Re: [Xen-devel] [PATCH 03 of 10 v2] xen: sched_credit: let the scheduler know about node-affinity

[George Dunlap <george.dunlap@xxxxxxxxxxxxx>]

On 20/12/12 08:39, Juergen Gross wrote:
> Am 20.12.2012 09:33, schrieb Dario Faggioli:
> > On Thu, 2012-12-20 at 08:25 +0000, Juergen Gross wrote:
> > > > BTW, can you be a little bit more specific about where you're suggesting
> > > > to put it? I'm sorry but I'm not sure I figured what you mean by "the
> > > > scheduler private per-pcpu area"... Do you perhaps mean making it a
> > > > member of `struct csched_pcpu' ?
> > > Yes, that's what I would suggest.
> > Ok then, functionally, that is going to be exactly the same thing as
> > where it is right now, i.e., a set of global per_cpu() variables. It is
> > possible for your solution to bring some cache/locality benefits,
> > although that will very much depends on single cases, architecture,
> > workload, etc.
> The space is only allocated if sched_credit is responsible for the pcpu.
That makes sense.
 -George


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