All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=798824

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=cb50f03f51e0b3ccb74385780bd87e936beaf3bfcfae295d33ea33aa7aae2a89


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

android-webview-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8958388372344952000

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

Suspected Commit
  Author : Chris Harrelson
  Commit : a3e4477c29d087d3708dbcb4dc5a90985c2b45e3
  Date   : Tue Dec 05 01:51:58 2017
  Subject: [PE] Turn on half-width tiles for all platforms and devices.

Bisect Details
  Configuration: android_webview_arm64_aosp_perf_bisect
  Benchmark    : thread_times.key_silk_cases
  Metric       : thread_GPU_cpu_time_per_frame/http___jsfiddle.net_jx5De_14_show_
  Change       : 58.29% | 4.14694402961 -> 6.56403443526

Revision             Result                   N
chromium@521550      4.14694 +- 0.773907      6      good
chromium@521580      4.04668 +- 0.674786      6      good
chromium@521584      4.15083 +- 0.701141      6      good
chromium@521585      4.00855 +- 0.592204      6      good
chromium@521586      6.66938 +- 0.991825      6      bad       <--
chromium@521588      6.76542 +- 0.44086       6      bad
chromium@521595      6.83353 +- 0.563724      6      bad
chromium@521609      6.56403 +- 0.542158      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-webview --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=http...jsfiddle.net.jx5De.14.show. thread_times.key_silk_cases

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8958388372344952000


For feedback, file a bug with component Speed>Bisection