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Issue metadata

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



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21.5% regression in smoothness.gpu_rasterization.top_25_smooth at 523365:523402

Project Member Reported by kraynov@chromium.org, Dec 14 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Dec 14 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=794882

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=b940e63d11c61e9c42308c3996505e47ada4d52960fc4c4162b6be9b7ee1943b


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

android-nexus5
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Dec 14 2017

Mergedinto: 794563
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Yutaka Hirano
  Commit : 47b8f2451e900fe2c5fc4d94046925f40fea2fc7
  Date   : Tue Dec 12 10:52:56 2017
  Subject: Update RendererSideResourceScheduler testing config

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : smoothness.gpu_rasterization.top_25_smooth
  Metric       : frame_times/Wordpress
  Change       : 21.10% | 16.9318137623 -> 20.5050477652

Revision             Result                    N
chromium@523364      16.9318 +- 0.138717       6      good
chromium@523383      16.9321 +- 0.127391       6      good
chromium@523393      16.902 +- 0.0914309       6      good
chromium@523395      16.9162 +- 0.0814547      6      good
chromium@523396      20.3696 +- 0.578975       6      bad       <--
chromium@523398      20.4638 +- 1.17897        6      bad
chromium@523402      20.505 +- 0.495477        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.gpu_rasterization.top_25_smooth

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8960239369178125888


For feedback, file a bug with component Speed>Bisection

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