Re: Re: Centrino speedstep

Bruno Ducrot
2004-12-30T11:07:23Z

On Thu, Dec 30, 2004 at 11:30:03AM +0100, Dominik Brodowski wrote:
> On Thu, Dec 30, 2004 at 10:32:20AM +0100, Johan Vromans wrote:
> > Dominik Brodowski <linux-X3ehHDuj6sIIGcDfoQAp7BvVK+yQ3ZXh@public.gmane.org> writes:
> >
> > > Yes, indeed. These seem to be the right places for modification.
> >
> > Okay, will do.
> >
> > However, that brings up an interesting question: what guarantees that
> > the figures in the tables match the actual capabilities of the CPU?
> > Currently, it seems that my 1.5Ghz CPU is happily running at 1.6Ghz.
>
> Run "x86info --mhz" and you'll most probably see the CPU runs at 1.5GHz
> even though it is reported by ACPI as 1.6GHz.
>

Its maybe possible to get MSR MSR_IA32_PERF_STATUS and decode it in
userspace?

Cheers,

--
Bruno Ducrot

-- Which is worse: ignorance or apathy?
-- Don't know. Don't care.