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Issue 766543 link

Starred by 1 user
Status: Duplicate
Merged: issue 766541
Owner: ----
Closed: Sep 2017
Cc:
█ alexclarke@chromium.org
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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32.2%-45.3% regression in smoothness.key_mobile_sites_smooth at 501774:501943

Project Member Reported by alexclarke@chromium.org, Sep 19 2017 
See the link to graphs below.
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Sep 19 2017 

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=766543

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=d4fe873f4202d28d40b71ae2bce5c2a894b2bf8e49e51cc36f2b0b6bee5346d0


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

android-nexus5
android-nexus7v2
android-one
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Sep 19 2017

Mergedinto: 766541
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Timothy Loh
  Commit : e1ef417340c9ebfe3613c90b636f74f96c9efc4b
  Date   : Thu Sep 14 03:31:59 2017
  Subject: Enable modal permission prompts on android

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : smoothness.key_mobile_sites_smooth
  Metric       : frame_times/https___www.google.co.uk_search?hl_en_q_barack+obama_cad_h
  Change       : 44.10% | 18.4486372451 -> 26.5845387773

Revision             Result                  N
chromium@501773      18.4486 +- 0.96287      6      good
chromium@501858      18.4991 +- 0.72888      6      good
chromium@501859      26.1549 +- 2.39461      6      bad       <--
chromium@501860      26.1255 +- 1.48939      6      bad
chromium@501861      25.5533 +- 1.92184      6      bad
chromium@501864      27.0345 +- 1.77952      6      bad
chromium@501869      26.202 +- 2.55109       6      bad
chromium@501880      26.3653 +- 1.5834       6      bad
chromium@501901      26.2749 +- 3.19309      6      bad
chromium@501943      26.5845 +- 1.2512       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 --story-filter=https...www.google.co.uk.search.hl.en.q.barack.obama.cad.h smoothness.key_mobile_sites_smooth

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8968030872907104816


For feedback, file a bug with component Speed>Bisection
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