[bug #14472] grep is slow in multibyte locales

[Arkadiusz Miskiewicz]

Follow-up Comment #14, bug #14472 (project grep):

Same here. Extremally slow.

grep-2.5.3-2.x86_64

$ export LANG=C
$ time grep FREE LOG-POLISH > x
grep --colour=auto FREE LOG-POLISH > x  0.02s user 0.00s system 26% cpu 0.089
total
$ time grep FREE LOG-POLISH > x
grep --colour=auto FREE LOG-POLISH > x  0.02s user 0.00s system 43% cpu 0.061
total
$ time grep FREE LOG-POLISH > x
grep --colour=auto FREE LOG-POLISH > x  0.02s user 0.01s system 45% cpu 0.066
total
$ time grep FREE LOG-POLISH > x
grep --colour=auto FREE LOG-POLISH > x  0.02s user 0.00s system 41% cpu 0.064
total

Now the turtle mode.

$ export LANG=pl_PL.UTF-8
$ time grep FREE LOG-POLISH > x
grep --colour=auto FREE LOG-POLISH > x  56,99s user 0,00s system 99% cpu
57,002 total
$ time grep FREE LOG-POLISH > x
grep --colour=auto FREE LOG-POLISH > x  57,81s user 0,02s system 99% cpu
57,843 total
$ time grep FREE LOG-POLISH > x
grep --colour=auto FREE LOG-POLISH > x  57,48s user 0,01s system 99% cpu
57,499 total


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