deps: backport 03ef3cd from V8 upstream#3165
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Reduces likelihood of the filename being truncated in /tmp/perf-*.map when profiling with --perf_basic_prof. v8/v8@03ef3cd Original commit message: improve perf_basic_prof filename reporting The buffer used for appending filenames to the string printed to the perf_basic_prof log was unnecessarily too small. Bump it up to be at least kUtf8BufferSize. Truncation of filenames makes it really hard to work with profiles gathered on Node.js. Because of the way Node.js works, you can have node module dependencies in deeply nested directories. The last thing you want when investigating a performance problem is to have script names be truncated. This patch is a stop-gap. Ideally, I want no truncation of the filename at all and use a dynamically growing buffer. That would be a larger change, and I wanted to have a quick fix available that can be back-ported to Node.js LTS release. [email protected],[email protected] BUG= Review URL: https://codereview.chromium.org/1388543002 Cr-Commit-Position: refs/heads/master@{nodejs#31092}
Member
bnoordhuis commented Oct 3, 2015
LGTM |
ofrobots added a commit that referenced this pull request Oct 5, 2015
Reduces likelihood of the filename being truncated in /tmp/perf-*.map when profiling with --perf_basic_prof. PR-URL: #3165 Reviewed-By: bnoordhuis - Ben Noordhuis <[email protected]> v8/v8@03ef3cd Original commit message: improve perf_basic_prof filename reporting The buffer used for appending filenames to the string printed to the perf_basic_prof log was unnecessarily too small. Bump it up to be at least kUtf8BufferSize. Truncation of filenames makes it really hard to work with profiles gathered on Node.js. Because of the way Node.js works, you can have node module dependencies in deeply nested directories. The last thing you want when investigating a performance problem is to have script names be truncated. This patch is a stop-gap. Ideally, I want no truncation of the filename at all and use a dynamically growing buffer. That would be a larger change, and I wanted to have a quick fix available that can be back-ported to Node.js LTS release. [email protected],[email protected] BUG= Review URL: https://codereview.chromium.org/1388543002 Cr-Commit-Position: refs/heads/master@{#31092}
ContributorAuthor
ofrobots commented Oct 5, 2015
Landed on master in 6fff47f. |
ContributorAuthor
ofrobots commented Oct 5, 2015
I forgot to run a CI, apologies. Here's the CI: https://ci.nodejs.org/job/node-test-pull-request/417/. As expected, the CI looks okay as we don't really run anything with |
Member
targos commented Oct 6, 2015
Can this be closed? |
ContributorAuthor
ofrobots commented Oct 7, 2015
Re-opening to revert this due to https://codereview.chromium.org/1390923004/ |
ofrobots added a commit to ofrobots/node that referenced this pull request Oct 26, 2015
This is a reland of nodejs#3165. The patch abates the truncation of script filenames in the perf-event output produced by V8. V8 commits: Original: v8/v8@03ef3cd Reland: v8/v8@010897c Original commit message: improve perf_basic_prof filename reporting The buffer used for appending filenames to the string printed to the perf_basic_prof log was unnecessarily too small. Bump it up to be at least kUtf8BufferSize. Truncation of filenames makes it really hard to work with profiles gathered on Node.js. Because of the way Node.js works, you can have node module dependencies in deeply nested directories. The last thing you want when investigating a performance problem is to have script names be truncated. This patch is a stop-gap. Ideally, I want no truncation of the filename at all and use a dynamically growing buffer. That would be a larger change, and I wanted to have a quick fix available that can be back-ported to Node.js LTS release. [email protected],[email protected] BUG= Review URL: https://codereview.chromium.org/1388543002
This was referenced Oct 27, 2015
ofrobots added a commit that referenced this pull request Oct 28, 2015
This is a reland of #3165. The patch abates the truncation of script filenames in the perf-event output produced by V8. V8 commits: Original: v8/v8@03ef3cd Reland: v8/v8@010897c Original commit message: improve perf_basic_prof filename reporting The buffer used for appending filenames to the string printed to the perf_basic_prof log was unnecessarily too small. Bump it up to be at least kUtf8BufferSize. Truncation of filenames makes it really hard to work with profiles gathered on Node.js. Because of the way Node.js works, you can have node module dependencies in deeply nested directories. The last thing you want when investigating a performance problem is to have script names be truncated. This patch is a stop-gap. Ideally, I want no truncation of the filename at all and use a dynamically growing buffer. That would be a larger change, and I wanted to have a quick fix available that can be back-ported to Node.js LTS release. [email protected],[email protected] BUG= Review URL: https://codereview.chromium.org/1388543002 PR-URL: #3520 Reviewed-By: bnoordhuis - Ben Noordhuis <[email protected]>
