threads/processes across > CPUs, PostgreSQL will use them. But notice that hyperthreading imposes its own overhead. I've not seen evidence that enabling hyperthreading actually helps, although I may have overlooked a couple of cases. A -- Andrew Sullivan | ajs@xxxxxxxxxxxxxxx I remember when computers were frustrating because they *did* exactly what you told them to. That actually seems sort of quaint now. --J.D. Baldwin