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