events: re-use the same isTrusted getter #34459
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Creating a new function each time the property descriptor is set comes with performance overhead, since these functions have different identities, even if they contain the same code. Refs: https://twitter.com/tverwaes/status/1285496612618473472
bnoordhuis
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jasnell
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Jul 21, 2020
lpinca
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Jul 21, 2020
ZYSzys
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Jul 21, 2020
ZYSzys
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CI: https://ci.nodejs.org/job/node-test-pull-request/32439/ (:green_heart:) |
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👍 to fast-track? seems like there is no harm in doing that |
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Is there any measurable performance benefit due to this change? |
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@wa-Nadoo Yes, a bit more than +200 % improvement (i.e. 3× faster than currently): [00:05:03|% 100| 1/1 files | 60/60 runs | 3/3 configs]: Done
confidence improvement accuracy (*) (**) (***)
events/eventtarget.js listeners=10 n=1000000 *** 214.47 % ±1.76% ±2.36% ±3.10%
events/eventtarget.js listeners=1 n=1000000 *** 235.79 % ±3.13% ±4.21% ±5.57%
events/eventtarget.js listeners=5 n=1000000 *** 223.85 % ±2.85% ±3.84% ±5.09% |
jasnell
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Creating a new function each time the property descriptor is set comes with performance overhead, since these functions have different identities, even if they contain the same code. Refs: https://twitter.com/tverwaes/status/1285496612618473472 PR-URL: #34459 Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Yongsheng Zhang <[email protected]>
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Landed in 08b6335 |
cjihrig
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Jul 23, 2020
Creating a new function each time the property descriptor is set comes with performance overhead, since these functions have different identities, even if they contain the same code. Refs: https://twitter.com/tverwaes/status/1285496612618473472 PR-URL: #34459 Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Yongsheng Zhang <[email protected]>
ruyadorno
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Jul 28, 2020
Creating a new function each time the property descriptor is set comes with performance overhead, since these functions have different identities, even if they contain the same code. Refs: https://twitter.com/tverwaes/status/1285496612618473472 PR-URL: #34459 Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Yongsheng Zhang <[email protected]>
Merged
ruyadorno
pushed a commit
that referenced
this pull request
Jul 28, 2020
Creating a new function each time the property descriptor is set comes with performance overhead, since these functions have different identities, even if they contain the same code. Refs: https://twitter.com/tverwaes/status/1285496612618473472 PR-URL: #34459 Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Yongsheng Zhang <[email protected]>
ruyadorno
pushed a commit
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Jul 29, 2020
Creating a new function each time the property descriptor is set comes with performance overhead, since these functions have different identities, even if they contain the same code. Refs: https://twitter.com/tverwaes/status/1285496612618473472 PR-URL: #34459 Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Yongsheng Zhang <[email protected]>
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Creating a new function each time the property descriptor is set
comes with performance overhead, since these functions have different
identities, even if they contain the same code.
Refs: https://twitter.com/tverwaes/status/1285496612618473472
Checklist
make -j4 test(UNIX), orvcbuild test(Windows) passes