On Wednesday 01 Sep 2004 6:29 pm, John McBride wrote:
> Matthias Bauw wrote:
> >hi,
> >
> >I was in fact wondering how to get the most out of my P4 3.0Ghz with
> >Hyper Threading.
>
> Watch out that the intel marketing monster doesn't kick you in the
> shorts. You still have only one CPU. Turning virtual CPUs on in our
> dual P4 boxes ("four" CPUs) severely degraded the box performance.
> In many cases all turning on virtual CPUs does is make linux, under
> certain loads, to think "hey, I can shuffle things off to another
> CPU"--false in this case (it's the same CPU) and there is overhead
> to swapping processes between CPUs, thus yielding "less than 0"
> performance increase.
Does this mean that with my FC1 install, with a P4 and using the
defaulted SMP kernel is not the best option?
Would I be better running the non-SMP kernel that was also installed as
an option?
>
> ---
> John
--
Gary Stainburn
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