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 11.8

(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 2,707
bash 118,863 703
osh-native-souffle 118,863 468
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 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 268 256 12 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 8 0 8 2,512 abuild
osh-native 9 9 0 8 2,512 abuild
osh-cpython 360 340 20 21 2,512 abuild
dash 8 8 0 2 20,489 configure
bash 32 28 4 3 20,489 configure
osh-native-souffle 40 36 4 21 20,489 configure
osh-native 43 31 12 21 20,489 configure
osh-cpython 1,767 1,734 32 42 20,489 configure
dash 21 18 4 2 69,779 configure-coreutils
bash 78 74 4 3 69,779 configure-coreutils
osh-native-souffle 143 119 24 51 69,779 configure-coreutils
osh-native 148 128 20 51 69,779 configure-coreutils
osh-cpython 5,110 5,065 44 86 69,779 configure-coreutils
bash 5 5 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 257 232 24 21 2,029 configure-helper.sh
dash 1 0 1 1 1,733 functions
bash 4 0 4 3 1,733 functions
osh-native-souffle 6 6 0 8 1,733 functions
osh-native 7 7 0 8 1,733 functions
osh-cpython 252 224 28 20 1,733 functions
dash 4 4 0 2 9,661 ltmain.sh
bash 17 12 4 4 9,661 ltmain.sh
osh-native-souffle 18 14 5 15 9,661 ltmain.sh
osh-native 20 16 4 15 9,661 ltmain.sh
osh-cpython 827 799 28 28 9,661 ltmain.sh
dash 1 0 1 1 1,679 t4014-format-patch.sh
bash 4 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 92 68 24 18 1,679 t4014-format-patch.sh
dash 1 1 0 1 3,123 t9300-fast-import.sh
osh-native 4 0 4 7 3,123 t9300-fast-import.sh
osh-native-souffle 4 0 4 7 3,123 t9300-fast-import.sh
bash 5 5 0 3 3,123 t9300-fast-import.sh
osh-cpython 98 67 31 18 3,123 t9300-fast-import.sh
bash 15 11 4 3 5,160 test-cmd-util.sh
osh-native-souffle 17 16 0 12 5,160 test-cmd-util.sh
osh-native 18 11 7 12 5,160 test-cmd-util.sh
osh-cpython 738 718 20 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 33,379,190 2,698 Build.sh
bash 35,958,882 2,698 Build.sh
osh-native 37,916,118 2,698 Build.sh
dash 7,042,147 2,512 abuild
osh-native-souffle 39,418,418 2,512 abuild
bash 43,761,475 2,512 abuild
osh-native 45,790,228 2,512 abuild
dash 53,261,640 20,489 configure
osh-native-souffle 244,833,031 20,489 configure
osh-native 279,177,219 20,489 configure
bash 349,702,388 20,489 configure
dash 151,770,612 69,779 configure-coreutils
osh-native-souffle 807,264,198 69,779 configure-coreutils
bash 886,197,417 69,779 configure-coreutils
osh-native 889,955,554 69,779 configure-coreutils
osh-native-souffle 26,929,637 2,029 configure-helper.sh
osh-native 30,993,876 2,029 configure-helper.sh
bash 47,119,375 2,029 configure-helper.sh
dash 4,652,224 1,733 functions
osh-native-souffle 25,252,460 1,733 functions
bash 28,169,399 1,733 functions
osh-native 29,260,465 1,733 functions
dash 23,597,230 9,661 ltmain.sh
osh-native-souffle 98,849,327 9,661 ltmain.sh
osh-native 114,624,820 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 10,906,140 1,679 t4014-format-patch.sh
osh-native 11,931,563 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 12,804,792 3,123 t9300-fast-import.sh
osh-native 14,035,888 3,123 t9300-fast-import.sh
bash 41,138,083 3,123 t9300-fast-import.sh
osh-native-souffle 98,937,409 5,160 test-cmd-util.sh
osh-native 113,851,989 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-8e3a1b68
dash dash-0ebcf347
osh-cpython osh-664ac014
osh-native osh-75070764
osh-native-souffle osh-native-souffle-af44357d
host label host id
no-host no-host-556df3ee

Raw Data

filename
no-host.2024-10-18__23-44-46.cachegrind.tsv
no-host.2024-10-18__23-44-46.times.csv