stream: avoid unnecessary drain for sync stream by ronag · Pull Request #50014 · nodejs/node

ronag · 2023-10-02T12:26:49Z

We have tried this before but reverted due to:

2868f52
#35926

However, it has quite a significant performance improvement and doesn't actually break the "streams spec". Let's have another look at it.

streams/writable-manywrites.js len=1024 callback='no' writev='no' sync='no' n=100000 *** 7.14 % ±2.24% ±2.98% ±3.90%
streams/writable-manywrites.js len=1024 callback='no' writev='no' sync='yes' n=100000 ** 4.12 % ±2.47% ±3.29% ±4.28%
streams/writable-manywrites.js len=1024 callback='no' writev='yes' sync='no' n=100000 *** 6.89 % ±2.21% ±2.94% ±3.84%
streams/writable-manywrites.js len=1024 callback='no' writev='yes' sync='yes' n=100000 *** 10.73 % ±2.25% ±3.00% ±3.90%
streams/writable-manywrites.js len=1024 callback='yes' writev='no' sync='no' n=100000 *** 8.46 % ±2.40% ±3.21% ±4.23%
streams/writable-manywrites.js len=1024 callback='yes' writev='no' sync='yes' n=100000 ** 3.00 % ±1.86% ±2.49% ±3.27%
streams/writable-manywrites.js len=1024 callback='yes' writev='yes' sync='no' n=100000 *** 7.99 % ±4.00% ±5.34% ±6.99%
streams/writable-manywrites.js len=1024 callback='yes' writev='yes' sync='yes' n=100000 *** 9.51 % ±5.19% ±6.97% ±9.20%
streams/writable-manywrites.js len=32768 callback='no' writev='no' sync='no' n=100000 *** 7.11 % ±2.05% ±2.73% ±3.55%
streams/writable-manywrites.js len=32768 callback='no' writev='no' sync='yes' n=100000 *** 233.76 % ±6.96% ±9.35% ±12.37%
streams/writable-manywrites.js len=32768 callback='no' writev='yes' sync='no' n=100000 *** 6.40 % ±1.06% ±1.42% ±1.85%
streams/writable-manywrites.js len=32768 callback='no' writev='yes' sync='yes' n=100000 *** 215.94 % ±4.96% ±6.66% ±8.79%
streams/writable-manywrites.js len=32768 callback='yes' writev='no' sync='no' n=100000 *** 6.51 % ±1.51% ±2.01% ±2.61%
streams/writable-manywrites.js len=32768 callback='yes' writev='no' sync='yes' n=100000 *** 213.41 % ±3.75% ±5.01% ±6.57%
streams/writable-manywrites.js len=32768 callback='yes' writev='yes' sync='no' n=100000 *** 5.80 % ±1.54% ±2.06% ±2.69%
streams/writable-manywrites.js len=32768 callback='yes' writev='yes' sync='yes' n=100000 *** 194.75 % ±4.29% ±5.77% ±7.62%

nodejs-github-bot · 2023-10-02T12:26:54Z

Review requested:

@nodejs/streams

PR-URL: nodejs#50014

nodejs-github-bot · 2023-10-03T10:34:12Z

CI: https://ci.nodejs.org/job/node-test-pull-request/54489/

nodejs-github-bot · 2023-10-03T13:15:45Z

CI: https://ci.nodejs.org/job/node-test-pull-request/54495/

ronag · 2023-10-03T13:15:45Z

@mcollina PTAL

mcollina

lgtm, clever

benjamingr

I'm surprised Matteo is unconcerned with this :D

lpinca · 2023-10-03T17:02:49Z

CITGM: https://ci.nodejs.org/view/Node.js-citgm/job/citgm-smoker/3302/ (queued).

nodejs-github-bot · 2023-10-04T12:45:42Z

Landed in 557044a

Refs: nodejs#50014

Refs: #50014 PR-URL: #50446 Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Moshe Atlow <moshe@atlow.co.il>

PR-URL: #50014 Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>

Refs: #50014 PR-URL: #50446 Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Moshe Atlow <moshe@atlow.co.il>

