On 10/9/12 1:12 PM, Craig James wrote: > I've confirmed that hyperthreading causes a huge drop in performance on a > 2x4-core Intel Xeon E5620 2.40GHz system. The bottom line is: > > ~3200 TPS max with hyperthreading > ~9000 TPS max without hyprethreading Oh, interesting! This is the first time I've seen results like this on a later Linux kernel and processor. I thought Intel had licked the "hyperthreading penalty". -- Josh Berkus PostgreSQL Experts Inc. http://pgexperts.com -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
