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Benchmark for Vim regexp engine performance
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| Regular expressions and data from | |
| http://lh3lh3.users.sourceforge.net/reb.shtml | |
| Regular expressions benchmarked: | |
| URI ([a-zA-Z][a-zA-Z0-9]*)://([^ /]+)(/[^ ]*)? | |
| Email ([^ @]+)@([^ @]+) | |
| Date ([0-9][0-9]?)/([0-9][0-9]?)/([0-9][0-9]([0-9][0-9])?) | |
| URI|Email ([a-zA-Z][a-zA-Z0-9]*)://([^ /]+)(/[^ ]*)?|([^ @]+)@([^ @]+) | |
| Word .*SCSI- | |
| Results (in seconds): | |
| URI Email Date Sum3 URI|Email Word | |
| re=1 16.34 13.65 4.07 34.06 29.46 0.49 | |
| re=2 92.03 9.75 4.47 106.25 105.39 5.22 | |
| Python 2.7.3 2.69 5.17 1.01 8.87 7.72 3.40 | |
| Perl 5.14.2 0.35 0.33 0.32 1.00 8.12 0.31 | |
| GNU egrep 2.10 0.21 0.16 0.56 0.93 10.86 0.03 | |
| (Five runs each, Vim 7.3.1010, 64-bit i7-2700K CPU @ 3.50GHz x 8.) | |
| The Vim results were obtained with the bench.sh script. | |
| Python, Perl, and egrep were timed in similar fashion using these invocations: | |
| perl script.pl 'pattern' </path/to/data/howto >/dev/null | |
| python script.py 'pattern' </path/to/data/howto >/dev/null | |
| egrep 'pattern' /path/to/data/howto >/dev/null | |
| The data file "howto" (~38M) is available at | |
| http://people.unipmn.it/manzini/lightweight/corpus/howto.bz2 |
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| #!/bin/bash | |
| # Usage: ./bench.sh <engine> <script> | |
| # where engine is (1|2) | |
| # script is (uri|email|date|uriemail|word) | |
| VIM="/path/to/vim/src/vim" | |
| DATA="/path/to/data/howto" | |
| vimrc="vimrc-${1:-1}" | |
| rescript="re-${2:-word}.vim" | |
| cmd=( "${VIM}" -N -u "${vimrc}" -i NONE -n -e -s -S "${rescript}" +quit "${DATA}" ) | |
| echo "${cmd[@]}" >&2 | |
| tmpfile="/tmp/,,tmp.$$" | |
| for i in {1..5}; do | |
| \time -f '%e' -ao "${tmpfile}" "${cmd[@]}" &>/dev/null | |
| echo -n . >&2 | |
| done | |
| echo >&2 | |
| result=$( awk '{ sum += $1 } END { printf "%.2f", sum / 5 }' "${tmpfile}" ) | |
| rm -f "${tmpfile}" | |
| echo "${result}" |
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| g/\%([0-9][0-9]\=\)\/\%([0-9][0-9]\=\)\/\%([0-9][0-9]\%([0-9][0-9]\)\=\)/p |
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| g/\%([^ @]\+\)@\%([^ @]\+\)/p |
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| g/\%([a-zA-Z][a-zA-Z0-9]*\):\/\/\%([^ /]\+\)\%(\/[^ ]*\)\=/p |
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| g/\%([a-zA-Z][a-zA-Z0-9]*\):\/\/\%([^ /]\+\)\%(\/[^ ]*\)\=\|\%([^ @]\+\)@\%([^ @]\+\)/p |
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| g/.*SCSI-/p |
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| #!/usr/bin/env perl | |
| use strict; | |
| use warnings; | |
| my $reobj = qr/$ARGV[0]/; | |
| while (<STDIN>) { | |
| print $_ if /$reobj/; | |
| } |
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| #!/usr/bin/env python | |
| import re | |
| import sys | |
| reobj = re.compile(sys.argv[1]) | |
| for line in sys.stdin: | |
| if reobj.search(line): | |
| sys.stdout.write(line) |
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| if exists('®expengine') | |
| set regexpengine=1 | |
| endif |
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| if exists('®expengine') | |
| set regexpengine=2 | |
| endif |
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