Re: [Xen-devel] Possible Bug in CPU detection / clock skew?

[Keir Fraser <keir@xxxxxxxxxxxxx>]

On 3/1/07 17:25, "Alexander Wilms" <alex.wilms@xxxxxxxxxxxxx> wrote:

> I have a very strange clock skew problem on my Server since running Xen 3.0.3
> that I have never seen before on the same machine running Xen 2.0.x.
> 
> Now I compared boot messages from the old and new installation and I saw a
> huge difference in the reported CPU speeds under 3.0.3 hypervisor. Could this
> be a reason for the clock skew? Excuse me if the question is stupid, I'm not
> a CPU expert...

It does seem likely. The old messages were correct and the new ones are
wrong, for some reason. I don;t think the calibration code has changed
significantly but I'd have to check that.

 -- Keir



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