Re: [Xen-devel] [PATCH] xen, tools/python/xen: pincpu support, vcpus, add vcpu to cpu map

[Andrew Theurer <habanero@xxxxxxxxxx>]

On Thursday 14 April 2005 14:00, Ian Pratt wrote:
> > If the enumeration is done in a standardised way then it's
> > possible to work out in userspace what CPU id is where but
> > it's not at all obvious to the user right now.  Would
> > definitely be good for the management tools to give more
> > information to the user on this stuff.
>
> Yep. 'xm info' should give the total number of logical CPUs, then
> show the hierarchy: nodes, sockets, cores, hyperthreads (in that
> order, which is how they should be enumerated to get the scalar CPU
> number).

Any thoughts how this would work with hotplug cpu support (in xen)?  Do 
we currently leave gaps in the cpu numbering for missing cpus?

For example, we have a 4 socket HT system with 2 chips installed, 
available cpu id's may look like 0,1,3,4.

-Andrew




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