[Xen-devel] Re: DomU Powernow question

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

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.
> Second question: If in dom0, which value is showing the correct
> information: the frequency or the bogomips? Normally the latter would
> change, if the frequency changes. Not so in dom0? Why?
The code to recompute bogomips is in a file that is not compiled for 
Xen.
 -- Keir


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