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 2,692
bash 118,863 688
osh-native-souffle 118,863 439
osh-native 118,863 383
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 4 4 8 2,698 Build.sh
osh-native 8 4 4 8 2,698 Build.sh
osh-cpython 278 250 28 22 2,698 Build.sh
dash 2 2 0 1 2,512 abuild
bash 5 5 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 373 341 32 23 2,512 abuild
dash 9 6 3 2 20,489 configure
bash 32 32 0 4 20,489 configure
osh-native-souffle 43 32 12 21 20,489 configure
osh-native 48 32 16 21 20,489 configure
osh-cpython 1,773 1,741 32 43 20,489 configure
dash 21 21 0 2 69,779 configure-coreutils
bash 77 77 0 3 69,779 configure-coreutils
osh-native-souffle 154 138 16 50 69,779 configure-coreutils
osh-native 182 157 24 46 69,779 configure-coreutils
osh-cpython 5,340 5,243 96 87 69,779 configure-coreutils
bash 5 3 3 3 2,029 configure-helper.sh
osh-native-souffle 7 7 0 8 2,029 configure-helper.sh
osh-native 7 3 3 8 2,029 configure-helper.sh
osh-cpython 266 246 20 22 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 7 1,733 functions
osh-native 7 0 7 8 1,733 functions
osh-cpython 252 239 12 22 1,733 functions
dash 4 2 2 2 9,661 ltmain.sh
osh-native-souffle 19 12 8 15 9,661 ltmain.sh
bash 21 21 0 4 9,661 ltmain.sh
osh-native 22 22 0 15 9,661 ltmain.sh
osh-cpython 835 810 24 30 9,661 ltmain.sh
dash 1 1 0 1 1,679 t4014-format-patch.sh
bash 4 0 4 3 1,679 t4014-format-patch.sh
osh-native-souffle 4 0 4 7 1,679 t4014-format-patch.sh
osh-native 4 0 4 7 1,679 t4014-format-patch.sh
osh-cpython 106 89 16 20 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 5 4 0 7 3,123 t9300-fast-import.sh
bash 5 5 0 3 3,123 t9300-fast-import.sh
osh-cpython 109 93 15 20 3,123 t9300-fast-import.sh
bash 15 15 0 3 5,160 test-cmd-util.sh
osh-native-souffle 17 10 7 12 5,160 test-cmd-util.sh
osh-native 19 15 4 12 5,160 test-cmd-util.sh
osh-cpython 756 727 28 28 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 32,905,842 2,698 Build.sh
bash 35,958,882 2,698 Build.sh
osh-native 37,373,696 2,698 Build.sh
dash 7,042,147 2,512 abuild
osh-native-souffle 38,717,972 2,512 abuild
bash 43,761,475 2,512 abuild
osh-native 44,975,037 2,512 abuild
dash 53,261,640 20,489 configure
osh-native-souffle 241,448,315 20,489 configure
osh-native 255,025,942 20,489 configure
bash 349,702,388 20,489 configure
dash 151,770,612 69,779 configure-coreutils
osh-native-souffle 782,609,242 69,779 configure-coreutils
bash 886,197,417 69,779 configure-coreutils
osh-native 917,386,324 69,779 configure-coreutils
osh-native-souffle 26,509,238 2,029 configure-helper.sh
osh-native 30,486,587 2,029 configure-helper.sh
bash 47,119,375 2,029 configure-helper.sh
dash 4,652,224 1,733 functions
osh-native-souffle 24,820,254 1,733 functions
bash 28,169,399 1,733 functions
osh-native 28,753,646 1,733 functions
dash 23,597,230 9,661 ltmain.sh
osh-native-souffle 97,290,594 9,661 ltmain.sh
osh-native 112,756,230 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 10,807,511 1,679 t4014-format-patch.sh
osh-native 11,815,059 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 12,671,203 3,123 t9300-fast-import.sh
osh-native 13,875,269 3,123 t9300-fast-import.sh
bash 41,138,083 3,123 t9300-fast-import.sh
osh-native-souffle 97,259,647 5,160 test-cmd-util.sh
osh-native 111,874,025 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-2231c867
dash dash-0ebcf347
osh-cpython osh-98527937
osh-native osh-543b4e83
osh-native-souffle osh-native-souffle-75cb32f2
host label host id
no-host no-host-556df3ee

Raw Data

filename
no-host.2024-11-20__04-36-45.cachegrind.tsv
no-host.2024-11-20__04-36-45.times.csv