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Re: [Xen-devel] Poor performance on HVM (kernbench)
| To: | "Steve Ofsthun" <sofsthun@xxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Poor performance on HVM (kernbench) |
| From: | "Todd Deshane" <deshantm@xxxxxxxxx> |
| Date: | Wed, 10 Sep 2008 22:50:29 -0400 |
| Cc: | Daniel Magenheimer <dan.magenheimer@xxxxxxxxxx>, xen-devel mailing list <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Wed, 10 Sep 2008 19:50:53 -0700 |
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| Reply-to: | deshantm@xxxxxxxxx |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
> I think what Dan is getting at is, the native execution run should restrict > it's cpu and memory usage to be identical with the guest tests. So restrict > the native test cpus with "maxcpus=1" or "nosmp" on the boot line. > Similarly you can restrict memory using "mem=xxxM". Linux kernel (only had a spare Ubuntu 2.6.24) to work with nosmp mem=2048M Average Optimal load -j 4 Run (std deviation): Elapsed Time 403.744 (0.26857) User Time 373.23 (0.421485) System Time 30.32 (0.389551) Percent CPU 99 (0) Context Switches 90961.2 (105.838) Sleeps 52311.8 (83.8373) _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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