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Issue 732311 link

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Issue metadata

Status: Duplicate
Merged: issue 731659
Owner: ----
Closed: Jun 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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16.2% regression in blink_perf.parser at 477119:477205

Project Member Reported by alexclarke@chromium.org, Jun 12 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=732311

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg5uL9wgoM


Bot(s) for this bug's original alert(s):

android-nexus7v2
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Jun 12 2017

Mergedinto: 731659
Status: Duplicate (was: Untriaged)

=== BISECT JOB RESULTS ===
Perf regression found with culprit

Suspected Commit
  Author : cathiechen
  Commit : 47f9b0ff7d4594f6633956ac570966439b4d5125
  Date   : Tue Jun 06 04:51:41 2017
  Subject: Fix font-size shaking issue in some page

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : blink_perf.parser
  Metric       : html5-full-render/html5-full-render
  Change       : 14.35% | 36532.0448333 -> 41773.6386667

Revision             Result                  N
chromium@477118      36532.0 +- 301.289      6      good
chromium@477162      36459.5 +- 308.367      6      good
chromium@477184      36500.9 +- 494.803      6      good
chromium@477195      36499.3 +- 295.819      6      good
chromium@477197      36321.0 +- 463.817      6      good
chromium@477198      42039.5 +- 324.058      6      bad       <--
chromium@477200      42271.6 +- 315.392      6      bad
chromium@477205      41773.6 +- 657.756      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests blink_perf.parser

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8977001767062665264

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5302265620987904


| O O | Visit http://www.chromium.org/developers/speed-infra/perf-bug-faq
|  X  | for more information addressing perf regression bugs. For feedback,
| / \ | file a bug with component Speed>Bisection.  Thank you!

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