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Re: performance tweaking benchmarking (was Re: Tweaked config for Solaris/sparc == 30% perfomance boost)

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From:
Jarkko Hietaniemi
Date:
January 9, 2001 10:23
Subject:
Re: performance tweaking benchmarking (was Re: Tweaked config for Solaris/sparc == 30% perfomance boost)
Message ID:
20010109122304.D6541@chaos.wustl.edu
On Tue, Jan 09, 2001 at 04:46:12PM +0000, Nicholas Clark wrote:
> On Tue, Jan 09, 2001 at 04:17:31PM +0000, Alan Burlison wrote:
> > Interestingly enough, the difference between the 'make test' results is
> > only about 15%.  I suspect this is because the test suite is a series of
> > relatively short 'straight line' code that doesn't involve lots of loops
> > or object creation.
> 
> > The moral of the story is the test suite is not a good benchmark.
> 
> What is? perlbench?

Ahh, the perlbench with which we could never get in agreement whether
we wanted high or low numbers :-)

The problem with all articial benchmarks is that they are artificial.
You can sell PCs with Hz and supercomputers with LINPACKs, but what in
the real world matters is how fast real applications run.  The problems
with real applications are many: they are big, they depend on external
software and real word input, which might be again big, or proprietary,
or both.

-- 
$jhi++; # http://www.iki.fi/jhi/
        # There is this special biologist word we use for 'stable'.
        # It is 'dead'. -- Jack Cohen

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