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RE: [Xen-devel] RE: Updated XenMon Patch


  • To: "Diwaker Gupta" <diwaker.lists@xxxxxxxxx>
  • From: "Jeffrey Buell" <jbuell@xxxxxxxxxx>
  • Date: Fri, 28 Oct 2005 11:03:09 -0700
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Fri, 28 Oct 2005 18:00:48 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcXbo+co3RWwzn0pSlCY6ZfomO1JAgARACQQ
  • Thread-topic: [Xen-devel] RE: Updated XenMon Patch

> > My experiences so far:
> >
> > I tried this release on Changeset 7480 running on a 2P Xeon HT box.  No
> > issues patching or building Xen and the tools.  XenMon doesn't give
detailed
> > performance or profiling data, but it does give some very useful
high-level
> > CPU information with little effort by the user.
> 
> Thanks for your comments Jeff.
> 
> What kinds of performance/profiling data would you like to see
> instead? Atleast as far as the scheduler is concerned, I think its
> hard to do any better -- XenMon already reports things such as per
> domain blocking time, waiting time, number of memory page exchanges,
> number of times a VM is scheduled. It'll be very useful if you can
> give some concrete examples of the kinds of metrics you would want in
> such a tool.
> 
> Thanks,
> Diwaker

Diwaker,

I didn't mean to imply that XenMon is deficient in any way.  Only that it is
a different kind of performance tool than, say, a function-level tool like
Xenoprof.  XenMon works well for me now, the only suggestion I have is to
improve the formatting of the notlive output:  some numbers are printed with
12 significant figures and the columns are not well-aligned.

Jeff

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