[ksh93-integration-discuss] [osol-code] extremly bad performance of Solaris regex

[Garrett D'Amore]

Don't most 3rd party software apps use a version of either GNU regex or 
perl regex?

(As a sidebar, I do recall that some time ago, I found perl's regular 
expression code, running perl, was only about 10% slower for a 
reasonably complex regular expression, compared to a hand-optimized C 
version that didn't use any regular expression library. This was 
probably about a decade ago on Sun Sparc 10 hardware... yes, that's 
sun4m I'm talking about. ;-) And the regular expression was a full match 
on HTTP log messages, as reported by the then current NCSA server. 
(Pre-Apache days... :-) I was astounded and very pleased with perl as a 
result.

-- Garrett

Glenn Fowler wrote:
> can you point me to the RegexTest.java used?
>
> -- Glenn Fowler -- AT&T Research, Florham Park NJ --
>
> On Wed, 31 Oct 2007 06:20:02 +0100 Roland Mainz wrote:
>   
>> Jens Elkner wrote:
>> [CC:'ing ksh93-integration-discuss at opensolaris.org since libast belongs
>> to this project]
>>     
>>>                  regex.c                          RegexTest.java    MHz
>>> Solaris sparc    13.12u  0.01s  0:13.17  99.6%    5569 ms           1503
>>> Solaris x86       6.28u  0.00s  0:06.29  99.8%    2571 ms           2813
>>> Linux i686        0.704u 0.004s 0:00.70 100.0%    5587 ms           2079.593
>>>       
>
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