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benchmark: include webstreams benchmark #45876

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merged 1 commit into from
Dec 21, 2022

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RafaelGSS
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This PR includes some basic benchmarks for Readable and Writable web streams. @jasnell do you think we should measure something in particular?

It's on my radar to improve the performance of web streams, but I'm not sure how fair is to compare it with regular streams.

@nodejs-github-bot nodejs-github-bot added the benchmark Issues and PRs related to the benchmark subsystem. label Dec 15, 2022
function main({ n, kind }) {
switch (kind) {
case 'ReadableStream':
new ReadableStream({});
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It's better to assign the value to a binding outside the loop and do something about it in the end, otherwise the optimizing compiler might be smart enough to perform a dead code elimination and make the benchmark pointless.

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@joyeecheung joyeecheung Dec 15, 2022

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A typical technique for micro-benchmarking JS would be to pre-fill an array before the measurement starts, and you assign the values into that array during the benchmark (but do not grow or shrink it), then do something about the array in the end, in general the optimizing compiler won't attempt to eliminate the initializations in that case.

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Do we have a way to find dead code elimination? I tried some time ago with some V8 flags but it didn't work.

I've updated the code, does it solve? The benchmark results are the same.

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@joyeecheung joyeecheung Dec 16, 2022

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Do we have a way to find dead code elimination? I tried some time ago with some V8 flags but it didn't work.

You can try --trace-turbo* flags with --turbo-filter to filter out specific functions you want to take a look at (and use v8/tools/turbolizer to help looking at the output). But I'd say to benchmark Node.js's JS code the best solution is to just avoid micro-benchmarks and test a comprehensive combination of operations with varied input ;) e.g. the pipe-to benchmarks are less likely to be influenced by that.

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Indeed. I've created the creation.js to compare with streams/creation.js. This also shows how much memory it consumes (potential memory leak at some point IMHO - if you use the same n as streams it will get OOM).

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Can you add a test file for testing the benchmark? Like: test/benchmark/test-webstreams.js

Signed-off-by: RafaelGSS <rafael.nunu@hotmail.com>
@anonrig anonrig added author ready PRs that have at least one approval, no pending requests for changes, and a CI started. request-ci Add this label to start a Jenkins CI on a PR. labels Dec 19, 2022
@github-actions github-actions bot removed the request-ci Add this label to start a Jenkins CI on a PR. label Dec 19, 2022
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@RafaelGSS RafaelGSS added the commit-queue Add this label to land a pull request using GitHub Actions. label Dec 21, 2022
@nodejs-github-bot nodejs-github-bot removed the commit-queue Add this label to land a pull request using GitHub Actions. label Dec 21, 2022
@nodejs-github-bot nodejs-github-bot merged commit 70d269d into nodejs:main Dec 21, 2022
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targos pushed a commit that referenced this pull request Jan 1, 2023
Signed-off-by: RafaelGSS <rafael.nunu@hotmail.com>
PR-URL: #45876
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Paolo Insogna <paolo@cowtech.it>
@RafaelGSS RafaelGSS mentioned this pull request Jan 2, 2023
RafaelGSS added a commit that referenced this pull request Jan 4, 2023
Signed-off-by: RafaelGSS <rafael.nunu@hotmail.com>
PR-URL: #45876
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Paolo Insogna <paolo@cowtech.it>
RafaelGSS added a commit that referenced this pull request Jan 5, 2023
Signed-off-by: RafaelGSS <rafael.nunu@hotmail.com>
PR-URL: #45876
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Paolo Insogna <paolo@cowtech.it>
juanarbol pushed a commit that referenced this pull request Jan 26, 2023
Signed-off-by: RafaelGSS <rafael.nunu@hotmail.com>
PR-URL: #45876
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Paolo Insogna <paolo@cowtech.it>
@juanarbol juanarbol mentioned this pull request Jan 28, 2023
juanarbol pushed a commit that referenced this pull request Jan 31, 2023
Signed-off-by: RafaelGSS <rafael.nunu@hotmail.com>
PR-URL: #45876
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Paolo Insogna <paolo@cowtech.it>
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5 participants