Doug Barton <dougb_at_FreeBSD.org> writes: [...] > My reason is simple, performance. While doing some portmaster work > recently I was regression testing some changes I made to the --index* > options and noticed that things were dramatically slower than the last > time I tested those features. Thinking that I had made a programming > mistake I dug into my code, and while the regexps that I was using could > be tuned for slightly better performance the problem was not in my code. > I then installed textproc/gnugrep to compare, and the differences were > very dramatic using a highly pessimized test case (finding a match on > the last line of INDEX). The script I used to test is at > http://people.freebsd.org/~dougb/grep-time-trial.sh.txt and a typical > result was: > > GNU grep > Elapsed time: 2 seconds > > BSD grep > Elapsed time: 47 seconds Why not allow people to use grep(1) from ports in portmaster, e.g. by not overriding user-specified PATH?Received on Fri Aug 13 2010 - 09:33:12 UTC
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