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