I want to re-compile agrep (the super approximate matching grep from the
glimpse project) to be as fast as possible. This is on a box with Mandrake 5.x
so the compilers I have available there are
[niall at penguin agrep]$ gcc --version
2.7.2.3
[niall at penguin agrep]$ egcs --version
egcs-2.90.29 980515 (egcs-1.0.3 release)
Can any of you whizz-bang programmers suggest some option sets to try for maximum
performance - the processor is an AMD K6-II. Of course if there's some big improvement
with a later egcs I'd happily compile on another box with that version. I've compiled
with gcc with no -m or -O specified and with egcs -m486 -O6 and there's no measurable
difference on my benchmark file which is 270000 lines / 22 MB.
Kindest regards,
Niall O Broin
UNIX Network Administrator nobroin at esoc.esa.de
Ground Systems Engineering Department Ph./Fax +49 6151 90 3619/2179
European Space Operations Centre, Darmstadt, Germany
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