Re: How to get number of physical CPU in linux from user space?

From: Martin J. Bligh (mbligh@aracnet.com)
Date: Fri Oct 25 2002 - 13:52:39 EST


>> ones are paired up, I believe that if all but the last bit
>> of the apicid is the same, they're siblings. You might have to
>> dig the apicid out of the bootlog if the cpuinfo stuff doesn't
>> tell you.
>
> And you are right. Those apicid, after mask out the siblings,
> are put in phys_cpu_id[] array in kernel.

Probably best to just hack /proc/cpuinfo output to include the apicid.

M.

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