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Re: [Xen-devel] cpufreq status information

To: "Tian, Kevin" <kevin.tian@xxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxxxx>
Subject: Re: [Xen-devel] cpufreq status information
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Mon, 08 Sep 2008 16:04:13 +0100
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On 8/9/08 15:49, "Tian, Kevin" <kevin.tian@xxxxxxxxx> wrote:

>> The advantage of the latter is that the frequency changes are
>> interleaved
>> with other stuff you care about, like what's being scheduled,
>> what's on run
>> queues etc. Since obviously frequency information all by
>> itself is not so
>> interesting.
>> 
> 
> Yes, we already have many examples within dom0 to retrieve xen
> specific information bypassing dom0. By the way, we have the plan
> to add xentrace events for all processor PM stuff, including freq
> change and also cpu idle states transition (like break causes, etc.)

It's good to know there are other users and developers of xentrace!

 -- Keir



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