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 2,680
bash 118,863 697
osh-native-souffle 118,863 455
osh-native 118,863 412
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 0 5 3 2,698 Build.sh
osh-native-souffle 7 4 4 8 2,698 Build.sh
osh-native 8 8 0 8 2,698 Build.sh
osh-cpython 269 240 28 21 2,698 Build.sh
dash 2 0 2 1 2,512 abuild
bash 6 6 0 3 2,512 abuild
osh-native-souffle 8 8 0 8 2,512 abuild
osh-native 9 9 0 9 2,512 abuild
osh-cpython 359 339 20 21 2,512 abuild
dash 8 8 0 2 20,489 configure
bash 32 24 8 4 20,489 configure
osh-native-souffle 42 29 12 20 20,489 configure
osh-native 47 42 4 21 20,489 configure
osh-cpython 1,786 1,744 41 42 20,489 configure
dash 21 21 0 2 69,779 configure-coreutils
bash 78 77 0 3 69,779 configure-coreutils
osh-native-souffle 148 132 16 50 69,779 configure-coreutils
osh-native 164 152 12 46 69,779 configure-coreutils
osh-cpython 5,163 5,082 80 86 69,779 configure-coreutils
bash 6 3 3 3 2,029 configure-helper.sh
osh-native-souffle 6 3 3 8 2,029 configure-helper.sh
osh-native 7 7 0 8 2,029 configure-helper.sh
osh-cpython 263 238 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 6 0 8 1,733 functions
osh-native 7 3 3 8 1,733 functions
osh-cpython 252 228 24 20 1,733 functions
dash 4 0 4 2 9,661 ltmain.sh
bash 17 17 0 4 9,661 ltmain.sh
osh-native-souffle 19 15 4 15 9,661 ltmain.sh
osh-native 20 12 8 15 9,661 ltmain.sh
osh-cpython 832 808 24 28 9,661 ltmain.sh
dash 1 1 0 1 1,679 t4014-format-patch.sh
bash 3 0 3 3 1,679 t4014-format-patch.sh
osh-native-souffle 4 4 0 7 1,679 t4014-format-patch.sh
osh-native 4 4 0 7 1,679 t4014-format-patch.sh
osh-cpython 96 80 16 18 1,679 t4014-format-patch.sh
dash 1 1 0 1 3,123 t9300-fast-import.sh
osh-native-souffle 4 4 0 7 3,123 t9300-fast-import.sh
osh-native 4 4 0 8 3,123 t9300-fast-import.sh
bash 5 2 2 3 3,123 t9300-fast-import.sh
osh-cpython 102 78 23 19 3,123 t9300-fast-import.sh
bash 16 16 0 3 5,160 test-cmd-util.sh
osh-native-souffle 17 12 4 12 5,160 test-cmd-util.sh
osh-native 18 14 4 12 5,160 test-cmd-util.sh
osh-cpython 764 735 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 32,909,799 2,698 Build.sh
bash 35,958,882 2,698 Build.sh
osh-native 37,379,928 2,698 Build.sh
dash 7,042,147 2,512 abuild
osh-native-souffle 38,724,726 2,512 abuild
bash 43,761,475 2,512 abuild
osh-native 44,979,288 2,512 abuild
dash 53,261,640 20,489 configure
osh-native-souffle 241,436,730 20,489 configure
osh-native 255,021,536 20,489 configure
bash 349,702,388 20,489 configure
dash 151,770,612 69,779 configure-coreutils
osh-native-souffle 782,557,733 69,779 configure-coreutils
bash 886,197,417 69,779 configure-coreutils
osh-native 917,372,794 69,779 configure-coreutils
osh-native-souffle 26,517,003 2,029 configure-helper.sh
osh-native 30,494,379 2,029 configure-helper.sh
bash 47,119,375 2,029 configure-helper.sh
dash 4,652,224 1,733 functions
osh-native-souffle 24,826,012 1,733 functions
bash 28,169,399 1,733 functions
osh-native 28,760,776 1,733 functions
dash 23,597,230 9,661 ltmain.sh
osh-native-souffle 97,286,153 9,661 ltmain.sh
osh-native 112,759,199 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 10,817,210 1,679 t4014-format-patch.sh
osh-native 11,824,017 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 12,680,632 3,123 t9300-fast-import.sh
osh-native 13,884,803 3,123 t9300-fast-import.sh
bash 41,138,083 3,123 t9300-fast-import.sh
osh-native-souffle 97,268,958 5,160 test-cmd-util.sh
osh-native 111,884,437 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-feee78a8
dash dash-0ebcf347
osh-cpython osh-f1926e79
osh-native osh-2d3c1c2e
osh-native-souffle osh-native-souffle-b6c85353
host label host id
no-host no-host-556df3ee

Raw Data

filename
no-host.2024-10-23__15-42-11.cachegrind.tsv
no-host.2024-10-23__15-42-11.times.csv