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SubjectRe: Who ate my BogoMIPS?!
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This is where it gets intersting in a hurry, the same machine will
appear as 500, 600, 650, 700 or 750MHz both with AC and without AC on
successive reboots. There seem actually to be little logic in it. I've
now rebooted since I originally posted the first mail, and I'm now
identified as 600MHz, as opposed to 650MHz about an hour ago.

Anyway, being used to a 486dx-40 I don't see the above as a huge
problem... :]

cheers,
Alexander

Joel Jaeggli <joelja@darkwing.uoregon.edu> writes:

> the mobile pentium III's will operate at 500mhz when disconnected from
> power in order to conserve the battery unless you disable this
> functionality in the bios(which yoou can do at the expense of some
> battery life)...
>
> you should see the lower bogomips result when booting without the laptop
> connected to ac power...
>
> joelja
>
> On 11 Sep 2000, Alexander Hoogerhuis wrote:
>
> > A similar issue here that has cropped up with a few laptops I've
> > tried: The measured BogoMIPS and CPU clock speed varies from boot to
> > boot.
> >
> > The machines are all Compaq Armada M700's, all models are PIII-500,
> > PIII-600, PIII-650, PIII-700 and PIII-750's. Any one of these models
> > will be randomly detected as having any speed that is either a)
> > correct or b) of any model below it.
> >
> > It has always been tried on a kernel with APM, 2.2.14-17. If anyone
> > wants more info, feel free to ask for moer info.
> >
> > cheers,
> > Alexander
> >
> > Bernd Kischnick <kisch@mindless.com> writes:
> >
> > > I'm sure I missed some redefinition,
> > > but lately I noticed that the BogoMIPS count
> > > for my PowerMac has dropped rather significantly.
> > >
> > > My logs still show kernel 2.4.0-test6 at 166.30 BogoMIPS ---
> > > and now there are only 14.23 left! (since -test7)
> > >
> > > CPU showing signs of age?
> > > Should I invest in a new computer?
> > > By the way, has someone tested Linux on Apple's cube? ;-)
> > >
> > > - Bernd
> > > -
> > > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> > > the body of a message to majordomo@vger.kernel.org
> > > Please read the FAQ at http://www.tux.org/lkml/
> >
> >
>
> --
> --------------------------------------------------------------------------
> Joel Jaeggli joelja@darkwing.uoregon.edu
> Academic User Services consult@gladstone.uoregon.edu
> PGP Key Fingerprint: 1DE9 8FCA 51FB 4195 B42A 9C32 A30D 121E
> --------------------------------------------------------------------------
> It is clear that the arm of criticism cannot replace the criticism of
> arms. Karl Marx -- Introduction to the critique of Hegel's Philosophy of
> the right, 1843.

--
Alexander Hoogerhuis | Office: +44 (141) 891 4112
Graham Technology | Mobile: +44 (7720) 351 918
FYI: perl -e 'print $i=pack(c5,(41*2),sqrt(7056),(unpack(c,H)-2),oct(115),10);'
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