Re: [Xen-devel] monitoring domain resource usage

[Diwaker Gupta <diwakergupta@xxxxxxxxx>]

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?
-- 
Diwaker Gupta
http://resolute.ucsd.edu/diwaker


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