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 13.3
osh-native-souffle 118,863 11.6

(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 2,672
bash 118,863 696
osh-native-souffle 118,863 438
osh-native 118,863 413
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 279 270 8 21 2,698 Build.sh
dash 2 2 0 1 2,512 abuild
bash 6 3 3 3 2,512 abuild
osh-native 9 9 0 9 2,512 abuild
osh-native-souffle 9 9 0 8 2,512 abuild
osh-cpython 369 348 20 21 2,512 abuild
dash 9 9 0 2 20,489 configure
bash 33 28 4 4 20,489 configure
osh-native-souffle 42 27 15 20 20,489 configure
osh-native 44 33 11 21 20,489 configure
osh-cpython 1,823 1,781 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 155 131 24 46 69,779 configure-coreutils
osh-native 165 141 24 52 69,779 configure-coreutils
osh-cpython 5,376 5,303 72 86 69,779 configure-coreutils
bash 6 6 0 3 2,029 configure-helper.sh
osh-native-souffle 6 6 0 8 2,029 configure-helper.sh
osh-native 7 7 0 8 2,029 configure-helper.sh
osh-cpython 261 248 12 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 6 0 7 1,733 functions
osh-native 6 6 0 8 1,733 functions
osh-cpython 251 226 24 20 1,733 functions
dash 4 4 0 2 9,661 ltmain.sh
bash 17 8 8 4 9,661 ltmain.sh
osh-native-souffle 20 20 0 15 9,661 ltmain.sh
osh-native 21 16 4 15 9,661 ltmain.sh
osh-cpython 836 804 32 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-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 96 76 20 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 4 0 7 3,123 t9300-fast-import.sh
bash 5 5 0 3 3,123 t9300-fast-import.sh
osh-cpython 103 79 23 18 3,123 t9300-fast-import.sh
bash 15 11 4 3 5,160 test-cmd-util.sh
osh-native-souffle 17 17 0 12 5,160 test-cmd-util.sh
osh-native 18 7 11 12 5,160 test-cmd-util.sh
osh-cpython 772 744 28 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 33,368,054 2,698 Build.sh
bash 35,958,882 2,698 Build.sh
osh-native 37,900,806 2,698 Build.sh
dash 7,042,147 2,512 abuild
osh-native-souffle 39,405,564 2,512 abuild
bash 43,761,475 2,512 abuild
osh-native 45,781,449 2,512 abuild
dash 53,261,640 20,489 configure
osh-native-souffle 244,785,062 20,489 configure
osh-native 279,072,574 20,489 configure
bash 349,702,388 20,489 configure
dash 151,770,612 69,779 configure-coreutils
osh-native-souffle 783,733,780 69,779 configure-coreutils
bash 886,197,417 69,779 configure-coreutils
osh-native 904,178,737 69,779 configure-coreutils
osh-native-souffle 26,921,358 2,029 configure-helper.sh
osh-native 30,984,108 2,029 configure-helper.sh
bash 47,119,375 2,029 configure-helper.sh
dash 4,652,224 1,733 functions
osh-native-souffle 25,242,579 1,733 functions
bash 28,169,399 1,733 functions
osh-native 29,251,004 1,733 functions
dash 23,597,230 9,661 ltmain.sh
osh-native-souffle 98,831,651 9,661 ltmain.sh
osh-native 114,595,018 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 10,901,182 1,679 t4014-format-patch.sh
osh-native 11,926,574 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 12,801,269 3,123 t9300-fast-import.sh
osh-native 14,033,240 3,123 t9300-fast-import.sh
bash 41,138,083 3,123 t9300-fast-import.sh
osh-native-souffle 98,907,761 5,160 test-cmd-util.sh
osh-native 113,821,586 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-d0566469
dash dash-0ebcf347
osh-cpython osh-4b4d09f3
osh-native osh-e41da33d
osh-native-souffle osh-native-souffle-d627d526
host label host id
no-host no-host-556df3ee

Raw Data

filename
no-host.2024-10-15__01-49-11.cachegrind.tsv
no-host.2024-10-15__01-49-11.times.csv