Re: [Xen-devel] monitoring domain resource usage

["Matthieu PATOU" <mat@xxxxxxxxx>]

On October 20, 1:53 am Diwaker Gupta <diwakergupta@xxxxxxxxx> wrote:
> On Tue, 19 Oct 2004 21:52:59 +0100, Neugebauer, Rolf
> <rolf.neugebauer@xxxxxxxxx> wrote:
> >  There currently is no such tool, however xen exports via the control
> >  interface to dom0 the relevant information. E.g. 'xm list' reports cpu
> >  time consumed per VM. It should be straight forward to implement a
> >  tool periodically calling this interface and compute CPU percentages.
> >  This could either be done via the 'xm' interface or the
> >  xen.lowlevel.xc interface. The latter should have less overhead.
>
> I played around with 'xm list' but soon ran into problems. I'm not
> sure if this is specific to a particular CPU scheduler, or a general
> problem that others have noticed too.
>
> Right now I have xen (booted using sched=atropos) running two VMs,
> each running a CPU intensive job. However, the cpu-time (as reported
> by xm list -l) does not seem to be changing *at all*, even across runs
> lasting for minutes. The uptime gets updated properly, though.
>
> Is this a known issue?
> --
Does your domain really use cpu ? if not cpu usage should not vary a lot in
a couple of minutes ... run a find / to see if you see something moving ...


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