Re: [PATCH 0/2] Credit2: introduce per-vcpu hard and soft affinity

[Dario Faggioli <dario.faggioli@citrix.com>]

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On Sat, 2014-11-29 at 14:33 -1000, Justin T. Weaver wrote:
> Hello,
> 
Hi Justin,

First of all, this is, overall, a really good submission. The only thing
you need to add is a few references.

For example, you already sent something in the past (an RFC, IIRC).
Mention it in the cover letter (I personally also add a link to the
thread).

> I tested this series on a NUMA machine with Dario Faggioli's "fix
> per-socket runqueue setup" patch series applied. Without it, the credit2
> scheduler only creates one run queue, regardless of the type of machine.
> 
Yes, I'll resubmit an updated version of that series soon.

So, how did the testing went? Since you're not saying anything, I
imagine that, at least functionally, everything works, at least as far
as you can tell, isn't it so? :-)

At least as far as soft-affinity is concerned, it should not be too
difficult to collect some numbers, to show that it is bringing benefits,
at least for some workloads.

Do you think you'll be able to do something like that?

When doing this same thing for credit1, here's what I did:
http://lists.xen.org/archives/html/xen-devel/2013-02/msg00009.html
https://blog.xenproject.org/2013/03/14/numa-aware-scheduling-development-report/

Regards,
Dario

-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)


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