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Re: [Xen-devel] Re: CPU usage for credit2


  • To: Yuehai Xu <yuehaixu@xxxxxxxxx>
  • From: George Dunlap <George.Dunlap@xxxxxxxxxxxxx>
  • Date: Fri, 24 Sep 2010 17:24:04 +0100
  • Cc: xen-tools@xxxxxxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx, yhxu@xxxxxxxxx
  • Delivery-date: Fri, 24 Sep 2010 09:24:49 -0700
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On Fri, Sep 24, 2010 at 3:14 PM, Yuehai Xu <yuehaixu@xxxxxxxxx> wrote:
> So, the result that I got, which shows almost 100% usage of CPU for
> each VCPU, is actually because the VCPUs use different PCPUs instead
> of a single one, is that correct?

Yes, that's right.

>> If you want, you can try to use cpu pools to isolate the two VMs to a single
>> PCPU.  I haven't tried credit2 with pools yet, but in theory it should work.
>
> Ok, I will try it and tell you the result once I get it.

Cool -- good luck!

 -George

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