how many processors
Emilio Casbas
ecasbas at unav.es
Thu May 10 07:03:25 UTC 2007
Jim Canfield escribió:
> Ray Van Dolson wrote:
>
> "type 4" will count available slots regardless of the CPU existing. How
> about this one...
>
> # grep physical /proc/cpuinfo
>
> You should have unique ids for each physical CPU. I don't have a dual
> core at my disposal but it works for hyper threading.
>
> -Jim
>
>
> Interesting. If you actually look through the information from the
> type 4 second, I'm guessing it would be clear to the eye that there is
> or isn't a processor installed though, correct?
>
> Sounds like your way is the easiest though.
>
> Ray
>
>
>
> True. Curiosity got the best of me when I ran your "type 4" method and 2
> returned when I knew I only had one CPU installed...after looking at the
> output, you are right, it's clear the second processor is not installed.
>
> ...I'm surprised no one has mentioned the "open the case" option :)
>
> -Jim
Another possibility could be:
#more /proc/cpuinfo
and look the "physical id" feature.
By this way with two processors hyper threading, you'll see:
4 processors: two with "physical id"=0 plus two with "physical id"=3
So you could assume that there are 2 real processors.
Thanks
Emilio C.
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