Number of processors shown on PE2850

Kevin Kwast kevintx at gmail.com
Wed May 17 11:39:37 CDT 2006


On a 2.6 kernel, cat /proc/cpuinfo, and if your two CPUs say "siblings : 2"
then you're seeing the two virtual CPUs created by the hyperthreading of one
physical CPU.  If they don't, you're looking at two physical CPUs with
HyperThreading disabled in the BIOS.

On 5/17/06, Brice Figureau <brice+dell at daysofwonder.com> wrote:
>
> Hi,
>
> On Wed, 2006-05-17 at 12:45 +0100, Jim Potter wrote:
> > - the other runs debian sarge 3.1 and only shows 2 processors - I would
> > expect to see 4 here, but get no error messages in dmesg
>
> Make sure you have hyperthreading enabled in bios and compiled in your
> kernel.
> Make sure you're running a 2.6 kernel.
> Sarge is shipped with a 2.4 and a 2.6 kernel, you might be running a 2.4
> one.
>
> Regards,
> --
> Brice Figureau <brice+dell at daysofwonder.com>
>
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