Re: [Xen-devel] MPI benchmark performance gap between native linux anddomU

[Mark Williamson <mark.williamson@xxxxxxxxxxxx>]

On Tuesday 05 April 2005 23:29, xuehai zhang wrote:
> > I did not specify "cpu" option in Xen's configuration file, so I think
> > both dom0 and domU run on the  same CPU (1st CPU). I will try to assign
> > them to different CPUs later.
>
> I think I said something wrong here. If I do not specify "cpu" option in
> Xen config file, I observe Xen usually assigns the 2nd CPU to domU while
> running dom0 on the 1st CPU.

Last time I looked, the default was to assign in a round robin fashion.  i.e. 
the next domain you create will be on the 1st CPU (with dom0) unless you 
explicitly specify otherwise - watch out this doesn't confuse your testing.

Cheers,
Mark

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