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Issue 741726 link

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Issue metadata

Status: Duplicate
Merged: issue 741725
Owner: ----
Closed: Jul 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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1.2%-28.3% regression in performance_browser_tests at 485333:485476

Project Member Reported by pmeenan@chromium.org, Jul 12 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Jul 12 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=741726

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=bc4c0f85f1c07da56f4e60d5bdaefbe804d37e86d2f21d2f06baea8784f9245b


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

chromium-rel-win7-gpu-ati
chromium-rel-win7-gpu-intel
Project Member

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

Mergedinto: 741725
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Justin Novosad
  Commit : 3750a7881ce851e03ce6177dca30307eb4a7f5c6
  Date   : Mon Jul 10 20:50:59 2017
  Subject: Disabling display list 2D canvas by default

Bisect Details
  Configuration: winx64intel_perf_bisect
  Benchmark    : performance_browser_tests
  Metric       : TabCapturePerformance_comp_gpu/Capture
  Change       : 27.87% | 18.3474011667 -> 23.4615095

Revision             Result                   N
chromium@485332      18.3474 +- 0.18344       6      good
chromium@485362      18.4317 +- 0.202803      6      good
chromium@485370      18.4367 +- 0.221102      6      good
chromium@485371      23.4776 +- 0.250591      6      bad       <--
chromium@485372      23.5155 +- 0.284293      6      bad
chromium@485374      23.444 +- 0.165261       6      bad
chromium@485377      23.4281 +- 0.190608      6      bad
chromium@485392      23.468 +- 0.165241       6      bad
chromium@485452      23.4615 +- 0.349665      6      bad

To Run This Test
  .\src\out\Release_x64\performance_browser_tests.exe --test-launcher-print-test-stdio=always --enable-gpu

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8974256450868864240


For feedback, file a bug with component Speed>Bisection

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