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Issue metadata

Status: Duplicate
Merged: issue 699705
Owner: ----
Closed: Mar 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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23% regression in media.android.tough_video_cases at 455069:455113

Project Member Reported by liberato@google.com, Mar 8 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=699776

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg1Nj9sgkM


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

android-nexus5X
Mergedinto: 699705
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : pdr
  Commit : a20ad732333dc9db2b545886acd16a11abdc5842
  Date   : Tue Mar 07 17:11:15 2017
  Subject: Remove indirection: setup scrollbar scroll layers in the scrollbar constructor

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : media.android.tough_video_cases
  Metric       : cpu_utilization/tulip2.ogv_browser
  Change       : 28.68% | 2.38632876339 -> 3.07062026274

Revision             Result                   N
chromium@455068      2.38633 +- 0.329945      6      good
chromium@455091      2.3058 +- 0.380137       6      good
chromium@455102      2.46164 +- 0.42526       6      good
chromium@455104      2.25293 +- 0.311077      6      good
chromium@455105      3.09352 +- 0.464856      6      bad       <--
chromium@455108      3.17146 +- 0.430103      6      bad
chromium@455113      3.07062 +- 0.162579      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 media.android.tough_video_cases

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8985647742349512800

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5302915901685760


| 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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