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Re: [Xen-devel] [PATCH 08 of 10 v2] libxl: enable automatic placement of guests on NUMA nodes

On Thu, 2012-06-28 at 15:41 +0300, Pasi KÃrkkÃinen wrote:
> > > Furthermore, we need consider the guest NUMA(I am working on it now) and 
> > > live migration.
> > > 
> > Great. Can you share, either here on or a separate thread some more
> > details about what you mean by both "guest NUMA" and "live migration" in
> > this context?
> > 
> > As George said, that would be 4.3 material, but I'm still very
> > interested. :-)
> > 
> For the mailinglist archives.. 

> here are the Xen guest VM NUMA slides from XenSummit 2010:
> http://www.slideshare.net/xen_com_mgr/nakajima-numafinal
> http://www.slideshare.net/xen_com_mgr/dulloor-xensummit
Yes, I know this slides, and I've also looked at most of the code
they're referring to. That's all very interesting and it's well
worthwhile to keep that in mind for future steps in the field of NUMA
support. In particular, virtual topology awareness of the guest is
something really important to have, and I'll be happy to
discuss/work/contribute/help on it in the near future.

However, I'm still not sure I see how that ("guest NUMA") and live
migration should affect (either now or during 4.3 dev cycle) the initial
placement of a domain... That's what I was asking.

Thanks and Regards,

<<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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