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events: improve once() performance #29307

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events: improve once() performance #29307

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mscdex
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@mscdex mscdex commented Aug 25, 2019

Results:

                                      confidence improvement accuracy (*)   (**)  (***)
 events/ee-once.js argc=0 n=20000000        ***     15.46 %       ±3.02% ±4.02% ±5.24%
 events/ee-once.js argc=1 n=20000000        ***     10.71 %       ±3.48% ±4.64% ±6.05%
 events/ee-once.js argc=4 n=20000000        ***     13.51 %       ±2.84% ±3.77% ±4.91%
 events/ee-once.js argc=5 n=20000000        ***     13.72 %       ±4.01% ±5.35% ±6.99%
Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • tests and/or benchmarks are included
  • commit message follows commit guidelines

@mscdex mscdex added events Issues and PRs related to the events subsystem / EventEmitter. performance Issues and PRs related to the performance of Node.js. labels Aug 25, 2019
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CI: https://ci.nodejs.org/job/node-test-pull-request/25225/

bnoordhuis
bnoordhuis approved these changes Aug 25, 2019
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Obvious optimization is obvious (in hindsight.) ^^

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CI: https://ci.nodejs.org/job/node-test-pull-request/25263/

ZYSzys pushed a commit that referenced this pull request Aug 27, 2019
@mscdex
events: improve once() performance
5ba3a2c 
PR-URL: #29307
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
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ZYSzys commented Aug 27, 2019

Landed in 5ba3a2c.

@ZYSzys ZYSzys closed this Aug 27, 2019
BridgeAR pushed a commit that referenced this pull request Sep 3, 2019
@mscdex @BridgeAR
events: improve once() performance
a5049c0 
PR-URL: #29307
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
@BridgeAR BridgeAR mentioned this pull request Sep 3, 2019
Merged
BridgeAR pushed a commit that referenced this pull request Sep 4, 2019
@mscdex @BridgeAR
events: improve once() performance
3bc16f9 
PR-URL: #29307
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
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@ZYSzys ZYSzys ZYSzys approved these changes

@trivikr trivikr trivikr approved these changes

@cjihrig cjihrig cjihrig approved these changes

@lpinca lpinca lpinca approved these changes

@jasnell jasnell jasnell approved these changes

@bnoordhuis bnoordhuis bnoordhuis approved these changes

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