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Issue 710210 link

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Issue metadata

Status: Duplicate
Merged: issue 709674
Owner: ----
Closed: Apr 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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21.6% regression in page_cycler_v2.typical_25 at 461988:462036

Project Member Reported by m...@chromium.org, Apr 10 2017

Issue description

See the link to graphs below.
 

Comment 1 by m...@chromium.org, Apr 10 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=710210

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg_OyNsgsM


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

chromium-rel-mac-retina
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Apr 11 2017

Mergedinto: 709674
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : alancutter
  Commit : 317a8e0e26459f401312043fa99ed8e17b1b24a4
  Date   : Wed Apr 05 10:09:29 2017
  Subject: Notify Blink to suppress frame requests during BeginMainFrame

Bisect Details
  Configuration: mac_retina_perf_bisect
  Benchmark    : page_cycler_v2.typical_25
  Metric       : timeToFirstMeaningfulPaint_avg/pcv1-warm/http___www.ign.com_
  Change       : 17.73% | 245.302333333 -> 288.786166667

Revision             Result                  N
chromium@461987      245.302 +- 10.2957      6       good
chromium@462012      243.991 +- 6.90167      6       good
chromium@462018      245.743 +- 2.99047      6       good
chromium@462021      245.886 +- 7.91598      9       good
chromium@462022      293.988 +- 55.1509      9       bad       <--
chromium@462023      288.847 +- 71.1292      14      bad
chromium@462024      295.222 +- 9.84482      9       bad
chromium@462036      288.786 +- 44.0046      6       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=http...www.ign.com. page_cycler_v2.typical_25

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8982662430317777312

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5242102079815680


| 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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