index.md

ShellJS Benchmarks

Collection of benchmarks for ShellJS

This is a comparison of ShellJS and bash for performance. Each test case runs scripts with equivalent output and compares Bash's runtime with ShellJS's. Surprisingly, ShellJS is often the winner, sometimes being up to 12x faster! Woohoo! See below for ShellJS performance wins.

Results

ShellJS performance wins

• echoIntoFile
• ls10k
• touchSyntax0.6

System Information:

• Linux

• 4.2.0-30-generic

• x64

• Intel(R) Core(TM) i5-3317U CPU @ 1.70GHz × 4

Node information

• Node.js: v5.3.0

• V8: 4.6.85.31

Shell Information:

• name: /bin/bash

• version: GNU bash, version 4.3.42(1)-release (x86_64-pc-linux-gnu) Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html This is free software; you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

echoIntoFile

• Bash took 780 milliseconds

• ShellJS 0.5.3 took 284 milliseconds

• ShellJS 0.6.0 took 270 milliseconds

• ShellJS latest took 174 milliseconds

ShellJS was 4.483 times faster than Bash

envVariable

• Bash took 223 milliseconds

• ShellJS 0.5.3 took 409 milliseconds

• ShellJS 0.6.0 took 295 milliseconds

• ShellJS latest took 823 milliseconds

Bash was 3.691 times faster than ShellJS

forLoopAlternateSyntax

• Bash took 98 milliseconds

• ShellJS 0.5.3 took 176 milliseconds

• ShellJS 0.6.0 took 184 milliseconds

• ShellJS latest took 223 milliseconds

Bash was 2.276 times faster than ShellJS

helloworld

• Bash took 85 milliseconds

• ShellJS 0.5.3 took 171 milliseconds

• ShellJS 0.6.0 took 187 milliseconds

• ShellJS latest took 183 milliseconds

Bash was 2.153 times faster than ShellJS

helloworld10k

• Bash took 163 milliseconds

• ShellJS 0.5.3 took 261 milliseconds

• ShellJS 0.6.0 took 284 milliseconds

• ShellJS latest took 788 milliseconds

Bash was 4.834 times faster than ShellJS

ls10k

• Bash took 10345 milliseconds

• ShellJS 0.5.3 took 684 milliseconds

• ShellJS 0.6.0 took 908 milliseconds

• ShellJS latest took 1107 milliseconds

ShellJS was 9.345 times faster than Bash

pwd10k

• Bash took 917 milliseconds

• ShellJS 0.5.3 took 1312 milliseconds

• ShellJS 0.6.0 took 1911 milliseconds

• ShellJS latest took 4158 milliseconds

Bash was 4.534 times faster than ShellJS

touchSyntax0.6

• Bash took 1486 milliseconds

• Skipping test for ShellJS 0.5.3

• ShellJS 0.6.0 took 307 milliseconds

• ShellJS latest took 468 milliseconds

ShellJS was 3.175 times faster than Bash