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.
Marcus
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? :-)
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