Re: [Xen-users] CPU load average above 2 on domU but load average 0 on dom0-XCP 1.6

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Thu, 2012-12-06 at 13:06 +0000, kevin parker wrote:
> Hi Ian,
>          Please correct me if i am wrong.From my
> understanding(Eventhough it seems wrong) All the process in domU polls
> its cpu which is actually virtual and process queue in this virtual
> cpu is processed by the actual CPU in which hypervisor has direct
> access to it.In that case if there are lot of process in the process
> queue of domU waiting to get cpu of domU,then wouldnt that affect
> actual CPU,since it is the actual processor that process the process
> queue of  domU.(Even though It seems wrong).

Are you perhaps confusing the load on the physical processors with the
load on the dom0 VCPUs? They are separate things, dom0's CPUs are VCPUs
just like a domU's CPUs.

I'm not sure what you mean by a process in domU polling its CPU. domU
(and dom0) VCPUs are scheduled on PCPUS (physical CPUS).

Ian.



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