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 118,863 692
osh-native-souffle 118,863 453
osh-native 118,863 374
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 277 253 24 21 2,698 Build.sh
dash 2 2 0 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 8 2,512 abuild
osh-cpython 371 338 32 22 2,512 abuild
dash 9 9 0 2 20,489 configure
bash 32 32 0 3 20,489 configure
osh-native-souffle 42 30 11 20 20,489 configure
osh-native 48 41 7 21 20,489 configure
osh-cpython 1,831 1,815 16 42 20,489 configure
dash 21 21 0 2 69,779 configure-coreutils
bash 78 74 4 3 69,779 configure-coreutils
osh-native-souffle 148 124 24 50 69,779 configure-coreutils
osh-native 188 164 24 46 69,779 configure-coreutils
osh-cpython 5,254 5,177 76 86 69,779 configure-coreutils
bash 6 6 0 3 2,029 configure-helper.sh
osh-native-souffle 7 3 3 8 2,029 configure-helper.sh
osh-native 7 7 0 8 2,029 configure-helper.sh
osh-cpython 271 253 17 21 2,029 configure-helper.sh
dash 2 2 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 7 3 3 8 1,733 functions
osh-cpython 257 224 32 20 1,733 functions
dash 4 4 0 2 9,661 ltmain.sh
bash 17 10 7 4 9,661 ltmain.sh
osh-native-souffle 19 19 0 15 9,661 ltmain.sh
osh-native 23 22 0 15 9,661 ltmain.sh
osh-cpython 848 819 28 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 0 4 7 1,679 t4014-format-patch.sh
osh-native 5 5 0 7 1,679 t4014-format-patch.sh
osh-cpython 101 70 31 18 1,679 t4014-format-patch.sh
dash 1 0 1 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 3 3 3 3,123 t9300-fast-import.sh
osh-cpython 105 92 12 18 3,123 t9300-fast-import.sh
bash 15 15 0 3 5,160 test-cmd-util.sh
osh-native-souffle 16 12 4 12 5,160 test-cmd-util.sh
osh-native 19 11 7 12 5,160 test-cmd-util.sh
osh-cpython 778 765 12 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 32,911,168 2,698 Build.sh
bash 35,958,882 2,698 Build.sh
osh-native 37,381,872 2,698 Build.sh
dash 7,042,147 2,512 abuild
osh-native-souffle 38,725,850 2,512 abuild
bash 43,761,475 2,512 abuild
osh-native 44,981,032 2,512 abuild
dash 53,261,640 20,489 configure
osh-native-souffle 241,438,246 20,489 configure
osh-native 255,025,917 20,489 configure
bash 349,702,388 20,489 configure
dash 151,770,612 69,779 configure-coreutils
osh-native-souffle 782,565,489 69,779 configure-coreutils
bash 886,197,417 69,779 configure-coreutils
osh-native 917,377,382 69,779 configure-coreutils
osh-native-souffle 26,517,689 2,029 configure-helper.sh
osh-native 30,495,665 2,029 configure-helper.sh
bash 47,119,375 2,029 configure-helper.sh
dash 4,652,224 1,733 functions
osh-native-souffle 24,826,750 1,733 functions
bash 28,169,399 1,733 functions
osh-native 28,762,090 1,733 functions
dash 23,597,230 9,661 ltmain.sh
osh-native-souffle 97,287,788 9,661 ltmain.sh
osh-native 112,761,646 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 10,817,762 1,679 t4014-format-patch.sh
osh-native 11,825,236 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 12,681,189 3,123 t9300-fast-import.sh
osh-native 13,885,924 3,123 t9300-fast-import.sh
bash 41,138,083 3,123 t9300-fast-import.sh
osh-native-souffle 97,270,985 5,160 test-cmd-util.sh
osh-native 111,886,871 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-8e8a5986
dash dash-0ebcf347
osh-cpython osh-c79be44e
osh-native osh-da267c39
osh-native-souffle osh-native-souffle-3747034d
host label host id
no-host no-host-556df3ee

Raw Data

filename
no-host.2024-10-25__01-13-33.cachegrind.tsv
no-host.2024-10-25__01-13-33.times.csv