stream: fix sync write perf regression #33032
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While nodejs#31046 did make async writes faster it at the same time made sync writes slower. This PR corrects this while maintaining performance improvements.
ronag
commented
Apr 23, 2020
| @@ -421,27 +421,24 @@ function onwrite(stream, er) { | |||
| onwriteError(stream, state, er, cb); | |||
| } | |||
| } else { | |||
| if (!state.destroyed) { | |||
| if (state.buffered.length > state.bufferedIndex) { | |||
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since clearBuffer is not inlineable this condition removes a lot of the overhead of calling into clearBuffer
ronag
commented
Apr 23, 2020
| clearBuffer(stream, state); | ||
| } | ||
| if (state.needDrain || cb !== nop || state.ending || state.destroyed) { |
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This condition was an optimization which did not add much if any value and made the code more complex.
|
jasnell
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Apr 23, 2020
mscdex
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Apr 23, 2020
himself65
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Apr 24, 2020
addaleax
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ronag
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Apr 25, 2020
While #31046 did make async writes faster it at the same time made sync writes slower. This PR corrects this while maintaining performance improvements. PR-URL: #33032 Reviewed-By: Ruben Bridgewater <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Brian White <[email protected]> Reviewed-By: Zeyu Yang <[email protected]>
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Landed in ab7d9db |
BethGriggs
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Apr 27, 2020
While #31046 did make async writes faster it at the same time made sync writes slower. This PR corrects this while maintaining performance improvements. PR-URL: #33032 Reviewed-By: Ruben Bridgewater <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Brian White <[email protected]> Reviewed-By: Zeyu Yang <[email protected]>
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BethGriggs
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Apr 28, 2020
While #31046 did make async writes faster it at the same time made sync writes slower. This PR corrects this while maintaining performance improvements. PR-URL: #33032 Reviewed-By: Ruben Bridgewater <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Brian White <[email protected]> Reviewed-By: Zeyu Yang <[email protected]>
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While #31046 did make async writes faster it at the same time made sync writes slower.
This PR corrects this while maintaining performance improvements.
Checklist
make -j4 test(UNIX), orvcbuild test(Windows) passes