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 2,674
bash 118,863 703
osh-native-souffle 118,863 474
osh-native 118,863 403
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 270 238 32 21 2,698 Build.sh
dash 2 2 0 1 2,512 abuild
bash 6 3 3 3 2,512 abuild
osh-native-souffle 8 0 8 8 2,512 abuild
osh-native 9 4 4 9 2,512 abuild
osh-cpython 361 333 28 22 2,512 abuild
dash 8 8 0 2 20,489 configure
bash 32 28 4 3 20,489 configure
osh-native-souffle 40 24 16 20 20,489 configure
osh-native 44 36 8 21 20,489 configure
osh-cpython 1,779 1,742 37 42 20,489 configure
dash 21 21 0 1 69,779 configure-coreutils
bash 77 77 0 3 69,779 configure-coreutils
osh-native-souffle 140 108 32 50 69,779 configure-coreutils
osh-native 175 147 28 46 69,779 configure-coreutils
osh-cpython 5,256 5,183 72 86 69,779 configure-coreutils
bash 5 6 0 3 2,029 configure-helper.sh
osh-native-souffle 6 6 0 8 2,029 configure-helper.sh
osh-native 7 0 7 8 2,029 configure-helper.sh
osh-cpython 259 251 8 21 2,029 configure-helper.sh
dash 1 1 0 1 1,733 functions
bash 4 4 0 3 1,733 functions
osh-native-souffle 6 3 3 8 1,733 functions
osh-native 6 0 6 8 1,733 functions
osh-cpython 254 238 16 20 1,733 functions
dash 4 2 2 2 9,661 ltmain.sh
bash 17 13 4 4 9,661 ltmain.sh
osh-native-souffle 19 15 4 15 9,661 ltmain.sh
osh-native 20 16 4 15 9,661 ltmain.sh
osh-cpython 845 825 20 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 4 4 0 7 1,679 t4014-format-patch.sh
osh-native-souffle 4 0 4 7 1,679 t4014-format-patch.sh
osh-cpython 95 73 21 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 5 0 3 3,123 t9300-fast-import.sh
osh-cpython 103 77 25 19 3,123 t9300-fast-import.sh
bash 15 11 4 3 5,160 test-cmd-util.sh
osh-native-souffle 16 12 4 11 5,160 test-cmd-util.sh
osh-native 18 15 4 12 5,160 test-cmd-util.sh
osh-cpython 767 742 24 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 32,912,441 2,698 Build.sh
bash 35,958,882 2,698 Build.sh
osh-native 37,382,759 2,698 Build.sh
dash 7,042,147 2,512 abuild
osh-native-souffle 38,726,972 2,512 abuild
bash 43,761,475 2,512 abuild
osh-native 44,982,122 2,512 abuild
dash 53,261,640 20,489 configure
osh-native-souffle 241,441,079 20,489 configure
osh-native 255,026,873 20,489 configure
bash 349,702,388 20,489 configure
dash 151,770,612 69,779 configure-coreutils
osh-native-souffle 782,570,646 69,779 configure-coreutils
bash 886,197,417 69,779 configure-coreutils
osh-native 917,378,824 69,779 configure-coreutils
osh-native-souffle 26,518,393 2,029 configure-helper.sh
osh-native 30,496,510 2,029 configure-helper.sh
bash 47,119,375 2,029 configure-helper.sh
dash 4,652,224 1,733 functions
osh-native-souffle 24,827,850 1,733 functions
bash 28,169,399 1,733 functions
osh-native 28,762,849 1,733 functions
dash 23,597,230 9,661 ltmain.sh
osh-native-souffle 97,289,809 9,661 ltmain.sh
osh-native 112,762,650 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 10,818,338 1,679 t4014-format-patch.sh
osh-native 11,826,356 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 12,682,193 3,123 t9300-fast-import.sh
osh-native 13,886,867 3,123 t9300-fast-import.sh
bash 41,138,083 3,123 t9300-fast-import.sh
osh-native-souffle 97,273,252 5,160 test-cmd-util.sh
osh-native 111,887,566 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-8f0593a1
dash dash-0ebcf347
osh-cpython osh-c731274f
osh-native osh-12b7a1e2
osh-native-souffle osh-native-souffle-e0366c4e
host label host id
no-host no-host-556df3ee

Raw Data

filename
no-host.2024-10-30__20-30-52.cachegrind.tsv
no-host.2024-10-30__20-30-52.times.csv