deps: backport 2bcbe2f from V8 upstream #7814
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ofrobots
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v8 engine
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LGTM but out of curiosity, is there a reason you opted for line buffering instead of no buffering? It seems the output is line oriented anyways so libc's newline scanning just adds unnecessary, if minimal, overhead. |
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No strong reason other than to avoid any file watchers from observing partially complete lines. The output is indeed line oriented today; but the code may change in the future. The new line scanning is going to be negligible cost. |
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Rebased, added a V8 patch-level bump. Relaunched CI: https://ci.nodejs.org/job/node-test-pull-request/3413/. |
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V8 CI: https://ci.nodejs.org/job/node-test-commit-v8-linux/244/. I think the Power BE machine has infrastructure issues. The rest are green. |
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@nodejs/release: this is ready for landing onto |
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works for me :] |
Excessive buffering of perf map files in V8 could cause profiles to be missing symbols at times. Original commit message: switch perf and ll_prof loggers to line buffering BUG=v8:5015 R=jarin@chromium.org,yangguo@chromium.org Review-Url: https://codereview.chromium.org/2041243002 Cr-Commit-Position: refs/heads/master@{nodejs#36788} PR-URL: nodejs#7814 Reviewed-By: bnoordhuis - Ben Noordhuis <info@bnoordhuis.nl>
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Thanks. Landed on |
Merged
BethGriggs
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Aug 18, 2016
Excessive buffering of perf map files in V8 could cause profiles to be missing symbols at times. Original commit message: switch perf and ll_prof loggers to line buffering BUG=v8:5015 R=jarin@chromium.org,yangguo@chromium.org Review-Url: https://codereview.chromium.org/2041243002 Cr-Commit-Position: refs/heads/master@{#36788} PR-URL: nodejs/node#7814 Reviewed-By: bnoordhuis - Ben Noordhuis <info@bnoordhuis.nl>
MylesBorins
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Oct 10, 2016
Excessive buffering of perf map files in V8 could cause profiles to be missing symbols at times. Original commit message: switch perf and ll_prof loggers to line buffering BUG=v8:5015 R=jarin@chromium.org,yangguo@chromium.org Review-Url: https://codereview.chromium.org/2041243002 Cr-Commit-Position: refs/heads/master@{#36788} PR-URL: #7814 Reviewed-By: bnoordhuis - Ben Noordhuis <info@bnoordhuis.nl>
rvagg
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Oct 18, 2016
Excessive buffering of perf map files in V8 could cause profiles to be missing symbols at times. Original commit message: switch perf and ll_prof loggers to line buffering BUG=v8:5015 R=jarin@chromium.org,yangguo@chromium.org Review-Url: https://codereview.chromium.org/2041243002 Cr-Commit-Position: refs/heads/master@{#36788} PR-URL: #7814 Reviewed-By: bnoordhuis - Ben Noordhuis <info@bnoordhuis.nl>
MylesBorins
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Oct 26, 2016
Excessive buffering of perf map files in V8 could cause profiles to be missing symbols at times. Original commit message: switch perf and ll_prof loggers to line buffering BUG=v8:5015 R=jarin@chromium.org,yangguo@chromium.org Review-Url: https://codereview.chromium.org/2041243002 Cr-Commit-Position: refs/heads/master@{#36788} PR-URL: #7814 Reviewed-By: bnoordhuis - Ben Noordhuis <info@bnoordhuis.nl>
Closed
BethGriggs
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Nov 9, 2016
Excessive buffering of perf map files in V8 could cause profiles to be missing symbols at times. Original commit message: switch perf and ll_prof loggers to line buffering BUG=v8:5015 R=jarin@chromium.org,yangguo@chromium.org Review-Url: https://codereview.chromium.org/2041243002 Cr-Commit-Position: refs/heads/master@{#36788} PR-URL: nodejs/node#7814 Reviewed-By: bnoordhuis - Ben Noordhuis <info@bnoordhuis.nl>
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Checklist
make -j4 test(UNIX), orvcbuild test nosign(Windows) passesAffected core subsystem(s)
Description of change
Note that this is not needed on
masteras V8 5.1 already contains this fix.R=@nodejs/v8
EDIT: CI: https://ci.nodejs.org/job/node-test-pull-request/3362/