> > Keep in mind that due to cache alignment (and other) issues, runs of the same
> > executable can vary in speed by almost half depending on where in the buffer
> > cache they get placed.
> 
> I've never found a discrepance of 1/2 in any significant sized program, but
> I sometimes see variations of +/-5%.  (in gprof output etc)

Oh, I knew I should have mentioned that this was Linux :-)  I'm sure it's
possible elsewhere, but what I describe I saw under 2.0 Linux kernels.  I
wonder is 2.2 does the same thing....

Monty

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