http2: shrink memory to match read data #26201
Closed
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Perform a shrinking `Realloc()` so that less data is used for HTTP2 reads.
addaleax
added
http2
nodejs-github-bot
added
c++
cjihrig
approved these changes
Feb 19, 2019
2 tasks
|
CI failures should be fixed, new CI: https://ci.nodejs.org/job/node-test-pull-request/20896/ |
BridgeAR
added
the
author ready
|
Resume CI: https://ci.nodejs.org/job/node-test-pull-request/20922/ (:heavy_check_mark:) (This needs another review, cc @nodejs/http2.) |
jasnell
approved these changes
Feb 21, 2019
|
Landed in 83e1b97 |
addaleax
added a commit
that referenced
this pull request
Feb 21, 2019
Perform a shrinking `Realloc()` so that less data is used for HTTP2 reads. PR-URL: #26201 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
addaleax
added a commit
that referenced
this pull request
Feb 21, 2019
Perform a shrinking `Realloc()` so that less data is used for HTTP2 reads. PR-URL: #26201 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Merged
rvagg
pushed a commit
that referenced
this pull request
Feb 28, 2019
Perform a shrinking `Realloc()` so that less data is used for HTTP2 reads. PR-URL: #26201 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
BethGriggs
pushed a commit
that referenced
this pull request
Aug 15, 2019
Lazily allocate `ArrayBuffer`s for the contents of DATA frames. Creating `ArrayBuffer`s is, sadly, not a cheap operation with V8. This is part of performance improvements to mitigate CVE-2019-9513. Together with the previous commit, these changes improve throughput in the adversarial case by about 100 %, and there is little more that we can do besides artificially limiting the rate of incoming metadata frames (i.e. after this patch, CPU usage is virtually exclusively in libnghttp2). [This backport also applies changes from 83e1b97 and required some manual work due to the lack of `AllocatedBuffer` on v10.x.] Refs: #26201 Backport-PR-URL: #29123 PR-URL: #29122 Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
BethGriggs
pushed a commit
that referenced
this pull request
Aug 15, 2019
Lazily allocate `ArrayBuffer`s for the contents of DATA frames. Creating `ArrayBuffer`s is, sadly, not a cheap operation with V8. This is part of performance improvements to mitigate CVE-2019-9513. Together with the previous commit, these changes improve throughput in the adversarial case by about 100 %, and there is little more that we can do besides artificially limiting the rate of incoming metadata frames (i.e. after this patch, CPU usage is virtually exclusively in libnghttp2). [This backport also applies changes from 83e1b97 and required some manual work due to the lack of `AllocatedBuffer` on v10.x. More work was necessary for v8.x, including copying utilities for `util.h` from more recent Node.js versions.] Refs: #26201 Backport-PR-URL: #29124 PR-URL: #29122 Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
# for free
to join this conversation on GitHub.
Already have an account?
# to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Perform a shrinking
Realloc()so that less data is used for HTTP2 reads.Checklist
make -j4 test(UNIX), orvcbuild test(Windows) passes