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Issue 762210 link

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Issue metadata

Status: Duplicate
Merged: issue 759554
Owner: ----
Closed: Sep 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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2.4% regression in smoothness.gpu_rasterization.top_25_smooth at 497465:497661

Project Member Reported by briander...@chromium.org, Sep 5 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=762210

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=5f3d6a289ebe2405d9b37e4b3cd75f9eb328b68a541fb3dedbf6cdfc1b4cfde8


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

android-nexus6
Mergedinto: 759554
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Sunny Sachanandani
  Commit : 9b8fb34db903643b759635086dcf0da90b1e3082
  Date   : Sat Aug 26 00:49:56 2017
  Subject: gpu: Command buffer multi flush.

Bisect Details
  Configuration: android_nexus6_perf_bisect
  Benchmark    : smoothness.gpu_rasterization.top_25_smooth
  Metric       : frame_times/Docs  (1 open document tab)
  Change       : 2.06% | 16.9932571305 -> 17.3437698375

Revision             Result                    N
chromium@497464      16.9933 +- 0.171719       6      good
chromium@497563      16.9918 +- 0.124296       6      good
chromium@497612      16.8956 +- 0.0889016      6      good
chromium@497614      16.9396 +- 0.110853       6      good
chromium@497615      17.3437 +- 0.307557       6      bad       <--
chromium@497616      17.3108 +- 0.150664       6      bad
chromium@497619      17.3703 +- 0.212736       6      bad
chromium@497625      17.3512 +- 0.126517       6      bad
chromium@497637      17.279 +- 0.426704        6      bad
chromium@497661      17.3438 +- 0.147519       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=Docs...1.open.document.tab. 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/8969256370255740496


For feedback, file a bug with component Speed>Bisection

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