Re: CPU specific/optimized Debian builds ?
On Wed, 2002-05-29 at 22:16, Andrew Suffield wrote:
> On Wed, May 29, 2002 at 09:48:33AM +0200, Ulrich Eckhardt wrote:
> > Hmmm, everyone can do so on their own machines easily .... how are the
> > results on yours ? :)
> >
> > I'll give it a more systematic try with a linux-kernel sourcetree instead of
> > my cvsroot, but that's later today.
>
> That is not a deterministic test. It doesn't provide a particularly
> useful benchmark; it involves a semi-random pattern of disk access
> which is hopelessly skewed by environmental factors.
Far from being a "deterministic" test, it's not a test of CPU at all.
The CPU will be mostly idle waiting for data from the hard disk and bus.
> If you are trying to do a benchmark on processor-related performance
> changes (which it seems like you are), you will have to construct a
> benchmark which actually measures that (no, I don't have any
> suggestions offhand).
Ray tracing tends to be pretty CPU intensive, how about using povray?
Of course, to get "real" results, you'll need it to trace a rather large
scene a few times with each buildarch, throw away any outliers and draw
the mean of the rest.
James.
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