On Mon, 2003-11-10 at 21:31, Stas Bekman wrote:
> Thanks Perrin for this comparison numbers, but I think you didn't provide 
> enough build information. Default build opts vary from release to release and 
> from OS to OS, you really need to show the whole perl -V to make these numbers 
> more useful.

Well, I'm not trying to do an analysis of compiler optimizations here. 
I built these the way I suspect almost everyone else does: all
defaults.  The main point was to see if there has been a degradation in
performance since 5.6.1, since I have been hearing that a lot.  The
results show clearly enough to me that there has not been, and they
agree with my previous benchmarks.  They also show that if you don't
need threads, it is very easy to build a Perl that performs
significantly better than the one that comes with Red Hat 9, so it's
worth doing if you are thinking about deploying a mod_perl app on Red
Hat 9 and concerned about performance.

> Though I think it's also compiled with ithreads, whereas all others are 
> without, so it's not a fair comparison across different perl versions.

That was actually the reason I included it: to get a sense of how much
ithreads hurt performance.  As you say though, the other options might
be affecting it as well.

- Perrin




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