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Re: [Xen-users] which cpu?


  • To: Xen Users <xen-users@xxxxxxxxxxxxxxxxxxx>
  • From: Lei Lu <llu@xxxxxxxxx>
  • Date: Tue, 24 Aug 2010 07:59:26 -0400
  • Delivery-date: Tue, 24 Aug 2010 05:02:14 -0700
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

In my experience it is only dom0, domU is about 1-2% when doing heavy
io, but dom0 can go to 20%.

Best,
Lei

On Mon, Aug 23, 2010 at 9:19 PM, Fajar A. Nugraha <fajar@xxxxxxxxx> wrote:
> On Tue, Aug 24, 2010 at 5:51 AM, Paras pradhan <pradhanparas@xxxxxxxxx> wrote:
>> Which cpu is hit when domU does the heavy disk IO? dom0 cpu or domU cpu? I
>
> Should be both.
>
>> can see tapdisk in dom0 eating CPU.  I have (dom0-cpus 1) setup in xen
>> config.
>
> In my experience using tapdisk increase dom0 CPU load even more
> compared to phy:/ with LVM-backed domUs.
>
> --
> Fajar
>
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