Re: [Xen-devel] [PATCH 1 of 3] libxl: take node distances into account during NUMA placement

[George Dunlap <george.dunlap@xxxxxxxxxxxxx>]

On 19/10/12 00:20, Dario Faggioli wrote:
> On Thu, 2012-10-18 at 16:17 +0100, George Dunlap wrote:
> > On Tue, Oct 16, 2012 at 6:26 PM, Dario Faggioli
> > <dario.faggioli@xxxxxxxxxx> wrote:
> > > In fact, among placement candidates with the same number of nodes, the
> > > closer the various nodes are to each others, the better the performances
> > > for a domain placed there.
> > Looks good overall -- my only worry is the N^2 nature of the
> > algorithm.  We're already doing some big combinatorial thing to
> > generate the candidates, right?
> It is, with N being the number of nodes, which we discussed thoroughly
> already a couple of months ago, and reached consensus on the fact that N
> will stay less than 8 for the next 5 (but probably even more) years. :-)
>
> In any case, if something really unexpected happens, and N jumps to
> anything bigger than 16, the placement algorithm won't even start, and
> we'll never reach this point!.
Ah, right -- Yes, I think the "safety valve" was the thing I wanted to 
have in place.
In that case:

Acked-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx>


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