src,lib: add constrainedMemory API for process#46218

theanarkh · 2023-01-15T04:59:00Z

add constrainedMemory API for process.
cc @anonrig

make -j4 test (UNIX), or vcbuild test (Windows) passes
tests and/or benchmarks are included
documentation is changed or added
commit message follows commit guidelines

nodejs-github-bot · 2023-01-15T04:59:04Z

Review requested:

@nodejs/startup

lib/internal/process/per_thread.js

RaisinTen · 2023-01-16T05:45:58Z

Could also add some docs?

theanarkh · 2023-01-16T13:47:21Z

Could also add some docs?

Oh, sorry I forgot, fixed.

jasnell · 2023-01-17T15:15:09Z

doc/api/process.md

+is unknown, `0` is returned.
+
+It is not unusual for this value to be less than or greater than `os.totalmem()`.
+This function currently only returns a non-zero value on Linux, based on cgroups


This sentence is worded a bit confusingly. What is the value on Windows?

The description was copied from the Libuv documentation.

That may be true but it's still confusing as is. Not sure I have a better suggestion tho

doc/api/process.md

test/sequential/test-process-constrained-memory.js

bnoordhuis

Two suggestions:

Maybe add an Experimental marker to the docs. Libuv's implementation changed in the not too distant past and it may change again
Implementing it as a fast API is probably overkill. The limiting factor is the amount of file parsing libuv has to do. And also, you're probably not going to call it 1,000x/sec.

theanarkh · 2023-01-19T05:25:29Z

Two suggestions:
Maybe add an Experimental marker to the docs. Libuv's implementation changed in the not too distant past and it may change again
Implementing it as a fast API is probably overkill. The limiting factor is the amount of file parsing libuv has to do. And also, you're probably not going to call it 1,000x/sec.

Thanks for suggestions, Hi @anonrig, would you mind taking a look at the second suggestion. Thanks !

doc/api/process.md

anonrig · 2023-01-19T18:05:14Z

Thanks for suggestions, Hi @anonrig, would you mind taking a look at the second suggestion. Thanks !

I agree that it is an overkill, but I don't see any downside of adding fast API. This might be important/valuable functionality which result in high usage (for example APMs). But if @bnoordhuis or anybody disagrees with it, I'm fine with removing it.

RaisinTen

I don't see any downside of adding fast API

From what I read in #46199, the fast API would only be triggered if the function is called in a loop with a high iteration count. Unless that's something we expect, the fast API would be a function with little to no usage.

doc/api/process.md

theanarkh · 2023-01-20T07:20:43Z

Thanks for all suggestions, i have removed the fast API code, please help review again.

doc/api/process.md

src/node_process_methods.cc

test/parallel/test-process-constrained-memory.js

nodejs-github-bot · 2023-01-22T04:36:02Z

CI: https://ci.nodejs.org/job/node-test-pull-request/49124/

nodejs-github-bot · 2023-01-22T08:50:59Z

CI: https://ci.nodejs.org/job/node-test-pull-request/49127/

theanarkh · 2023-01-24T08:18:20Z

@tniessen Hi, can help this PR again ? thanks .

anonrig · 2023-01-25T00:40:01Z

There weren't any objections, blockers and/or active conversations. We can merge it.

nodejs-github-bot · 2023-01-25T00:47:10Z

Landed in 73c0564

PR-URL: #46218 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Darshan Sen <[email protected]>

Notable changes: buffer: * (SEMVER-MINOR) add isAscii method (Yagiz Nizipli) #46046 deps: * upgrade npm to 9.4.0 (npm team) #46353 esm: * leverage loaders when resolving subsequent loaders (Maël Nison) #43772 fs: * (SEMVER-MINOR) add statfs() functions (Colin Ihrig) #46358 src,lib: * (SEMVER-MINOR) add constrainedMemory API for process (theanarkh) #46218 test_runner: * (SEMVER-MINOR) add reporters (Moshe Atlow) #45712 v8: * (SEMVER-MINOR) support gc profile (theanarkh) #46255 vm: * (SEMVER-MINOR) expose cachedDataRejected for vm.compileFunction (Anna Henningsen) #46320 PR-URL: #46455

PR-URL: #46218 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Darshan Sen <[email protected]>

Notable Changes buffer: * add isAscii method (Yagiz Nizipli) #46046 fs: * add statfs() functions (Colin Ihrig) #46358 src,lib: * add constrainedMemory API for process (theanarkh) #46218 v8: * support gc profile (theanarkh) #46255 vm: * expose cachedDataRejected for vm.compileFunction (Anna Henningsen) #46320 PR-URL: TDB

