Re: [Xen-devel] RFC: Still TODO for 4.2? xl domain numa memory allocation vs xm/xend

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Fri, 2012-01-20 at 16:02 +0000, Dario Faggioli wrote:
> On Fri, 2012-01-20 at 15:06 +0000, Ian Campbell wrote: 
> > On Fri, 2012-01-20 at 13:11 +0000, Ian Campbell wrote:
> > 
> > > Your patches do the affinity setting pretty early so I'm not sure what's
> > > going on.
> > 
> > The cpu affinities are set and d->node_affinity is getting correctly
> > updated to only include one node before any memory is allocated to the
> > domain, yet memory appears to be being allocated on both nodes.
> > 
> I'm also looking into this and NOT finding an answer... Yet. Will keep
> investigating and report back as soon as I get what's happening...

I think I made the rather basic c*ckup of using a domain configured with
more memory than is in any single node.

/me dons the brown paper bag.

With your affinity patches and the domain restricted to a single node
via cpu affinity The Right Thing seems to happen.

cpupools don't seem to do this, I don't know if that is expected or not.

Ian.


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