Yeah, it's pretty much a known issue for postgres
Dave
On 20-Nov-05, at 4:46 PM, Craig A. James wrote:
> This article on ZDNet claims that hyperthreading can *hurt*
> performance, due to contention in the L1/L2 cache by a second process:
>
> http://news.zdnet.co.uk/0,39020330,39237341,00.htm
>
> Has anyone tested this on Postgres yet? (And based on a recent
> somewhat caustic thread about performance on this forum, I'm going
> to avoid speculation, and let those who actually *know* answer! ;-)
>
> Craig
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