how many processors

[Dana Holland]

This proved to be the most consistent means for me.  The other commands 
that were suggested worked on some of my boxes, but not others.  This 
one seems to work on all of them.

Emilio Casbas wrote:
> 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.
>