All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=798342

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=411cb12e95630dbfb37f2ab040ce314efa608902b099cb21ec81c35f87ed9eab


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

android-nexus6
android-nexus7v2

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8958517524642202400

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

Suspected Commit
  Author : Xianzhu Wang
  Commit : 1de7bf475012870fbc4cb27aac5f2206444f5fe3
  Date   : Sat Dec 23 01:10:14 2017
  Subject: [SPv175+] Cache fragmented display items and paint chunks

Bisect Details
  Configuration: android_nexus6_perf_bisect
  Benchmark    : smoothness.tough_animation_cases
  Metric       : frame_times/balls_css_transition_all_properties.html
  Change       : 14.97% | 95.0266211201 -> 109.255518299

Revision             Result                  N
chromium@525983      95.0266 +- 2.46527      6      good
chromium@526066      96.5039 +- 2.87185      6      good
chromium@526108      95.3241 +- 1.64124      6      good
chromium@526114      95.359 +- 1.20481       6      good
chromium@526117      95.6116 +- 1.72386      6      good
chromium@526118      110.149 +- 2.64755      6      bad       <--
chromium@526119      109.229 +- 2.94035      6      bad
chromium@526129      111.202 +- 2.47493      6      bad
chromium@526149      109.256 +- 2.21897      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=balls.css.transition.all.properties.html smoothness.tough_animation_cases

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8958517524642202400


For feedback, file a bug with component Speed>Bisection