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

["Steven Peckins" <sep16@xxxxxxx>]

'xl top' reveals real-time information about resource utilization.  'xl  
info' is also useful for gleaning information about the hardware (vs. just  
Dom0, for instance).
--steve

On Thu, 06 Dec 2012 09:23:32 -0500, kevin parker  
<kevin.parker092@xxxxxxxxx> wrote:
>  Sorry for making things complicated.. yes i was considering load on
> physical CPU with load on dom0 VCPU.I thought running top on dom0 reveals
> overall cpu usage as in case of normal system.I forgot to consider it as
> another Virtual Machine.If this is correct then is there a way to see the
> actual cpu utilization.
>
> Regards,
> kev
>
> On Thu, Dec 6, 2012 at 6:43 PM, Ian Campbell  
> <Ian.Campbell@xxxxxxxxxx>wrote:
> > 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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