process: slight refinements to nextTick #17421
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addaleax
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lpinca
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jasnell
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apapirovski
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Remove length prop on NextTickQueue class. We technically don't need to keep track of the length of the queue in two places as we already have tickInfo doing that work (between the index & the length we have enough data for everything). Store asyncId in a const within the _tickCallback function. Accessing Symbol properties seems to be quite a bit more expensive than string keys so this actually has a decent performance impact. PR-URL: #17421 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: James M Snell <[email protected]>
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Landed in b1acba3 |
MylesBorins
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Dec 12, 2017
Remove length prop on NextTickQueue class. We technically don't need to keep track of the length of the queue in two places as we already have tickInfo doing that work (between the index & the length we have enough data for everything). Store asyncId in a const within the _tickCallback function. Accessing Symbol properties seems to be quite a bit more expensive than string keys so this actually has a decent performance impact. PR-URL: #17421 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: James M Snell <[email protected]>
MylesBorins
pushed a commit
that referenced
this pull request
Dec 12, 2017
Remove length prop on NextTickQueue class. We technically don't need to keep track of the length of the queue in two places as we already have tickInfo doing that work (between the index & the length we have enough data for everything). Store asyncId in a const within the _tickCallback function. Accessing Symbol properties seems to be quite a bit more expensive than string keys so this actually has a decent performance impact. PR-URL: #17421 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: James M Snell <[email protected]>
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Were the perf benefits in this high enough to backport? |
targos
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A couple of very slight refinements to
process.nextTick& its supporting code.lengthprop onNextTickQueueclass. We technically don't need to keep track of the length of the queue in two places as we already havetickInfodoing that work (between the index & the length we have enough data for everything).asyncIdin a const within the_tickCallbackfunction. Accessing symbol properties seems to be quite a bit more expensive than string keys so this actually has a decent performance impact.Checklist
make -j4 test(UNIX), orvcbuild test(Windows) passesAffected core subsystem(s)
process