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Message from discussion benchmarking - it's now all(-1,0,1,5,6)% faster
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 More options Jan 11 2003, 10:48 pm
Newsgroups: perl.perl5.porters
From: h...@crypt.org
Date: Sun, 12 Jan 2003 03:44:06 +0000
Local: Sat, Jan 11 2003 10:44 pm
Subject: Re: benchmarking - it's now all(-1,0,1,5,6)% faster
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Nicholas Clark <n...@unfortu.net> wrote:

:So I'm confused. It looks like some bits of perl are incredibly sensitive to
:cache alignment, or something similar. And as a consequence, perlbench is
:reliably reporting wildly varying timings because of this, and because it
:only tries a few, very specific things. Does this mean that it's still useful?

I think I remember seeing a profiler that emulates the x86 instruction set,
and so can give theoretically exact timings. Does this ring a bell for
anyone? I don't know if the emulation extended to details such as RAM
and cache sizes ...

Hugo


 
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