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path: improve normalization performance #28948

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path: improve normalization performance #28948

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mscdex
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@mscdex mscdex commented Aug 3, 2019

Some results:

                                                                                             confidence improvement accuracy (*)   (**)  (***)
path/normalize-posix.js n=10000000 path='.'                                                        ***      8.62 %       ±1.91% ±2.54% ±3.30%
path/normalize-posix.js n=10000000 path=''                                                         ***      8.71 %       ±2.00% ±2.67% ±3.49%
path/normalize-posix.js n=10000000 path='/../'                                                     ***      7.54 %       ±1.97% ±2.64% ±3.46%
path/normalize-posix.js n=10000000 path='/foo'                                                     ***     16.09 %       ±2.77% ±3.71% ±4.88%
path/normalize-posix.js n=10000000 path='/foo/bar'                                                 ***     11.90 %       ±1.86% ±2.47% ±3.22%
path/normalize-posix.js n=10000000 path='/foo/bar//baz/asdf/quux/..'                               ***      9.30 %       ±1.98% ±2.64% ±3.45%
path/normalize-win32.js n=10000000 path='.'                                                        ***      4.80 %       ±1.29% ±1.73% ±2.28%
path/normalize-win32.js n=10000000 path=''                                                         ***      4.49 %       ±0.94% ±1.26% ±1.66%
path/normalize-win32.js n=10000000 path='C:\\\\..\\\\'                                                      1.48 %       ±1.56% ±2.08% ±2.72%
path/normalize-win32.js n=10000000 path='C:\\\\foo'                                                ***      3.33 %       ±1.61% ±2.14% ±2.80%
path/normalize-win32.js n=10000000 path='C:\\\\foo\\\\bar'                                          **      2.26 %       ±1.39% ±1.86% ±2.42%
path/normalize-win32.js n=10000000 path='C:\\\\foo\\\\bar\\\\\\\\baz\\\\asdf\\\\quux\\\\..'                 0.35 %       ±1.28% ±1.71% ±2.24%
Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • commit message follows commit guidelines

@mscdex mscdex added path Issues and PRs related to the path subsystem. performance Issues and PRs related to the performance of Node.js. dont-land-on-v8.x labels Aug 3, 2019
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CI: https://ci.nodejs.org/job/node-test-pull-request/24834/

@mscdex mscdex added wip Issues and PRs that are still a work in progress. and removed wip Issues and PRs that are still a work in progress. labels Aug 3, 2019
lpinca
lpinca reviewed Aug 3, 2019
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ZYSzys commented Aug 5, 2019

Landed in 37d2748.

@ZYSzys ZYSzys closed this Aug 5, 2019
ZYSzys pushed a commit to zys-contrib/node that referenced this pull request Aug 5, 2019
@mscdex
path: improve normalization performance
37d2748 
PR-URL: nodejs#28948
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
@mscdex mscdex deleted the path-perf-normalize branch August 5, 2019 13:02
BridgeAR pushed a commit that referenced this pull request Aug 6, 2019
@mscdex @BridgeAR
path: improve normalization performance
1f82929 
PR-URL: #28948
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
@BridgeAR BridgeAR mentioned this pull request Aug 6, 2019
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@ZYSzys ZYSzys ZYSzys approved these changes

@trivikr trivikr trivikr approved these changes

@devsnek devsnek devsnek approved these changes

@cjihrig cjihrig cjihrig approved these changes

@lpinca lpinca lpinca approved these changes

@addaleax addaleax addaleax approved these changes

@Trott Trott Trott approved these changes

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@mscdex @nodejs-github-bot @ZYSzys @Trott @addaleax @lpinca @cjihrig @devsnek @trivikr