A little speed up for awk

Jeroen Ruigrok/asmodai asmodai at wxs.nl
Sun Oct 31 01:53:25 PDT 2004


-On [20041031 00:42], Matthew Dillon (dillon at xxxxxxxxxxxxxxxxxxxx) wrote:
>    Well, that's a fine little patch but I really doubt it will
>    make much of a dent in awk's performance.

It did for this case.

>    If you really want to have a go at tracking down potential
>    performance issues I recommend first doing some side-by-side
>    comparisons between the old and new awk and then compiling
>    up the new awk with profiling (-pg) and seeing if there is
>    anything obvious in the profile output that could be fixed.
>    The issue is likely to be algorithmic in nature.

http://www.in-nomine.org/~asmodai/awk.txt is the profiling output in
question.

http://www.in-nomine.org/~asmodai/mawk.txt is mawk's profiling of the same
case.

-- 
Jeroen Ruigrok van der Werven <asmodai(at)wxs.nl> / asmodai / kita no mono
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Nothing yet from nothing ever came...





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