How many CPUs do I have?

Paul Howarth paul at city-fan.org
Thu Feb 3 11:22:12 UTC 2005


Leon Stringer wrote:
> Hi,
> 
> I've got a system with FC3 on that I can't easily get inside of.
> 
> Yesterday the kernel crashed (apparently when I reconnected a network
> cable).
> 
> So I updated the kernel RPM from 2.6.9 to 2.6.10. I chose the SMP
> version but now wonder if that's correct. On Windows some new Pentiums -
> those with hyper-threading I believe - show as two processors in Task
> Manager. /proc/cpuinfo shows two processors but top only shows 1.

In top, press '1' to see multiple CPUs.

> 1. How many CPUs do I have? (See line from top and /proc/cpuinfo below).

2

> 2. Is there a problem running the SMP kernel package (e.g kernel-
> smp-2.6.10-1.741_FC3.i686.rpm) on a single CPU system?

It might be a bit slower.

> 3. Would hyper-threading benefit from the SMP package?

Yes.

Paul.




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