OSH Parser Performance

We time $sh -n $file for various files under various shells, and repeat then run under cachegrind for stable metrics.

Source code: oil/benchmarks/osh-parser.sh

Raw files

Summary

Instructions Per Line (via cachegrind)

Lower numbers are generally better, but each shell recognizes a different language, and OSH uses a more thorough parsing algorithm. In thousands of "I refs".

shell label total lines thousand irefs per line
bash 118,863 15.1
dash 111,674 2.3
osh-native 118,863 13.3
osh-native-souffle 118,863 12.0

(zsh isn't measured because zsh -n unexpectedly forks.)

Average Parsing Rate, Measured on Two Machines (lines/ms)

Shell startup time is included in the elapsed time measurements, but long files are chosen to minimize its effect.

shell label total lines host no-host
dash 111,674 2,774
bash 118,863 707
osh-native-souffle 118,863 434
osh-native 118,863 420
osh-cpython 118,863 12

Per-File Measurements

Time and Memory

shell label elapsed ms user ms sys ms max rss MB num lines filename
dash 2 1 1 1 2,698 Build.sh
bash 5 3 1 3 2,698 Build.sh
osh-native-souffle 7 5 3 8 2,698 Build.sh
osh-native 8 6 2 8 2,698 Build.sh
osh-cpython 273 248 25 21 2,698 Build.sh
dash 2 2 0 1 2,512 abuild
bash 5 4 1 3 2,512 abuild
osh-native 9 7 2 9 2,512 abuild
osh-native-souffle 9 6 3 8 2,512 abuild
osh-cpython 370 347 24 21 2,512 abuild
dash 8 6 3 2 20,489 configure
bash 32 30 2 3 20,489 configure
osh-native-souffle 41 25 16 20 20,489 configure
osh-native 46 34 12 21 20,489 configure
osh-cpython 1,797 1,762 35 42 20,489 configure
dash 21 20 1 2 69,779 configure-coreutils
bash 77 77 0 3 69,779 configure-coreutils
osh-native-souffle 159 140 19 45 69,779 configure-coreutils
osh-native 160 137 23 51 69,779 configure-coreutils
osh-cpython 5,146 5,080 64 86 69,779 configure-coreutils
bash 5 4 2 3 2,029 configure-helper.sh
osh-native-souffle 6 3 3 8 2,029 configure-helper.sh
osh-native 7 4 2 8 2,029 configure-helper.sh
osh-cpython 262 237 25 21 2,029 configure-helper.sh
dash 1 1 0 1 1,733 functions
bash 4 3 1 3 1,733 functions
osh-native-souffle 6 4 2 8 1,733 functions
osh-native 6 4 2 8 1,733 functions
osh-cpython 250 233 18 20 1,733 functions
dash 4 3 1 2 9,661 ltmain.sh
bash 17 14 3 4 9,661 ltmain.sh
osh-native-souffle 19 15 4 15 9,661 ltmain.sh
osh-native 21 16 5 15 9,661 ltmain.sh
osh-cpython 841 811 30 28 9,661 ltmain.sh
dash 1 1 0 1 1,679 t4014-format-patch.sh
bash 3 2 1 3 1,679 t4014-format-patch.sh
osh-native-souffle 4 2 2 7 1,679 t4014-format-patch.sh
osh-native 4 1 3 7 1,679 t4014-format-patch.sh
osh-cpython 93 75 18 18 1,679 t4014-format-patch.sh
dash 1 1 0 1 3,123 t9300-fast-import.sh
osh-native-souffle 4 2 2 7 3,123 t9300-fast-import.sh
osh-native 4 2 3 7 3,123 t9300-fast-import.sh
bash 5 4 1 3 3,123 t9300-fast-import.sh
osh-cpython 99 82 17 18 3,123 t9300-fast-import.sh
bash 16 15 1 3 5,160 test-cmd-util.sh
osh-native-souffle 17 12 6 12 5,160 test-cmd-util.sh
osh-native 18 15 3 12 5,160 test-cmd-util.sh
osh-cpython 765 735 29 27 5,160 test-cmd-util.sh

Instruction Counts

shell label irefs num lines filename
dash 6,416,010 2,698 Build.sh
osh-native-souffle 33,366,100 2,698 Build.sh
bash 35,958,882 2,698 Build.sh
osh-native 37,897,528 2,698 Build.sh
dash 7,042,147 2,512 abuild
bash 43,761,475 2,512 abuild
osh-native-souffle 44,987,890 2,512 abuild
osh-native 45,776,956 2,512 abuild
dash 53,261,640 20,489 configure
osh-native-souffle 244,771,126 20,489 configure
osh-native 279,060,889 20,489 configure
bash 349,702,388 20,489 configure
dash 151,770,612 69,779 configure-coreutils
osh-native-souffle 833,113,532 69,779 configure-coreutils
bash 886,197,417 69,779 configure-coreutils
osh-native 904,154,816 69,779 configure-coreutils
osh-native-souffle 26,919,865 2,029 configure-helper.sh
osh-native 30,983,175 2,029 configure-helper.sh
bash 47,119,375 2,029 configure-helper.sh
dash 4,652,224 1,733 functions
osh-native-souffle 25,241,888 1,733 functions
bash 28,169,399 1,733 functions
osh-native 29,251,468 1,733 functions
dash 23,597,230 9,661 ltmain.sh
osh-native-souffle 98,827,227 9,661 ltmain.sh
osh-native 114,590,750 9,661 ltmain.sh
bash 172,930,991 9,661 ltmain.sh
dash 3,166,564 1,679 t4014-format-patch.sh
osh-native-souffle 10,902,131 1,679 t4014-format-patch.sh
osh-native 11,927,761 1,679 t4014-format-patch.sh
bash 25,314,918 1,679 t4014-format-patch.sh
dash 4,357,271 3,123 t9300-fast-import.sh
osh-native-souffle 12,802,049 3,123 t9300-fast-import.sh
osh-native 14,034,055 3,123 t9300-fast-import.sh
bash 41,138,083 3,123 t9300-fast-import.sh
osh-native-souffle 98,900,171 5,160 test-cmd-util.sh
osh-native 113,833,515 5,160 test-cmd-util.sh
bash 161,950,200 5,160 test-cmd-util.sh

Shell and Host Details

shell label shell id
bash bash-a553b4e3
dash dash-0ebcf347
osh-cpython osh-f09a8558
osh-native osh-017b1364
osh-native-souffle osh-native-souffle-f0a0dc83
host label host id
no-host no-host-e5b8d3ee

Raw Data

filename
no-host.2024-09-29__15-14-39.cachegrind.tsv
no-host.2024-09-29__15-14-39.times.csv