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Re: [Xen-devel] [PATCH 00 of 10 v3] Automatic NUMA placement for xl

On Sun, 2012-07-08 at 12:32 -0600, Ian Campbell wrote: 
> On Wed, 2012-07-04 at 12:17 -0400, Dario Faggioli wrote:
> > Hello,
> > 
> > Third version of the NUMA placement series Xen 4.2.
> Starting an HVM guest (although I don't suppose it is HVM specific) on a
> none NUMA system I get this:
>         libxl: debug: libxl_numa.c:270:libxl__get_numa_candidates: only 1 
> node. no placement required
>         libxl: detail: libxl_dom.c:175:numa_place_domain: 0 NUMA placement 
> candidates found
>         libxl: notice: libxl_dom.c:180:numa_place_domain: NUMA placement 
> failed, performance might be affected
Mmm... I see. No, it's not HVM specific and you're right, it does not
make much sense.

> this being a non-NUMA system I suppose it is not the end of the world.
> It'd be nice to avoid the warning though -- perhaps
> libxl__get_numa_candidates should either not special case single node
> systems or it should manually return the trivial candidate set?
Yep, I can definitely do that, along with the other fix you suggested
and the wording of the doc patch and resend the last three.

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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