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Issue 797424 link

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Issue metadata

Status: Duplicate
Merged: issue 797426
Owner: ----
Closed: Dec 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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1.6%-2.4% regression in smoothness.key_mobile_sites_smooth at 525690:525783

Project Member Reported by briander...@chromium.org, Dec 22 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Dec 22 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=797424

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=9ff54fcdbb2be82e04077fe5c17f70dbb71930da03d95a58f63bf146b8148c7c


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

android-nexus5
android-nexus6
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Dec 23 2017

Mergedinto: 797426
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : James Wallace-Lee
  Commit : aefa586e7c8a20173fac5a4b8dfa301f8460e852
  Date   : Thu Dec 21 16:40:07 2017
  Subject: cc: don't ProcessScheduledActions inside BeginImplFrame

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : smoothness.key_mobile_sites_smooth
  Metric       : frame_times/http___slashdot.org_
  Change       : 1.39% | 17.0047792225 -> 17.2415969433

Revision             Result                    N
chromium@525689      17.0048 +- 0.10807        6      good
chromium@525701      17.021 +- 0.25779         9      good
chromium@525707      16.9757 +- 0.0876394      6      good
chromium@525710      16.9992 +- 0.207339       6      good
chromium@525712      16.9508 +- 0.102997       6      good
chromium@525713      17.2212 +- 0.200364       6      bad       <--
chromium@525736      17.3049 +- 0.224889       6      bad
chromium@525783      17.2416 +- 0.174624       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=http...slashdot.org. 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/8959470462577622976


For feedback, file a bug with component Speed>Bisection

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