[v12.x] src: make --use-largepages a runtime option #31063

gabrielschulhof · 2019-12-23T06:23:30Z

Moves the option that instructs Node.js to-remap its static code to
large pages from a configure-time option to a runtime option. This
should make it easy to assess the performance impact of such a change
without having to custom-build.

PR-URL: #30954
Reviewed-By: @bnoordhuis
Reviewed-By: @devnexen
Reviewed-By: @addaleax
Reviewed-By: @cjihrig
Reviewed-By: @gireeshpunathil
Reviewed-By: @lundibundi
Co-authored-by: @devnexen

Checklist

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

gabrielschulhof · 2019-12-23T09:15:46Z

src/large_pages/node_large_page.cc

@@ -333,9 +333,6 @@ MoveTextRegionToLargePages(const text_region& r) {
    PrintSystemError(errno);
    return -1;
  }
-  OnScopeLeave munmap_on_return([nmem, size]() {


This was the only conflict. It was expecting to remove auto munmap_on_return = OnScopeLeave(...); and not OnScopeLeave munmap_on_return(...);

configure.py

Re-introduce the build-time option as a no-op in order to retain backward compatibility for LTS purposes. Re: nodejs#31063 (review)

gabrielschulhof · 2019-12-24T17:09:59Z

@addaleax IINM there's still some buffer-freeing-related flakiness: https://ci.nodejs.org/job/node-test-commit-plinux/29916/nodes=centos7-ppcle/console

Edit: Whoops 🙂 Wrong PR 🙂

addaleax · 2019-12-24T18:08:19Z

@thangktran ^^^ fyi

Re-introduce the build-time option as a no-op in order to retain backward compatibility for LTS purposes. Re: #31063 (review) PR_URL: #31075 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Beth Griggs <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]>

gabrielschulhof · 2019-12-26T02:45:11Z

@richardlau I have landed #31075 and I have cherry-picked it into this backport.

Backport-PR-URL: #31063 PR-URL: #31095 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Gabriel Schulhof <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]>

The usage of the relevant methods from the file is conditional so make the include conditional too. Backport-PR-URL: #31063 PR-URL: #31078 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]> Reviewed-By: David Carlier <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Emit a warning when the user configures with `--use-largepages` and/or `--use-largepages-script-lld` informing them that the option is now available as a Node.js runtime option once it is built. Refs: #31063 (comment) Backport-PR-URL: #31063 PR-URL: #31103 Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Denys Otrishko <[email protected]>

MylesBorins · 2020-01-08T01:06:01Z

landed in 54635f5...f5cd6d7

Moves the option that instructs Node.js to-remap its static code to large pages from a configure-time option to a runtime option. This should make it easy to assess the performance impact of such a change without having to custom-build. Backport-PR-URL: #31063 PR-URL: #30954 Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: David Carlier <[email protected]> Reviewed-By: David Carlier <[email protected]> Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: Denys Otrishko <[email protected]> Co-authored-by: David Carlier <[email protected]>

Re-introduce the build-time option as a no-op in order to retain backward compatibility for LTS purposes. Re: #31063 (review) Backport-PR-URL: #31063 PR_URL: #31075 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Beth Griggs <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]>

Backport-PR-URL: #31063 PR-URL: #31095 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Gabriel Schulhof <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]>

The usage of the relevant methods from the file is conditional so make the include conditional too. Backport-PR-URL: #31063 PR-URL: #31078 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]> Reviewed-By: David Carlier <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Emit a warning when the user configures with `--use-largepages` and/or `--use-largepages-script-lld` informing them that the option is now available as a Node.js runtime option once it is built. Refs: #31063 (comment) Backport-PR-URL: #31063 PR-URL: #31103 Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Denys Otrishko <[email protected]>

MylesBorins · 2020-02-13T23:29:05Z

Reopening as I am proposing a reversion of this change

Re-introduce the build-time option as a no-op in order to retain backward compatibility for LTS purposes. Re: nodejs#31063 (review) PR_URL: nodejs#31075 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Beth Griggs <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]>

Emit a warning when the user configures with `--use-largepages` and/or `--use-largepages-script-lld` informing them that the option is now available as a Node.js runtime option once it is built. Refs: nodejs#31063 (comment) PR-URL: nodejs#31103 Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Denys Otrishko <[email protected]>

targos · 2020-03-07T09:15:03Z

New PR: #32092

Re-introduce the build-time option as a no-op in order to retain backward compatibility for LTS purposes. Re: nodejs#31063 (review) PR_URL: nodejs#31075 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Beth Griggs <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]>

Emit a warning when the user configures with `--use-largepages` and/or `--use-largepages-script-lld` informing them that the option is now available as a Node.js runtime option once it is built. Refs: nodejs#31063 (comment) PR-URL: nodejs#31103 Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Denys Otrishko <[email protected]>

Re-introduce the build-time option as a no-op in order to retain backward compatibility for LTS purposes. Backport-PR-URL: nodejs#32092 Re: nodejs#31063 (review) PR_URL: nodejs#31075 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Beth Griggs <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]>

Emit a warning when the user configures with `--use-largepages` and/or `--use-largepages-script-lld` informing them that the option is now available as a Node.js runtime option once it is built. Backport-PR-URL: nodejs#32092 Refs: nodejs#31063 (comment) PR-URL: nodejs#31103 Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Denys Otrishko <[email protected]>

Re-introduce the build-time option as a no-op in order to retain backward compatibility for LTS purposes. Backport-PR-URL: #32092 Re: #31063 (review) PR_URL: #31075 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Beth Griggs <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]>

Emit a warning when the user configures with `--use-largepages` and/or `--use-largepages-script-lld` informing them that the option is now available as a Node.js runtime option once it is built. Backport-PR-URL: #32092 Refs: #31063 (comment) PR-URL: #31103 Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Denys Otrishko <[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. v12.x labels Dec 23, 2019

gabrielschulhof changed the title ~~src: make --use-largepages a runtime option~~ [v12.x] src: make --use-largepages a runtime option Dec 23, 2019

gabrielschulhof requested review from devnexen, bnoordhuis and addaleax December 23, 2019 09:13

gabrielschulhof commented Dec 23, 2019

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build: re-introduce --use-largepages as no-op #31075

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build: re-introduce --use-largepages as no-op

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Re-introduce the build-time option as a no-op in order to retain backward compatibility for LTS purposes. Re: nodejs#31063 (review)

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build: warn upon --use-largepages config option #31103

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MylesBorins closed this Jan 8, 2020

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12.x reverts #31782

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gabrielschulhof deleted the backport-largepages-runtime-to-v12.x branch April 21, 2020 02:58

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[v12.x] src: make --use-largepages a runtime option #31063

[v12.x] src: make --use-largepages a runtime option #31063

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[v12.x] src: make --use-largepages a runtime option #31063

[v12.x] src: make --use-largepages a runtime option #31063

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