| From: | "J(dot) Andrew Rogers" <jrogers(at)neopolitan(dot)com> |
|---|---|
| To: | Nis Jorgensen <nis(at)superlativ(dot)dk> |
| Cc: | "Pgsql-Performance ((E-mail))" <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: 64-bit vs 32-bit performance ... backwards? |
| Date: | 2006-06-13 13:46:10 |
| Message-ID: | 02FC7834-1B97-4612-9029-03B5E0127613@neopolitan.com |
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| Lists: | pgsql-performance |
On Jun 13, 2006, at 1:40 AM, Nis Jorgensen wrote:
> Since you sound like you have done extensive testing:
>
> Do you have any data regarding whether to enable hyperthreading or
> not?
> I realize that this may be highly dependant on the OS, application and
> number of CPUs, but I would be interested in hearing your
> recommendations (or others').
Hyperthreading never made much of a difference for our database
loads. Since we've retired all non-dev P4 database servers, I am not
too worried about it. We will probably re-test the new "Core 2" CPUs
that are coming out, since those differ significantly from the P4 in
capability.
J. Andrew Rogers
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