Disable a CPU?

Disable a CPU?

[Rob Gardner]

Is there an easy way in xen to disable a cpu in an smp box? That is, if 
I have a 2-cpu machine, I want xen to ignore one of them and just ran as 
if it's a 1-cpu machine. I could physically remove a cpu, but a software 
method would be much more convenient.

Thanks,
Rob Gardner
HP



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Re: Disable a CPU?

[M.A. Williamson]

Try the "nosmp" parameter on Xen's boot command line.

HTH,
Mark

On Oct 13 2004, Rob Gardner wrote:

> Is there an easy way in xen to disable a cpu in an smp box? That is, if 
> I have a 2-cpu machine, I want xen to ignore one of them and just ran as 
> if it's a 1-cpu machine. I could physically remove a cpu, but a software 
> method would be much more convenient.
> 
> Thanks,
> Rob Gardner
> HP
> 
> 
> 
> ------------------------------------------------------- This SF.net 
> email is sponsored by: IT Product Guide on ITManagersJournal Use IT 
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Re: Disable a CPU?

[Adam Heath]

On Wed, 13 Oct 2004, M.A. Williamson wrote:

> Try the "nosmp" parameter on Xen's boot command line.

Not the same thing.

If one has 8 cpus, and only wants to disable half of them(or 1, or 5, or
whatever).


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Re: Disable a CPU?

[Rob Gardner]

Adam Heath wrote:

> On Wed, 13 Oct 2004, M.A. Williamson wrote:
> 
> 
>>Try the "nosmp" parameter on Xen's boot command line.
> 
> 
> Not the same thing.
> 
> If one has 8 cpus, and only wants to disable half of them(or 1, or 5, or
> whatever).


True, but I've just got 2 cpu's, so the nosmp thing should work for me.

Thanks.

Rob



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RE: Disable a CPU?

[Ian Pratt]

> Is there an easy way in xen to disable a cpu in an smp box? That is,
if I have a 2-cpu > machine, I want xen to ignore one of them and just
ran as if it's a 1-cpu machine. I > > could physically remove a cpu, but
a software method would be much more convenient.

put 'nosmp' on the xen command line. 

Ian


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