From: Christian Roessner <christian@roessner-net.com>
To: Keir Fraser <Keir.Fraser@cl.cam.ac.uk>
Cc: xen-devel@lists.xensource.com
Subject: Re: DomU Powernow question
Date: Thu, 15 Jun 2006 14:12:31 +0200 [thread overview]
Message-ID: <44914EAF.3020108@roessner-net.com> (raw)
In-Reply-To: <0c608b86d8a997d1fb093d10875083c3@cl.cam.ac.uk>
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Hi,
Keir Fraser schrieb:
>
> On 15 Jun 2006, at 11:38, Christian Roessner wrote:
>
>> My question is, why the cpu frequency in dom0 ist not jumping to 2GHz,
>> if the cpu usage inside a domU is very high?
>
> I'm not sure what triggers frequency changes in the dom0 kernel. It is
> probably not accounting for work done in other domains. That would
> likely require a new policy kernel module, or a user-space daemon to
> gather stats from other domains.
As someone who really does not know anything about the hypervisor, I may
ask, why the scaling stuff is not done by the hypervisor?
--
Tel.: 0641-2097252, Mobil: 0171-3611230
PGP: http://www.roessner-net.com/0x6B929997.asc
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next prev parent reply other threads:[~2006-06-15 12:12 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-15 10:38 DomU Powernow question Christian Roessner
2006-06-15 12:05 ` Keir Fraser
2006-06-15 12:12 ` Christian Roessner [this message]
2006-06-19 11:05 ` Petersson, Mats
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