[xenpreview-dev] vcpu-set does not reduce dom0 vcpus

Jason Douglas jdouglas at novell.com
Tue Nov 14 16:44:58 MST 2006


Normally the vcpu-set command works for dom0.  I use it on a regular basis (and it is tested in xm-test), but I don't have any machines with 32 processors, so I've never tried your exact scenario.  I would say that it is a bug.  Good luck!

Jason

>>> On Tue, Nov 14, 2006 at  9:22 AM, in message
<EF8D308BE33AF54D8934DF26520252D30350457F at USTR-EXCH5.na.uis.unisys.com>,
"Krysan, Susan" <KRYSANS at unisys.com> wrote: 
> Using SLES10 Xen, I attempted to reduce the number of dom0 processors to
> 16 using xm vcpu- set 0 16, but nothing happens.  Xm top and
> /proc/cpuinfo show dom0 still using 32 processors.  I also tried setting
> the number of vcpus to other values, but dom0 never drops from 32
> processors.  The dom0- cpus parameter in /etc/xen/xend- config.sxp is set
> to 0.  Is the vcpu- set command only for domu and not dom0? Is this
> expected behavior or a bug?  
> 
>  
> 
> Thanks,
> 
> Sue Krysan
> 
> Linux Systems Group
> 
> Unisys Corporation
> 
>  
> 
>  



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