Re: how to configure hyperthreading

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On Wed, Feb 18, 2004 at 10:24:13AM -0800, a s p a s i a wrote:
> > There is no kernel parameter for this in 2.4.  As long as you're running
> > an smp kernel, and the BIOS presents all the 4 CPUs (2 physical with 2
> > logical CPUs each), the Linux will see and use all 4.
> 
> how can i check this?
> 
> cat /proc/cpuinfo
> 
> or does the above report the physicals ?

It reports what the BIOS tells the Linux kernel.  You need to boot into
the BIOS setup screens and check the configuration there *before* Linux
boots.  top will tell you how many CPUs your system sees. At the top
you'll see 1 line per CPU.  I can't remember off the top of my head if
/proc/cpuinfo shows you as well.  I would assume it does.

-- 
Ed Wilts, Mounds View, MN, USA
mailto:ewilts@xxxxxxxxxx
Member #1, Red Hat Community Ambassador Program


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