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Re: SUMMARY: pentium optimized debian discussion

On Wed, Jul 29, 1998 at 09:49:06AM -0700, Stephen Zander wrote:
> >>>>> "Marcus" == Marcus Brinkmann <Marcus.Brinkmann@ruhr-uni-bochum.de> writes:
>     Marcus> Ha! What makes you think that BogoMIPS tell you anything
>     Marcus> about your processor? From the BogoMIPS mini-HOWTO:
> I didn't expect it meant anything useful. I was more interested in the
> difference between that & my previous laptop, an IBM 760CD (Pentium
> 90) which did ~40.  There's no way clock spped alone accounts for an
> order of magnitude increase.

The relationship is in no way linear. For example:

       System                 BogoMips                          Comparison
       Intel Pentium          clock * (0.40  plusminus 0.035)    2.2
       Intel 486/AMD 5x86     clock * (0.50  plusminus 0.01)     2.8

       Pentium MMX            clock * (2.00)                    11.1

So, only for a single processor type the clock rate has a fixed relation to
the BogoMIPS. Switch the processor, and you can't compare anymore.

  8.  Why to pay attention to BogoMips
  2. To see whether your system is faster than mine. Of course this is
     completely wrong, unreliable, ill-founded, and utterly useless, but
     all benchmarks suffer from this same problem. So why not use it?
     This inherent stupidity has never before stopped people from using
     benchmarks, has it? :-)

"Rhubarb is no Egyptian god."        Debian GNU/Linux        finger brinkmd@ 
Marcus Brinkmann                   http://www.debian.org    master.debian.org
Marcus.Brinkmann@ruhr-uni-bochum.de                        for public  PGP Key
http://homepage.ruhr-uni-bochum.de/Marcus.Brinkmann/       PGP Key ID 36E7CD09

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