Notable Changes buffer: * add isAscii method (Yagiz Nizipli) #46046 fs: * add statfs() functions (Colin Ihrig) #46358 src,lib: * add constrainedMemory API for process (theanarkh) #46218 v8: * support gc profile (theanarkh) #46255 vm: * expose cachedDataRejected for vm.compileFunction (Anna Henningsen) #46320 PR-URL: #46920

Notable Changes: buffer: * add isAscii method (Yagiz Nizipli) #46046 fs: * add statfs() functions (Colin Ihrig) #46358 src,lib: * add constrainedMemory API for process (theanarkh) #46218 v8: * support gc profile (theanarkh) #46255 vm: * expose cachedDataRejected for vm.compileFunction (Anna Henningsen) #46320 PR-URL: #46920

Notable Changes: buffer: * (SEMVER-MINOR) add isAscii method (Yagiz Nizipli) #46046 doc,lib,src,test: * rename --test-coverage (Colin Ihrig) #46017 fs: * (SEMVER-MINOR) add statfs() functions (Colin Ihrig) #46358 src,lib: * (SEMVER-MINOR) add constrainedMemory API for process (theanarkh) #46218 test_runner: * add initial code coverage support (Colin Ihrig) #46017 * (SEMVER-MINOR) add reporters (Moshe Atlow) #45712 v8: * (SEMVER-MINOR) support gc profile (theanarkh) #46255 vm: * (SEMVER-MINOR) expose cachedDataRejected for vm.compileFunction (Anna Henningsen) #46320 PR-URL: #46920

PR-URL: #46218 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Darshan Sen <[email protected]>

Notable changes: buffer: * (SEMVER-MINOR) add isAscii method (Yagiz Nizipli) #46046 doc,lib,src,test: * rename --test-coverage (Colin Ihrig) #46017 fs: * (SEMVER-MINOR) add statfs() functions (Colin Ihrig) #46358 src,lib: * (SEMVER-MINOR) add constrainedMemory API for process (theanarkh) #46218 test_runner: * add initial code coverage support (Colin Ihrig) #46017 * (SEMVER-MINOR) add reporters (Moshe Atlow) #45712 v8: * (SEMVER-MINOR) support gc profile (theanarkh) #46255 vm: * (SEMVER-MINOR) expose cachedDataRejected for vm.compileFunction (Anna Henningsen) #46320 PR-URL: https://github.com/nodejs/node/pull/46920/commits

Notable changes: buffer: * (SEMVER-MINOR) add isAscii method (Yagiz Nizipli) #46046 doc,lib,src,test: * rename --test-coverage (Colin Ihrig) #46017 fs: * (SEMVER-MINOR) add statfs() functions (Colin Ihrig) #46358 src,lib: * (SEMVER-MINOR) add constrainedMemory API for process (theanarkh) #46218 test_runner: * add initial code coverage support (Colin Ihrig) #46017 * (SEMVER-MINOR) add reporters (Moshe Atlow) #45712 v8: * (SEMVER-MINOR) support gc profile (theanarkh) #46255 vm: * (SEMVER-MINOR) expose cachedDataRejected for vm.compileFunction (Anna Henningsen) #46320 PR-URL: #46920

nodejs-github-bot added c++ Issues and PRs that require attention from people who are familiar with C++. needs-ci PRs that need a full CI run. process Issues and PRs related to the process subsystem. labels Jan 15, 2023

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tniessen added the semver-minor PRs that contain new features and should be released in the next minor version. label Jan 20, 2023

theanarkh requested a review from tniessen January 22, 2023 04:43

This was referenced Jan 23, 2023
CI Reliability 2023-01-23 nodejs/reliability#492
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CI Reliability 2023-01-24 nodejs/reliability#493
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theanarkh added the author ready PRs that have at least one approval, no pending requests for changes, and a CI started. label Jan 24, 2023

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ruyadorno pushed a commit that referenced this pull request Feb 1, 2023
src,lib: add constrainedMemory API for process
d52f600
PR-URL: #46218 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Darshan Sen <[email protected]>

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v19.6.0 proposal #46455
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juanarbol pushed a commit that referenced this pull request Mar 3, 2023
src,lib: add constrainedMemory API for process
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PR-URL: #46218 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Darshan Sen <[email protected]>

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V18.15.0 proposal #46920
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juanarbol pushed a commit that referenced this pull request Mar 5, 2023
src,lib: add constrainedMemory API for process
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PR-URL: #46218 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Darshan Sen <[email protected]>

richardlau mentioned this pull request Dec 9, 2023
lib, src: add maxmem prop in os module #51102
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src,lib: add constrainedMemory API for process#46218

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