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Issue metadata

Status: Duplicate
Merged: issue 725949
Owner: ----
Closed: May 2017
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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2.7%-39.9% regression in smoothness.simple_mobile_sites at 473863:474010

Project Member Reported by briander...@chromium.org, May 26 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, May 27 2017

Mergedinto: 725949
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : sadrul
  Commit : a6251cb3214b42349e7208d285a5e2e01276fe6f
  Date   : Tue May 23 16:06:27 2017
  Subject: input: Dispatch synthesized events at regular intervals.

Bisect Details
  Configuration: android_nexus6_perf_bisect
  Benchmark    : smoothness.simple_mobile_sites
  Metric       : mean_input_event_latency/mean_input_event_latency
  Change       : 39.03% | 7.7022 -> 10.7080333333

Revision             Result                   N
chromium@473906      7.7022 +- 2.74061        6      good
chromium@473919      7.68523 +- 2.34778       6      good
chromium@473921      8.03163 +- 1.70599       6      good
chromium@473922      11.4073 +- 1.98099       6      bad       <--
chromium@473925      11.6721 +- 2.45619       6      bad
chromium@473931      11.2782 +- 1.9873        6      bad
chromium@473955      10.6482 +- 0.397533      6      bad
chromium@474004      10.708 +- 1.49249        6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests smoothness.simple_mobile_sites

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8978488791659276528

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5804216670486528


| 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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