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Issue metadata

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



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10%-13.8% regression in blink_perf.paint at 464603:464709

Project Member Reported by alexclarke@chromium.org, Apr 19 2017

Issue description

See the link to graphs below.
 
Project Member

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

Mergedinto: 712455
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : enne
  Commit : e594588348ea08e4cdc15dc587efa5645db5023e
  Date   : Fri Apr 14 07:42:34 2017
  Subject: Back PaintRecord with PaintOpBuffer instead of SkPicture

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : blink_perf.paint
  Metric       : paint-offset-changes/paint-offset-changes
  Change       : 8.48% | 2062.24191667 -> 2237.05016667

Revision             Result                  N
chromium@464694      2062.24 +- 37.1169      6      good
chromium@464698      2005.5 +- 21.6379       6      good
chromium@464700      2002.27 +- 24.8292      6      good
chromium@464701      2277.27 +- 81.314       6      bad       <--
chromium@464702      2299.51 +- 49.3305      6      bad
chromium@464709      2237.05 +- 28.4276      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 blink_perf.paint

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8981888482593565728

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5908271438757888


| 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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