On Tue, Jul 23, 2002 at 08:54:29PM +0000, Angel Faus wrote: > As a result of this bugfix, very simple regular expressions get a > noticable speed-up. > > For example, this is the data of matching the pattern /^zza/ against > "zzabbbbbbbbbcdcdcdcdzz" 100.000 times, with the loop inside parrot > (or perl5) > > parrot, without the patch 12.834 seconds > parrot, with the patch 1.216 seconds > > perl 5 0.21 seconds > > This is of course not representative data, the speed-up is much > smaller for the average regex.
I cannot remember if I asked this before: As perl5 gets a good kick of its regexp speed from the optimiser, it makes it very hard to benchmark parrot's regexp engine against perl's engine. Is there an easy way any regexp internals guru can suggest to patch perl5's regexp code to disable the optimiser? This would make it much easier to get meaningful test result comparisons between perl5 and parrot, and also give an idea of what sort of regexps in parrot will gain from future work on parrot regexp optimisers? Nicholas Clark -- Even better than the real thing: http://nms-cgi.sourceforge.net/
