src: speed up `process.getActiveResourcesInfo()`#46014

RaisinTen · 2022-12-29T14:11:08Z

This change reduces the number of calls that were crossing the JS-C++ boundary to 1 and also removes the need for calling Array::New() multiple times internally and ArrayPrototypeConcat-ing the results later on, thus improving performance by 75%!

Refs: #44445 (review)
Signed-off-by: Darshan Sen [email protected]

process.getActiveResourcesInfo() benchmark result: 75% improvement
timers benchmark result: no noticeable deterioration

This change reduces the number of calls that were crossing the JS-C++ boundary to 1 and also removes the need for calling Array::New() multiple times internally and ArrayPrototypeConcat-ing the results later on, thus improving performance. Refs: nodejs#44445 (review) Signed-off-by: Darshan Sen <[email protected]>

nodejs-github-bot · 2022-12-29T14:11:12Z

Review requested:

@nodejs/startup

aduh95 · 2022-12-29T19:08:52Z

Benchmark CI: https://ci.nodejs.org/job/benchmark-node-micro-benchmarks/1280

 confidence improvement accuracy (*) (**) (***) process/getActiveResourcesInfo.js n=100000 immediatesCount=10000 timeoutsCount=10000 requestsCount=10000 handlesCount=10000 *** 75.23 % ±4.60% ±6.19% ±8.19%

aduh95 · 2022-12-29T20:19:51Z

Benchmark CI(timers): https://ci.nodejs.org/job/benchmark-node-micro-benchmarks/1281

Results

 confidence improvement accuracy (*) (**) (***) timers/immediate.js type='breadth' n=5000000 0.55 % ±1.51% ±2.02% ±2.63% timers/immediate.js type='breadth1' n=5000000 -0.66 % ±1.90% ±2.53% ±3.30% timers/immediate.js type='breadth4' n=5000000 -2.26 % ±4.90% ±6.52% ±8.49% timers/immediate.js type='clear' n=5000000 ** 3.84 % ±2.51% ±3.34% ±4.36% timers/immediate.js type='depth' n=5000000 *** 4.91 % ±2.09% ±2.81% ±3.70% timers/immediate.js type='depth1' n=5000000 2.35 % ±2.66% ±3.55% ±4.65% timers/set-immediate-breadth-args.js n=5000000 0.08 % ±4.30% ±5.72% ±7.44% timers/set-immediate-breadth.js n=10000000 1.91 % ±2.16% ±2.87% ±3.75% timers/set-immediate-depth-args.js n=5000000 1.23 % ±2.30% ±3.06% ±3.98% timers/timers-breadth-args.js n=1000000 -0.74 % ±6.10% ±8.11% ±10.56% timers/timers-breadth.js n=5000000 2.99 % ±6.06% ±8.06% ±10.49% timers/timers-cancel-pooled.js n=5000000 3.68 % ±7.33% ±9.75% ±12.69% timers/timers-cancel-unpooled.js direction='end' n=1000000 -4.24 % ±10.53% ±14.01% ±18.23% timers/timers-cancel-unpooled.js direction='start' n=1000000 0.44 % ±3.24% ±4.31% ±5.61% timers/timers-depth.js n=1000 -0.07 % ±0.48% ±0.64% ±0.85% timers/timers-insert-pooled.js n=5000000 * 4.61 % ±4.39% ±5.84% ±7.61% timers/timers-insert-unpooled.js direction='end' n=1000000 -0.92 % ±1.74% ±2.32% ±3.02% timers/timers-insert-unpooled.js direction='start' n=1000000 -0.22 % ±2.04% ±2.71% ±3.53% timers/timers-timeout-nexttick.js n=50000 -0.75 % ±2.58% ±3.43% ±4.48% timers/timers-timeout-nexttick.js n=5000000 -2.15 % ±5.46% ±7.27% ±9.46% timers/timers-timeout-pooled.js n=10000000 2.97 % ±6.69% ±8.90% ±11.59% timers/timers-timeout-unpooled.js n=1000000 0.22 % ±1.68% ±2.25% ±2.94% Be aware that when doing many comparisons the risk of a false-positive result increases. In this case, there are 22 comparisons, you can thus expect the following amount of false-positive results: 1.10 false positives, when considering a 5% risk acceptance (*, **, ***), 0.22 false positives, when considering a 1% risk acceptance (**, ***), 0.02 false positives, when considering a 0.1% risk acceptance (***)

lib/internal/timers.js

anonrig · 2023-01-01T20:54:38Z

src/node_process_methods.cc

-voidGetActiveHandlesInfo(const FunctionCallbackInfo<Value>& args){
+staticvoidGetActiveResourcesInfo(const FunctionCallbackInfo<Value>& args){
 Environment* env = Environment::GetCurrent(args);
+ std::vector<Local<Value>> resources_info;


I wonder if you can omit using std::vector for better performance in here.

