http2: shrink memory to match read data #26201
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Perform a shrinking `Realloc()` so that less data is used for HTTP2 reads.
addaleax
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cjihrig
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Feb 19, 2019
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CI failures should be fixed, new CI: https://ci.nodejs.org/job/node-test-pull-request/20896/ |
BridgeAR
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Resume CI: https://ci.nodejs.org/job/node-test-pull-request/20922/ (:heavy_check_mark:) (This needs another review, cc @nodejs/http2.) |
jasnell
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Feb 21, 2019
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Landed in 83e1b97 |
addaleax
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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
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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>
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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
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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
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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>
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Perform a shrinking
Realloc()so that less data is used for HTTP2 reads.Checklist
make -j4 test(UNIX), orvcbuild test(Windows) passes