oilshell.org
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 |
(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 |
2,745 |
| bash |
118,863 |
690 |
| 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 |
1 |
2 |
0 |
1 |
2,698 |
Build.sh |
| bash |
5 |
5 |
0 |
3 |
2,698 |
Build.sh |
| osh-cpython |
277 |
250 |
27 |
20 |
2,698 |
Build.sh |
| dash |
2 |
1 |
1 |
1 |
2,512 |
abuild |
| bash |
6 |
5 |
1 |
3 |
2,512 |
abuild |
| osh-cpython |
365 |
345 |
21 |
21 |
2,512 |
abuild |
| dash |
9 |
8 |
1 |
2 |
20,489 |
configure |
| bash |
33 |
33 |
0 |
3 |
20,489 |
configure |
| osh-cpython |
1,820 |
1,786 |
34 |
42 |
20,489 |
configure |
| dash |
21 |
19 |
2 |
2 |
69,779 |
configure-coreutils |
| bash |
79 |
78 |
1 |
3 |
69,779 |
configure-coreutils |
| osh-cpython |
5,330 |
5,252 |
77 |
86 |
69,779 |
configure-coreutils |
| bash |
5 |
4 |
1 |
3 |
2,029 |
configure-helper.sh |
| osh-cpython |
263 |
236 |
28 |
20 |
2,029 |
configure-helper.sh |
| dash |
1 |
1 |
0 |
1 |
1,733 |
functions |
| bash |
4 |
3 |
1 |
3 |
1,733 |
functions |
| osh-cpython |
259 |
235 |
24 |
20 |
1,733 |
functions |
| dash |
4 |
4 |
0 |
2 |
9,661 |
ltmain.sh |
| bash |
17 |
16 |
1 |
4 |
9,661 |
ltmain.sh |
| osh-cpython |
863 |
828 |
36 |
28 |
9,661 |
ltmain.sh |
| dash |
1 |
1 |
0 |
1 |
1,679 |
t4014-format-patch.sh |
| bash |
3 |
2 |
2 |
3 |
1,679 |
t4014-format-patch.sh |
| osh-cpython |
95 |
79 |
16 |
18 |
1,679 |
t4014-format-patch.sh |
| dash |
1 |
0 |
1 |
1 |
3,123 |
t9300-fast-import.sh |
| bash |
5 |
3 |
2 |
3 |
3,123 |
t9300-fast-import.sh |
| osh-cpython |
100 |
79 |
21 |
18 |
3,123 |
t9300-fast-import.sh |
| bash |
16 |
15 |
1 |
3 |
5,160 |
test-cmd-util.sh |
| osh-cpython |
775 |
744 |
31 |
26 |
5,160 |
test-cmd-util.sh |
Instruction Counts
| shell label |
irefs |
num lines |
filename |
| dash |
6,416,010 |
2,698 |
Build.sh |
| bash |
35,958,882 |
2,698 |
Build.sh |
| dash |
7,042,147 |
2,512 |
abuild |
| bash |
43,761,475 |
2,512 |
abuild |
| dash |
53,261,640 |
20,489 |
configure |
| bash |
349,702,388 |
20,489 |
configure |
| dash |
151,770,612 |
69,779 |
configure-coreutils |
| bash |
886,197,417 |
69,779 |
configure-coreutils |
| bash |
47,119,375 |
2,029 |
configure-helper.sh |
| dash |
4,652,224 |
1,733 |
functions |
| bash |
28,169,399 |
1,733 |
functions |
| dash |
23,597,230 |
9,661 |
ltmain.sh |
| bash |
172,930,991 |
9,661 |
ltmain.sh |
| dash |
3,166,564 |
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 |
| bash |
41,138,083 |
3,123 |
t9300-fast-import.sh |
| bash |
161,950,200 |
5,160 |
test-cmd-util.sh |
Shell and Host Details
Raw Data