Any suggestions on how you think that can be done?

Refs: nodejs#46014 (comment) Signed-off-by: Darshan Sen <[email protected]>

lib/internal/timers.js

Co-authored-by: Antoine du Hamel <[email protected]>

nodejs-github-bot · 2023-01-03T08:15:41Z

CI: https://ci.nodejs.org/job/node-test-pull-request/48821/

nodejs-github-bot · 2023-01-03T09:22:14Z

Commit Queue failed

- Loading data for nodejs/node/pull/46014 ✔ Done loading data for nodejs/node/pull/46014 ----------------------------------- PR info ------------------------------------ Title src: speed up `process.getActiveResourcesInfo()` (#46014) Author Darshan Sen (@RaisinTen) Branch RaisinTen:src/speed-up-process.getActiveResourcesInfo -> nodejs:main Labels c++, lib / src, author ready, needs-ci, commit-queue-squash Commits 3 - src: speed up process.getActiveResourcesInfo() - lib: explain timeoutInfo - lib: update comment Committers 2 - Darshan Sen - GitHub PR-URL: https://github.com/nodejs/node/pull/46014 Reviewed-By: Antoine du Hamel Reviewed-By: Chengzhong Wu ------------------------------ Generated metadata ------------------------------ PR-URL: https://github.com/nodejs/node/pull/46014 Reviewed-By: Antoine du Hamel Reviewed-By: Chengzhong Wu -------------------------------------------------------------------------------- ⚠ Commits were pushed since the last review: ⚠ - lib: update comment ℹ This PR was created on Thu, 29 Dec 2022 14:11:08 GMT ✔ Approvals: 2 ✔ - Antoine du Hamel (@aduh95) (TSC): https://github.com/nodejs/node/pull/46014#pullrequestreview-1232745904 ✔ - Chengzhong Wu (@legendecas) (TSC): https://github.com/nodejs/node/pull/46014#pullrequestreview-1233540022 ✔ Last GitHub CI successful ℹ Last Benchmark CI on 2022-12-29T20:19:51Z: https://ci.nodejs.org/job/benchmark-node-micro-benchmarks/1281 ℹ Last Full PR CI on 2023-01-03T08:15:41Z: https://ci.nodejs.org/job/node-test-pull-request/48821/ - Querying data for job/node-test-pull-request/48821/ ✔ Last Jenkins CI successful -------------------------------------------------------------------------------- ✔ Aborted `git node land` session in /home/runner/work/node/node/.ncu

https://github.com/nodejs/node/actions/runs/3828266911

nodejs-github-bot · 2023-01-03T10:36:27Z

Landed in e35e893

This change reduces the number of calls that were crossing the JS-C++ boundary to 1 and also removes the need for calling Array::New() multiple times internally and ArrayPrototypeConcat-ing the results later on, thus improving performance. Refs: nodejs#44445 (review) Signed-off-by: Darshan Sen <[email protected]> PR-URL: nodejs#46014 Reviewed-By: Antoine du Hamel <[email protected]> Reviewed-By: Chengzhong Wu <[email protected]>

This change reduces the number of calls that were crossing the JS-C++ boundary to 1 and also removes the need for calling Array::New() multiple times internally and ArrayPrototypeConcat-ing the results later on, thus improving performance. Refs: #44445 (review) Signed-off-by: Darshan Sen <[email protected]> PR-URL: #46014 Reviewed-By: Antoine du Hamel <[email protected]> Reviewed-By: Chengzhong Wu <[email protected]>

nodejs-github-bot added c++ Issues and PRs that require attention from people who are familiar with C++. lib / src Issues and PRs related to general changes in the lib or src directory. needs-ci PRs that need a full CI run. labels Dec 29, 2022

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lib: explain timeoutInfo
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Refs: nodejs#46014 (comment) Signed-off-by: Darshan Sen <[email protected]>

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Co-authored-by: Antoine du Hamel <[email protected]>

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nodejs-github-bot merged commit e35e893 into nodejs:mainJan 3, 2023

RaisinTen deleted the src/speed-up-process.getActiveResourcesInfo branch January 3, 2023 10:37

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CI Reliability 2023-01-04 nodejs/reliability#478
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RafaelGSS mentioned this pull request Jan 20, 2023
v19.5.0 proposal #46286
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V18.14.0 proposal #46396
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