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Issue metadata

Status: Duplicate
Merged: issue 729773
Owner: ----
Closed: Jun 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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2.8%-26.6% regression in loading.desktop at 476253:476399

Project Member Reported by chcunningham@chromium.org, Jun 6 2017

Issue description

Increase in memory and time to first meaningful paint. 
 
Mergedinto: 729773
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Philippe Hamel
  Commit : 1bc3d8c1ce10761406e57b07f7a2dc1ad301221e
  Date   : Thu Jun 01 16:57:23 2017
  Subject: Add query only fieldtrial for TranslateRankerModel.

Bisect Details
  Configuration: winx64intel_perf_bisect
  Benchmark    : loading.desktop
  Metric       : timeToFirstMeaningfulPaint_avg/pcv1-warm/Daum
  Change       : 23.73% | 703.532444444 -> 874.898357142

Revision             Result                  N
chromium@476252      703.532 +- 199.193      9       good
chromium@476293      726.532 +- 246.331      9       good
chromium@476314      698.515 +- 216.646      14      good
chromium@476324      743.157 +- 341.302      14      good
chromium@476327      713.87 +- 153.67        6       good
chromium@476328      892.163 +- 28.4661      6       bad       <--
chromium@476329      881.266 +- 84.0088      14      bad
chromium@476334      874.898 +- 88.4962      14      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release_x64 --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=Daum loading.desktop

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8977507914496855840

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5904818964529152


| 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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