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Issue metadata

Status: Duplicate
Merged: issue 725949
Owner: ----
Closed: May 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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2.7%-120.1% regression in smoothness.top_25_smooth at 473841:474040

Project Member Reported by briander...@chromium.org, May 26 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, May 27 2017

Mergedinto: 725949
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : sadrul
  Commit : a6251cb3214b42349e7208d285a5e2e01276fe6f
  Date   : Tue May 23 16:06:27 2017
  Subject: input: Dispatch synthesized events at regular intervals.

Bisect Details
  Configuration: android_one_perf_bisect
  Benchmark    : smoothness.top_25_smooth
  Metric       : mean_input_event_latency/Wikipedia (1 tab)
  Change       : 103.46% | 7.78233333333 -> 15.8338333333

Revision             Result                   N
chromium@473893      7.78233 +- 0.312831      6      good
chromium@473910      7.8225 +- 0.356908       6      good
chromium@473919      7.745 +- 0.236102        6      good
chromium@473921      7.78067 +- 0.222318      6      good
chromium@473922      17.0838 +- 2.71259       6      bad       <--
chromium@473923      18.0915 +- 3.30344       6      bad
chromium@473927      17.2027 +- 3.79935       6      bad
chromium@473961      17.2275 +- 2.81527       6      bad
chromium@474029      15.8338 +- 2.3369        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=Wikipedia..1.tab. smoothness.top_25_smooth

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8978488831764739680

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5867559921909760


| 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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