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 13.2
osh-native-souffle 118,863 11.5

(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 2,686
bash 118,863 697
osh-native-souffle 118,863 444
osh-native 118,863 404
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 2 0 1 2,698 Build.sh
bash 5 2 2 3 2,698 Build.sh
osh-native-souffle 7 4 4 8 2,698 Build.sh
osh-native 9 5 5 8 2,698 Build.sh
osh-cpython 275 254 20 21 2,698 Build.sh
dash 2 2 0 1 2,512 abuild
bash 5 5 0 3 2,512 abuild
osh-native-souffle 9 9 0 8 2,512 abuild
osh-native 9 3 6 9 2,512 abuild
osh-cpython 375 351 24 21 2,512 abuild
dash 8 8 0 2 20,489 configure
bash 32 32 0 3 20,489 configure
osh-native-souffle 43 34 8 20 20,489 configure
osh-native 45 40 4 21 20,489 configure
osh-cpython 1,859 1,794 64 42 20,489 configure
dash 21 21 0 2 69,779 configure-coreutils
bash 78 78 0 3 69,779 configure-coreutils
osh-native-souffle 151 131 20 50 69,779 configure-coreutils
osh-native 170 146 24 46 69,779 configure-coreutils
osh-cpython 5,390 5,301 88 86 69,779 configure-coreutils
bash 5 5 0 3 2,029 configure-helper.sh
osh-native-souffle 7 3 3 8 2,029 configure-helper.sh
osh-native 7 0 7 8 2,029 configure-helper.sh
osh-cpython 270 249 20 21 2,029 configure-helper.sh
dash 2 2 0 1 1,733 functions
bash 4 4 0 3 1,733 functions
osh-native-souffle 6 6 0 8 1,733 functions
osh-native 7 7 0 8 1,733 functions
osh-cpython 256 240 16 20 1,733 functions
dash 4 4 0 2 9,661 ltmain.sh
bash 17 13 4 4 9,661 ltmain.sh
osh-native-souffle 20 16 4 15 9,661 ltmain.sh
osh-native 21 17 3 15 9,661 ltmain.sh
osh-cpython 868 852 16 28 9,661 ltmain.sh
dash 1 1 0 1 1,679 t4014-format-patch.sh
bash 4 4 0 3 1,679 t4014-format-patch.sh
osh-native-souffle 4 4 0 7 1,679 t4014-format-patch.sh
osh-native 4 0 4 7 1,679 t4014-format-patch.sh
osh-cpython 95 78 16 18 1,679 t4014-format-patch.sh
dash 1 1 0 1 3,123 t9300-fast-import.sh
osh-native-souffle 4 0 4 7 3,123 t9300-fast-import.sh
osh-native 4 0 4 7 3,123 t9300-fast-import.sh
bash 5 0 5 3 3,123 t9300-fast-import.sh
osh-cpython 104 80 24 18 3,123 t9300-fast-import.sh
bash 15 11 4 3 5,160 test-cmd-util.sh
osh-native-souffle 17 17 0 12 5,160 test-cmd-util.sh
osh-native 18 14 5 12 5,160 test-cmd-util.sh
osh-cpython 773 728 44 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 32,898,508 2,698 Build.sh
bash 35,958,882 2,698 Build.sh
osh-native 37,366,235 2,698 Build.sh
dash 7,042,147 2,512 abuild
osh-native-souffle 38,711,219 2,512 abuild
bash 43,761,475 2,512 abuild
osh-native 44,967,524 2,512 abuild
dash 53,261,640 20,489 configure
osh-native-souffle 241,434,770 20,489 configure
osh-native 255,014,212 20,489 configure
bash 349,702,388 20,489 configure
dash 151,770,612 69,779 configure-coreutils
osh-native-souffle 782,576,745 69,779 configure-coreutils
bash 886,197,417 69,779 configure-coreutils
osh-native 917,365,008 69,779 configure-coreutils
osh-native-souffle 26,503,003 2,029 configure-helper.sh
osh-native 30,480,269 2,029 configure-helper.sh
bash 47,119,375 2,029 configure-helper.sh
dash 4,652,224 1,733 functions
osh-native-souffle 24,814,004 1,733 functions
bash 28,169,399 1,733 functions
osh-native 28,747,309 1,733 functions
dash 23,597,230 9,661 ltmain.sh
osh-native-souffle 97,273,320 9,661 ltmain.sh
osh-native 112,746,729 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 10,802,355 1,679 t4014-format-patch.sh
osh-native 11,809,467 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 12,666,158 3,123 t9300-fast-import.sh
osh-native 13,870,147 3,123 t9300-fast-import.sh
bash 41,138,083 3,123 t9300-fast-import.sh
osh-native-souffle 97,249,021 5,160 test-cmd-util.sh
osh-native 111,863,658 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-402bad74
dash dash-0ebcf347
osh-cpython osh-b7275a48
osh-native osh-52a37f44
osh-native-souffle osh-native-souffle-99c581a8
host label host id
no-host no-host-556df3ee

Raw Data

filename
no-host.2024-11-02__01-19-38.cachegrind.tsv
no-host.2024-11-02__01-19-38.times.csv