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Re: [Xen-devel] Support for CPU frequency scaling in Xen
| To: | "Vahid Kazempour" <kazempour@xxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Support for CPU frequency scaling in Xen |
| From: | "Niraj Tolia" <ntolia@xxxxxxxxx> |
| Date: | Tue, 3 Jun 2008 23:03:35 -0700 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Tue, 03 Jun 2008 23:03:58 -0700 |
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On Tue, Jun 3, 2008 at 9:24 PM, Vahid Kazempour <kazempour@xxxxxxxxx> wrote: > Hi, > > Does Xen provide support for CPU frequency scaling? > If there exists such support, from which version they support it? In short, yes but YMMV. I saw a few patches on the list that added frequency scaling to the hypervisor itself but I don't know the current status for that. They should be in xen-unstable. Another option is to set 'cpufreq=dom0-kernel' as an option for xen and run cpufreqd in dom0. I have tested this on Intel's Core2 Duo and AMD's Opterons. Xen 3.2.1 should have what you need but it is quite possible that a previous version will also work. Cheers, Niraj > Otherwise what problems do exist in support frequency scaling in Xen? > > Thanks, > Vahid > > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxxxxxxxx > http://lists.xensource.com/xen-devel > > -- http://www.hpl.hp.com/personal/Niraj_Tolia/ _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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