Re: [Xen-devel] NUMA TODO-list for xen-devel

[Dario Faggioli <raistlin@xxxxxxxx>]

On Wed, 2012-08-01 at 17:30 +0100, Andrew Cooper wrote:
> On 01/08/12 17:16, Dario Faggioli wrote:
>
> ...
>
> > - Automatic placement at guest creation time. Basics are there and
> > will be shipping with 4.2. However, a lot of other things are
> > missing and/or can be improved, for instance:
> > [D] * automated verification and testing of the placement;
> > * benchmarks and improvements of the placement heuristic;
> > [D] * choosing/building up some measure of node load (more accurate
> > than just counting vcpus) onto which to rely during placement;
> > * consider IONUMA during placement;
> > * automatic placement of Dom0, if possible (my current series is
> > only affecting DomU)
> > * having internal xen data structure honour the placement (e.g., 
> > I've been told that right now vcpu stacks are always allocated
> > on node 0... Andrew?).
> >
> 
> - Xen NUMA internals.  Placing items such as the per-cpu stacks and
> data area on the local NUMA node, rather than unconditionally on node
> 0 at the moment.  As part of this, there will be changes to
> alloc_{dom,xen}heap_page() to allow specification of which node(s) to
> allocate memory from.

As you see, I already tried to consider that (as you told me it does
that couple of weeks ago :-) ). I'll add your wording of it (much better
than mine) to the wiki... I understand you're working on this, aren't
you? Can I put that down to?

Thanks and Regards,
Dario

-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://retis.sssup.it/people/faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)

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