From: Wei Liu <wei.liu2@citrix.com>
To: Dario Faggioli <dario.faggioli@citrix.com>
Cc: Juergen Gross <jgross@suse.com>, Wei Liu <wei.liu2@citrix.com>,
Anshul Makkar <anshul.makkar@citrix.com>,
Ian Jackson <ian.jackson@eu.citrix.com>,
George Dunlap <george.dunlap@citrix.com>,
xen-devel@lists.xenproject.org
Subject: Re: [PATCH v2] libxl: avoid considering pCPUs outside of the cpupool during NUMA placement
Date: Fri, 21 Oct 2016 14:51:11 +0100 [thread overview]
Message-ID: <20161021135111.GX2639@citrix.com> (raw)
In-Reply-To: <147705777085.26968.8266354656960221924.stgit@Solace.fritz.box>
On Fri, Oct 21, 2016 at 03:49:30PM +0200, Dario Faggioli wrote:
> During NUMA automatic placement, the information
> of how many vCPUs can run on what NUMA nodes is used,
> in order to spread the load as evenly as possible.
>
> Such information is derived from vCPU hard and soft
> affinity, but that is not enough. In fact, affinity
> can be set to be a superset of the pCPUs that belongs
> to the cpupool in which a domain is but, of course,
> the domain will never run on pCPUs outside of its
> cpupool.
>
> Take this into account in the placement algorithm.
>
> Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com>
> Reported-by: George Dunlap <george.dunlap@citrix.com>
> Reviewed-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Release-acked-by: Wei Liu <wei.liu2@citrix.com>
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prev parent reply other threads:[~2016-10-21 13:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-21 13:49 [PATCH v2] libxl: avoid considering pCPUs outside of the cpupool during NUMA placement Dario Faggioli
2016-10-21 13:51 ` Wei Liu [this message]
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