How many processors are active in box ?

Zoran Salahovic Lendra zsalahovic at bankinter.es
Thu Dec 17 10:54:37 UTC 2009


try: 
        dmesg |grep "Core ID"

Regards,
Z.





Dusan Djordjevic <dj.dule.liste at gmail.com> 
 
Enviado por: redhat-list-bounces at redhat.com
17/12/2009 11:07
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Re: How many processors are active in box ?






On Thu, Dec 17, 2009 at 10:58 AM, Zoran Salahovic Lendra
<zsalahovic at bankinter.es> wrote:
>
> DualCore maybe?
>
> you can see the number of your physical processors with something like
> this:
>
> [root at box ~]# cat /proc/cpuinfo |grep "physical id"|sort -u
> physical id     : 0
> physical id     : 1

That is exactly what confuses me. There is no "physical id" in
/proc/cpuinfo, so I cannot determine it from there.

As far as I understood from the web, Opteron 850 should be single core
processor.

Is there any other way different from /proc/cpuinfo to determine
number of processors.

Best regards,
Dusa




>
> Pozdrav
> Zoran
>
>
>
>
> Dusan Djordjevic <dj.dule.liste at gmail.com>
>
> Enviado por: redhat-list-bounces at redhat.com
> 17/12/2009 10:48
> Por favor, responda a
> General Red Hat Linux discussion list <redhat-list at redhat.com>
>
>
> Para
> redhat-list at redhat.com
> cc
>
> Asunto
> How many processors are active in box ?
>
>
>
>
>
>
> Hi all,
>
> I should perform upgrades to a box that I did not install so I am out of
> documents. What confuses me is following:
>
> -According to /etc/issue, it is running RHEL 5.2 (Red Hat Enterprise 
Linux
> Server release 5.2 (Tikanga)). As far as I know. ES supports up to 2
> processors
> -It seems server do have 4 x Opteron 850 physical processors
> -cat /proc/cpuinfo shows that box do have 4 processors
>
> I am confused here. If only 2 processors are supported by ES, how comes 
I
> can see all of them ? Are they active all, or just I can see them but
> kernel
> uses only 2 ?
>
> Why someone installed ES on 4 processors box is another question, not 
for
> here :)
>
> Thank you in advance.
>
> Best regards,
> Dusan
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