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Issue metadata

Status: Duplicate
Merged: issue 727625
Owner: ----
Closed: May 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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9.2% regression in media.tough_video_cases_tbmv2 at 474676:474829

Project Member Reported by liberato@google.com, May 30 2017

Issue description

See the link to graphs below.
 

Comment 1 by liberato@google.com, May 30 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=727764

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDghvbVtQoM


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

chromium-rel-mac11
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, May 30 2017

Mergedinto: 727625
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : fsamuel
  Commit : d71466ad118aca05aa347c9766f80a5f77528588
  Date   : Thu May 25 20:35:22 2017
  Subject: cc::SurfaceDependencyTracker should not crash when a Display goes away

Bisect Details
  Configuration: mac_10_11_perf_bisect
  Benchmark    : media.tough_video_cases_tbmv2
  Metric       : cpu_time_percentage_avg/video.html?src_tulip2.wav_type_audio
  Change       : 7.33% | 0.0752146584703 -> 0.0810228247491

Revision             Result                       N
chromium@474675      0.0752147 +- 0.00623298      9       good
chromium@474752      0.0769346 +- 0.0036307       9       good
chromium@474772      0.0767528 +- 0.00607048      6       good
chromium@474782      0.0777754 +- 0.00245146      9       good
chromium@474783      0.081824 +- 0.0014901        6       bad       <--
chromium@474784      0.0809514 +- 0.0125759       14      bad
chromium@474785      0.0812227 +- 0.0150071       14      bad
chromium@474787      0.0812694 +- 0.00530193      9       bad
chromium@474791      0.0816955 +- 0.00446246      6       bad
chromium@474829      0.0810228 +- 0.00615995      9       bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=video.html.src.tulip2.wav.type.audio media.tough_video_cases_tbmv2

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8978150588996210384

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5899231816056832


| 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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