Re: Detecting number of Physical CPUs in Intel Hyperthreaded CPUsystems

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Works for 2.4; I have not tested with a 2.2 kernel.

René

Ken Sheppard wrote:
> Thanks for the quick reply.  Will this solution work for 2.2 or 2.4
> kernels?
> 
> Thanks,
> 
> Ken
> 
> 
>>-----Original Message-----
>>From: redhat-devel-list-admin@redhat.com [mailto:redhat-devel-list-
>>admin@redhat.com] On Behalf Of René Møller Fonseca
>>Sent: Saturday, May 18, 2002 7:22 PM
>>To: redhat-devel-list@redhat.com
>>Subject: Re: Detecting number of Physical CPUs in Intel Hyperthreaded
> 
> CPU
> 
>>systems
>>
>>You can do something like this from the shell:
>>
>>processors=`egrep -c ^cpu[0-9]+ /proc/stat || :`
>>
>>René
>>
>>Ken Sheppard wrote:
>>
>>>Does anyone know how I can determine the number of physical
>>
> processors
> 
>>>on a machine with Intel Hyperthreaded CPUs? I have code from Intel
>>
> which
> 
>>>will report the number of physical CPUs on a windows system. It uses
>>
> the
> 
>>>Win32 process affinity stuff to issue commands on specific CPUs so
>>
> it
> 
>>>isn't portable to Linux. I was hoping I could simply read
>>
> /proc/cpuinfo.
> 
>>>The /proc/cpuinfo I looked at on a 2.4.? machine didn't appear to
>>
> have
> 
>>>enough information.
>>>
>>>Thanks,
>>>
>>>Ken
>>>
>>>
>>>
>>>_______________________________________________
>>>Redhat-devel-list mailing list
>>>Redhat-devel-list@redhat.com
>>>https://listman.redhat.com/mailman/listinfo/redhat-devel-list
>>>
>>
>>
>>
>>--
>>B.Sc. in Computer Systems Engineering
>>The Maersk Mc-Kinney Moller Institute for Production Technology
>>University of Southern Denmark
>>http://www.mip.sdu.dk/~fonseca
>>
>>
>>
>>_______________________________________________
>>Redhat-devel-list mailing list
>>Redhat-devel-list@redhat.com
>>https://listman.redhat.com/mailman/listinfo/redhat-devel-list
> 
> 
> 
> 
> _______________________________________________
> Redhat-devel-list mailing list
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> 



-- 
B.Sc. in Computer Systems Engineering
The Maersk Mc-Kinney Moller Institute for Production Technology
University of Southern Denmark
http://www.mip.sdu.dk/~fonseca



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