Re: Celeron doesn't reach proper BogoMIPS
H. Peter Anvin (hpa@transmeta.com)
28 Aug 1999 10:15:12 GMT
Followup to: <199908280816.KAA00657@cave.BitWizard.nl>
By author: R.E.Wolff@BitWizard.nl (Rogier Wolff)
In newsgroup: linux.dev.kernel
>
> I'd say that you might be right, but I see ...
>
> > model name : Celeron (Mendocino)
> > cpu MHz : 398.711756
> > bogomips : 97.89
>
> .... that somehow the correct number of MHz has been detected. The
> number makes me suspect that it really is a measurement and not a
> value from an eeprom or something like that.
>
That it is; it compares the CPU time stamp counter to the timer
clock. However, if you're doing thermal throttling (STPCLK asserted),
then the TSC will still advance.
-hpa
--
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
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