ofrobots added a commit that referenced this pull request Oct 28, 2015
This is a reland of #3165. The patch abates the truncation of script filenames in the perf-event output produced by V8. V8 commits: Original: v8/v8@03ef3cd Reland: v8/v8@010897c Original commit message: improve perf_basic_prof filename reporting The buffer used for appending filenames to the string printed to the perf_basic_prof log was unnecessarily too small. Bump it up to be at least kUtf8BufferSize. Truncation of filenames makes it really hard to work with profiles gathered on Node.js. Because of the way Node.js works, you can have node module dependencies in deeply nested directories. The last thing you want when investigating a performance problem is to have script names be truncated. This patch is a stop-gap. Ideally, I want no truncation of the filename at all and use a dynamically growing buffer. That would be a larger change, and I wanted to have a quick fix available that can be back-ported to Node.js LTS release. [email protected],[email protected] BUG= Review URL: https://codereview.chromium.org/1388543002 PR-URL: #3520 Reviewed-By: bnoordhuis - Ben Noordhuis <[email protected]>
rvagg pushed a commit to rvagg/io.js that referenced this pull request Oct 29, 2015
This is a reland of nodejs#3165. The patch abates the truncation of script filenames in the perf-event output produced by V8. V8 commits: Original: v8/v8@03ef3cd Reland: v8/v8@010897c Original commit message: improve perf_basic_prof filename reporting The buffer used for appending filenames to the string printed to the perf_basic_prof log was unnecessarily too small. Bump it up to be at least kUtf8BufferSize. Truncation of filenames makes it really hard to work with profiles gathered on Node.js. Because of the way Node.js works, you can have node module dependencies in deeply nested directories. The last thing you want when investigating a performance problem is to have script names be truncated. This patch is a stop-gap. Ideally, I want no truncation of the filename at all and use a dynamically growing buffer. That would be a larger change, and I wanted to have a quick fix available that can be back-ported to Node.js LTS release. [email protected],[email protected] BUG= Review URL: https://codereview.chromium.org/1388543002 PR-URL: nodejs#3520 Reviewed-By: bnoordhuis - Ben Noordhuis <[email protected]>
ofrobots added a commit that referenced this pull request Oct 29, 2015
This is a reland of #3165. The patch abates the truncation of script filenames in the perf-event output produced by V8. V8 commits: Original: v8/v8@03ef3cd Reland: v8/v8@010897c Original commit message: improve perf_basic_prof filename reporting The buffer used for appending filenames to the string printed to the perf_basic_prof log was unnecessarily too small. Bump it up to be at least kUtf8BufferSize. Truncation of filenames makes it really hard to work with profiles gathered on Node.js. Because of the way Node.js works, you can have node module dependencies in deeply nested directories. The last thing you want when investigating a performance problem is to have script names be truncated. This patch is a stop-gap. Ideally, I want no truncation of the filename at all and use a dynamically growing buffer. That would be a larger change, and I wanted to have a quick fix available that can be back-ported to Node.js LTS release. [email protected],[email protected] BUG= Review URL: https://codereview.chromium.org/1388543002 PR-URL: #3520 Reviewed-By: bnoordhuis - Ben Noordhuis <[email protected]>
Closed
Member
jasnell commented Dec 17, 2015
@ofrobots@bnoordhuis ... does this need to go into v4 |
Member
jasnell commented Dec 17, 2015
Nevermind... just saw #3237 |
Member
bnoordhuis commented Dec 17, 2015
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Reduces likelihood of the filename being truncated in /tmp/perf-*.map when
profiling with --perf_basic_prof.
R=@bnoordhuis
v8/v8@03ef3cd
Original commit message:
improve perf_basic_prof filename reporting
The buffer used for appending filenames to the string printed to the
perf_basic_prof log was unnecessarily too small. Bump it up to be at least
kUtf8BufferSize.
Truncation of filenames makes it really hard to work with profiles gathered on
Node.js. Because of the way Node.js works, you can have node module dependencies
in deeply nested directories. The last thing you want when investigating a
performance problem is to have script names be truncated.
This patch is a stop-gap. Ideally, I want no truncation of the filename at all
and use a dynamically growing buffer. That would be a larger change, and I
wanted to have a quick fix available that can be back-ported to Node.js LTS
release.
R=[email protected],[email protected]
BUG=
Review URL: https://codereview.chromium.org/1388543002
Cr-Commit-Position: refs/heads/master@{#31092}