PR-URL: nodejs#50014 Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>

ronag added the semver-major PRs that contain breaking changes and should be released in the next major version. label Oct 2, 2023

ronag requested review from benjamingr and mcollina October 2, 2023 12:26

nodejs-github-bot added the needs-ci PRs that need a full CI run. label Oct 2, 2023

ronag requested a review from lpinca October 2, 2023 12:27

ronag added the needs-citgm PRs that need a CITGM CI run. label Oct 2, 2023

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ronag force-pushed the drain-sync branch 6 times, most recently from 926e815 to e384e57Compare October 2, 2023 12:44

ronag removed the semver-major PRs that contain breaking changes and should be released in the next major version. label Oct 2, 2023

ronag force-pushed the drain-sync branch from e384e57 to a4aa161Compare October 2, 2023 12:45

ronag force-pushed the drain-sync branch from a4aa161 to 35087cbCompare October 2, 2023 12:45

ronag force-pushed the drain-sync branch from 35087cb to 2b8fe13Compare October 2, 2023 12:45

ronag force-pushed the drain-sync branch from 2b8fe13 to f7e2c54Compare October 2, 2023 12:48

ronag force-pushed the drain-sync branch from f7e2c54 to e39b0c0Compare October 2, 2023 12:49

ronag force-pushed the drain-sync branch from e39b0c0 to bdfe338Compare October 2, 2023 12:52

ronag added request-ci Add this label to start a Jenkins CI on a PR. and removed needs-citgm PRs that need a CITGM CI run. labels Oct 2, 2023

github-actionsBot removed the request-ci Add this label to start a Jenkins CI on a PR. label Oct 2, 2023

stream: avoid unnecessary drain for sync stream
4844d30
PR-URL: nodejs#50014

ronag force-pushed the drain-sync branch from 980032d to 4844d30Compare October 3, 2023 07:51

mcollina approved these changes Oct 3, 2023
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ronag added the commit-queue Add this label to land a pull request using GitHub Actions. label Oct 3, 2023

benjamingr approved these changes Oct 3, 2023
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github-actionsBot mentioned this pull request Oct 4, 2023
CI Reliability 2023-10-04 nodejs/reliability#683
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nodejs-github-bot removed the commit-queue Add this label to land a pull request using GitHub Actions. label Oct 4, 2023

nodejs-github-bot merged commit 557044a into nodejs:mainOct 4, 2023

github-actionsBot mentioned this pull request Oct 5, 2023
CI Reliability 2023-10-05 nodejs/reliability#684
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RafaelGSS mentioned this pull request Oct 9, 2023
2023-10-17, Version 21.0.0 (Current) #49870
Merged

ronag added a commit to nxtedition/node that referenced this pull request Oct 28, 2023
stream: remove no longer relevant comment
49d6dc9
Refs: nodejs#50014

targos pushed a commit that referenced this pull request Nov 11, 2023
stream: avoid unnecessary drain for sync stream
88c739b
PR-URL: #50014 Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>

targos mentioned this pull request Nov 12, 2023
v20.10.0 release proposal #50682
Merged

juanarbol mentioned this pull request Dec 6, 2023
2023-12-06, N|Solid v5.0.1 Iron Release nodesource/nsolid#41
Merged

dy-dx mentioned this pull request Feb 29, 2024
piping to a stream with highWaterMark: 0 and objectMode: false is broken since node v20.10.0 #51930
Closed

poolik mentioned this pull request Mar 27, 2024
Significant memory usage increase starting from 20.10.0 for a simple HTTP server (potentially stream related) #52228
Closed

debadree25 pushed a commit to debadree25/node that referenced this pull request Apr 15, 2024
stream: avoid unnecessary drain for sync stream
9edaaf7
PR-URL: nodejs#50014 Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>

orgads mentioned this pull request May 28, 2024
[REG 20.9->20.10] stream: Pipe is stopped after error on another pipe from the same source #53185
Closed

anonrig mentioned this pull request Oct 17, 2025
update node.js streams implementation cloudflare/workerd#5298
Merged

MahinAnowar mentioned this pull request Jul 5, 2026
stream: resume flow when an errored pipe destination is removed #64310
Merged

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