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Issue metadata

Status: Duplicate
Merged: issue 729769
Owner: ----
Closed: Jun 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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4.3% regression in loading.desktop at 476526:476615

Project Member Reported by m...@chromium.org, Jun 5 2017

Issue description

See the link to graphs below.
 

Comment 1 by m...@chromium.org, Jun 5 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=729782

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgpqKaowoM


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

chromium-rel-win7-dual
Mergedinto: 729769
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : yzshen
  Commit : 2d8fb42490681813d05294e44166615c03a6aaff
  Date   : Thu Jun 01 20:29:40 2017
  Subject: This CL:

Bisect Details
  Configuration: win_perf_bisect
  Benchmark    : loading.desktop
  Metric       : timeToFirstMeaningfulPaint_avg/pcv1-warm/IndiaTimes
  Change       : 6.41% | 864.194 -> 919.619666667

Revision             Result                  N
chromium@476131      864.194 +- 30.3747      6      good
chromium@476289      857.481 +- 19.9132      6      good
chromium@476368      851.518 +- 21.6255      6      good
chromium@476407      857.55 +- 32.2202       6      good
chromium@476412      863.719 +- 41.3763      6      good
chromium@476413      869.341 +- 23.7868      6      good
chromium@476414      918.636 +- 24.4168      6      bad       <--
chromium@476415      909.198 +- 14.5177      6      bad
chromium@476417      906.272 +- 14.3918      6      bad
chromium@476427      916.731 +- 30.4885      6      bad
chromium@476446      912.337 +- 24.2624      6      bad
chromium@476760      919.62 +- 26.6521       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=IndiaTimes loading.desktop

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8977585767536520496

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6182447126937600


| 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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