Figuring out how many real cpus, cpu cores, and logical cpus

Aragon Gouveia aragon at phat.za.net
Fri Sep 26 21:42:33 UTC 2008


| By John Baldwin <jhb at freebsd.org>
|                                          [ 2008-09-26 16:05 +0200 ]
> On Friday 26 September 2008 07:56:45 am Aragon Gouveia wrote:
> > Hi,
> > 
> > I'm struggling to figure out if my BSD system is detecting the correct
> > properties about my CPU.
> > 
> > What I've figured out so far is that FreeBSD is seeing 1 physical CPU, with
> > 1 core, and 2 logical CPUs.  However, I am fairly certain this CPU should
> > have multiple cores (atleast two).
> 
> Are you sure this isn't a Xeon processor with 2 hyperthreads?  amr(4) is a 
> PERC4 RAID controller, and the dual-core Dell boxes I know of all have 
> PERC5/6 (mfi) RAID controllers.

I installed dmidecode from ports which was very useful.  It showed only 1
core per chip and got me the Dell service tag for the machine, which I
looked up online to check further.  Your suspicions confirm everything too,
and seems I was wrong - only 1 core per chip. :)

Thanks for responding!


Regards,
Aragon


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