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 2,652
bash 118,863 698
osh-native-souffle 118,863 493
osh-native 118,863 446
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 7 0 8 2,698 Build.sh
osh-native 8 8 0 8 2,698 Build.sh
osh-cpython 275 258 16 21 2,698 Build.sh
dash 2 2 0 1 2,512 abuild
bash 5 5 0 3 2,512 abuild
osh-native-souffle 8 4 4 8 2,512 abuild
osh-native 9 9 0 9 2,512 abuild
osh-cpython 370 342 28 21 2,512 abuild
dash 8 8 0 2 20,489 configure
bash 32 32 0 3 20,489 configure
osh-native-souffle 39 27 12 21 20,489 configure
osh-native 43 35 8 21 20,489 configure
osh-cpython 1,806 1,778 28 42 20,489 configure
dash 22 22 0 2 69,779 configure-coreutils
bash 77 77 0 3 69,779 configure-coreutils
osh-native-souffle 132 116 16 50 69,779 configure-coreutils
osh-native 149 117 32 46 69,779 configure-coreutils
osh-cpython 5,165 5,084 80 86 69,779 configure-coreutils
bash 5 5 0 3 2,029 configure-helper.sh
osh-native-souffle 6 0 6 8 2,029 configure-helper.sh
osh-native 7 7 0 8 2,029 configure-helper.sh
osh-cpython 263 235 28 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 7 1,733 functions
osh-native 7 7 0 8 1,733 functions
osh-cpython 255 227 28 20 1,733 functions
dash 4 0 4 2 9,661 ltmain.sh
bash 17 10 7 4 9,661 ltmain.sh
osh-native-souffle 18 18 0 15 9,661 ltmain.sh
osh-native 20 16 4 15 9,661 ltmain.sh
osh-cpython 821 788 33 28 9,661 ltmain.sh
dash 1 0 1 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 0 4 7 1,679 t4014-format-patch.sh
osh-cpython 93 77 15 18 1,679 t4014-format-patch.sh
dash 1 0 1 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 7 3,123 t9300-fast-import.sh
bash 5 2 2 3 3,123 t9300-fast-import.sh
osh-cpython 101 77 24 19 3,123 t9300-fast-import.sh
bash 16 8 8 3 5,160 test-cmd-util.sh
osh-native-souffle 16 16 0 12 5,160 test-cmd-util.sh
osh-native 17 9 9 12 5,160 test-cmd-util.sh
osh-cpython 753 721 32 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 32,911,540 2,698 Build.sh
bash 35,958,882 2,698 Build.sh
osh-native 37,382,358 2,698 Build.sh
dash 7,042,147 2,512 abuild
osh-native-souffle 38,726,222 2,512 abuild
bash 43,761,475 2,512 abuild
osh-native 44,981,518 2,512 abuild
dash 53,261,640 20,489 configure
osh-native-souffle 241,438,763 20,489 configure
osh-native 255,026,579 20,489 configure
bash 349,702,388 20,489 configure
dash 151,770,612 69,779 configure-coreutils
osh-native-souffle 782,566,151 69,779 configure-coreutils
bash 886,197,417 69,779 configure-coreutils
osh-native 917,378,218 69,779 configure-coreutils
osh-native-souffle 26,518,032 2,029 configure-helper.sh
osh-native 30,496,122 2,029 configure-helper.sh
bash 47,119,375 2,029 configure-helper.sh
dash 4,652,224 1,733 functions
osh-native-souffle 24,827,093 1,733 functions
bash 28,169,399 1,733 functions
osh-native 28,762,547 1,733 functions
dash 23,597,230 9,661 ltmain.sh
osh-native-souffle 97,288,225 9,661 ltmain.sh
osh-native 112,762,559 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 10,818,088 1,679 t4014-format-patch.sh
osh-native 11,825,787 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 12,681,503 3,123 t9300-fast-import.sh
osh-native 13,886,352 3,123 t9300-fast-import.sh
bash 41,138,083 3,123 t9300-fast-import.sh
osh-native-souffle 97,272,954 5,160 test-cmd-util.sh
osh-native 111,887,568 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-9e3ab45a
dash dash-0ebcf347
osh-cpython osh-679c1527
osh-native osh-c9f6286d
osh-native-souffle osh-native-souffle-04d79e11
host label host id
no-host no-host-556df3ee

Raw Data

filename
no-host.2024-10-29__04-12-21.cachegrind.tsv
no-host.2024-10-29__04-12-21.times.csv