From: Dario Faggioli <dario.faggioli@citrix.com>
To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: xen-devel <xen-devel@lists.xen.org>
Subject: Re: Spurious "NUMA placement failed, performance might be affected" message on ARM
Date: Mon, 28 Apr 2014 14:23:36 +0200 [thread overview]
Message-ID: <1398687816.6102.109.camel@Solace> (raw)
In-Reply-To: <1398684642.29700.71.camel@kazak.uk.xensource.com>
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On lun, 2014-04-28 at 12:30 +0100, Ian Campbell wrote:
> On Mon, 2014-04-28 at 11:01 +0100, Ian Campbell wrote:
> [...]
> > total_memory : 8184
> > free_memory : 6933
> [...]
> > node: memsize memfree distances
> > 0: 4088 3861 20
>
> I think we are missing some RAM here...
>
> and I have now noticed that I only see this for guests which have more
> RAM than this memfree value (+/- some slop). The guests succeed because
> there is actually RAM available.
>
Oh, yes, that's the first 'if' being true then.
Anyway, I'll go ahead and make a patch for skipping all this in case
there is only 1 node.
> I think this is enough for me to now track down the cause on the
> hypervisor side.
>
Indeed. From what you say, it looks like XEN_SYSCTL_numainfo is 'hiding'
something on ARM...
> Thanks for your input.
>
:-)
Regards,
Dario
--
<<This happens because I choose it to happen!>> (Raistlin Majere)
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Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)
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prev parent reply other threads:[~2014-04-28 12:23 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-25 10:37 Spurious "NUMA placement failed, performance might be affected" message on ARM Ian Campbell
2014-04-28 9:55 ` Dario Faggioli
2014-04-28 10:01 ` Ian Campbell
2014-04-28 10:25 ` Dario Faggioli
2014-04-28 11:30 ` Ian Campbell
2014-04-28 12:15 ` Andrew Cooper
2014-04-29 15:36 ` Dario Faggioli
2014-04-28 12:23 ` Dario Faggioli [this message]
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