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Issue metadata

Status: Duplicate
Merged: issue 708641
Owner: ----
Closed: Apr 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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1.8%-36.2% regression in smoothness.sync_scroll.key_mobile_sites_smooth at 460330:464322

Project Member Reported by benhenry@google.com, Apr 17 2017

Issue description

Graphs coming.
 
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Apr 18 2017

Mergedinto: 708641
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : chongz
  Commit : 232fbc4bc87a4c35ea8ab60e1f7ff8e4e8e14de5
  Date   : Fri Mar 31 20:14:35 2017
  Subject: Revert of Enable VsyncAlignedInput to Field Trial (patchset #1 id:40001 of https://codereview.chromium.org/2752363002/ )

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : smoothness.sync_scroll.key_mobile_sites_smooth
  Metric       : mean_input_event_latency/Wordpress
  Change       : 42.70% | 12.868 -> 18.3621666667

Revision             Result                  N
chromium@460329      12.868 +- 2.71977       6      good
chromium@460818      15.6882 +- 1.9121       6      good
chromium@461062      13.1397 +- 2.01517      6      good
chromium@461184      14.3047 +- 1.34143      6      good
chromium@461200      15.1383 +- 3.01428      6      good
chromium@461201      15.6108 +- 0.66039      6      good
chromium@461202      18.4767 +- 3.95711      6      bad       <--
chromium@461204      18.095 +- 2.29243       6      bad
chromium@461208      19.8223 +- 4.85124      6      bad
chromium@461215      19.6747 +- 3.97322      6      bad
chromium@461245      20.1077 +- 4.26103      6      bad
chromium@461306      18.886 +- 3.25068       6      bad
chromium@462283      20.0512 +- 5.71618      6      bad
chromium@464322      18.3622 +- 2.91878      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=Wordpress smoothness.sync_scroll.key_mobile_sites_smooth

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8982027987531866272

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5810688171180032


| 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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