Re: [Xen-devel] Re: xl miss the logic of memory allocation on NUMA platform

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Thu, Jul 28, 2011 at 12:26:06PM +0100, Stefano Stabellini wrote:
> On Thu, 28 Jul 2011, Zhang, Yang Z wrote:
> > Hi Stefano
> > In our recently experience, we found xl doesn't have the memory allocation 
> > logic on NUMA platform. It will allocate the memory from every node when 
> > creating guest:
> > (XEN) Domain 4 (total: 261112):
> > (XEN)     Node 0: 64894
> > (XEN)     Node 1: 65406
> > (XEN)     Node 2: 65406
> > (XEN)     Node 3: 65406
> > 
> > For xm, it will allocate the memory on the node where the guest cpu reside:
> > 1348 (XEN) Domain 3 (total: 263160):
> > 1349 (XEN)     Node 0: 0
> > 1350 (XEN)     Node 1: 0
> > 1351 (XEN)     Node 2: 0
> > 1352 (XEN)     Node 3: 263160
> > 
> > Is there a plan to add this logic to xl?
> 
> I think we forgot about this feature but it is important and hopefully
> somebody will write a patch for it before 4.2 is out.
> 

I just added a note about this to Xen 4.1 release notes:
http://wiki.xen.org/xenwiki/Xen4.1

-- Pasi


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