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 2,593
bash 118,863 704
osh-native-souffle 118,863 486
osh-native 118,863 435
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 5 0 3 2,698 Build.sh
osh-native-souffle 7 7 0 8 2,698 Build.sh
osh-native 8 8 0 8 2,698 Build.sh
osh-cpython 269 253 16 21 2,698 Build.sh
dash 2 2 0 1 2,512 abuild
bash 5 3 3 3 2,512 abuild
osh-native-souffle 8 4 4 8 2,512 abuild
osh-native 9 9 0 8 2,512 abuild
osh-cpython 370 353 16 22 2,512 abuild
dash 8 8 0 2 20,489 configure
bash 32 28 4 3 20,489 configure
osh-native-souffle 39 31 8 21 20,489 configure
osh-native 43 35 8 21 20,489 configure
osh-cpython 1,793 1,749 44 42 20,489 configure
dash 23 19 4 2 69,779 configure-coreutils
bash 78 74 4 3 69,779 configure-coreutils
osh-native-souffle 135 118 16 50 69,779 configure-coreutils
osh-native 153 133 20 46 69,779 configure-coreutils
osh-cpython 5,212 5,104 108 86 69,779 configure-coreutils
bash 5 3 3 3 2,029 configure-helper.sh
osh-native-souffle 6 3 3 8 2,029 configure-helper.sh
osh-native 7 0 7 8 2,029 configure-helper.sh
osh-cpython 268 243 24 21 2,029 configure-helper.sh
dash 1 1 0 1 1,733 functions
bash 4 0 4 3 1,733 functions
osh-native-souffle 6 3 3 8 1,733 functions
osh-native 6 6 0 8 1,733 functions
osh-cpython 248 220 28 20 1,733 functions
dash 4 0 4 2 9,661 ltmain.sh
bash 17 13 3 4 9,661 ltmain.sh
osh-native-souffle 19 15 4 15 9,661 ltmain.sh
osh-native 20 20 0 15 9,661 ltmain.sh
osh-cpython 844 815 28 28 9,661 ltmain.sh
dash 1 1 0 1 1,679 t4014-format-patch.sh
bash 3 3 0 3 1,679 t4014-format-patch.sh
osh-native-souffle 4 4 0 7 1,679 t4014-format-patch.sh
osh-native 5 5 0 7 1,679 t4014-format-patch.sh
osh-cpython 95 79 16 18 1,679 t4014-format-patch.sh
dash 1 1 0 1 3,123 t9300-fast-import.sh
osh-native 4 4 0 7 3,123 t9300-fast-import.sh
osh-native-souffle 4 0 4 7 3,123 t9300-fast-import.sh
bash 5 5 0 3 3,123 t9300-fast-import.sh
osh-cpython 102 85 16 18 3,123 t9300-fast-import.sh
bash 15 15 0 3 5,160 test-cmd-util.sh
osh-native-souffle 17 7 10 12 5,160 test-cmd-util.sh
osh-native 18 18 0 12 5,160 test-cmd-util.sh
osh-cpython 746 725 21 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 32,898,598 2,698 Build.sh
bash 35,958,882 2,698 Build.sh
osh-native 37,366,409 2,698 Build.sh
dash 7,042,147 2,512 abuild
osh-native-souffle 38,711,309 2,512 abuild
bash 43,761,475 2,512 abuild
osh-native 44,967,698 2,512 abuild
dash 53,261,640 20,489 configure
osh-native-souffle 241,436,728 20,489 configure
osh-native 255,014,416 20,489 configure
bash 349,702,388 20,489 configure
dash 151,770,612 69,779 configure-coreutils
osh-native-souffle 782,576,834 69,779 configure-coreutils
bash 886,197,417 69,779 configure-coreutils
osh-native 917,365,212 69,779 configure-coreutils
osh-native-souffle 26,503,093 2,029 configure-helper.sh
osh-native 30,480,413 2,029 configure-helper.sh
bash 47,119,375 2,029 configure-helper.sh
dash 4,652,224 1,733 functions
osh-native-souffle 24,814,094 1,733 functions
bash 28,169,399 1,733 functions
osh-native 28,747,453 1,733 functions
dash 23,597,230 9,661 ltmain.sh
osh-native-souffle 97,273,361 9,661 ltmain.sh
osh-native 112,747,143 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 10,802,429 1,679 t4014-format-patch.sh
osh-native 11,809,681 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 12,666,248 3,123 t9300-fast-import.sh
osh-native 13,870,321 3,123 t9300-fast-import.sh
bash 41,138,083 3,123 t9300-fast-import.sh
osh-native-souffle 97,249,094 5,160 test-cmd-util.sh
osh-native 111,864,012 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-28b80b26
dash dash-0ebcf347
osh-cpython osh-32339107
osh-native osh-f80d61dd
osh-native-souffle osh-native-souffle-7b2a0f3d
host label host id
no-host no-host-556df3ee

Raw Data

filename
no-host.2024-11-03__00-33-25.cachegrind.tsv
no-host.2024-11-03__00-33-25.times.csv