All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=744741

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=57370162518f2732c836aff9c3ffa511696a138de5117c3f187faad047a9c577


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

android-webview-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8973798420398292048

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

Suspected Commit
  Author : Sunny Sachanandani
  Commit : 057d5553e4524a7726b2e7d5ecfef85289379000
  Date   : Fri Jul 14 04:07:29 2017
  Subject: cc: Dump more state in begin main frame hang crash key.

Bisect Details
  Configuration: android_webview_arm64_aosp_perf_bisect
  Benchmark    : thread_times.simple_mobile_sites
  Metric       : thread_renderer_compositor_cpu_time_per_frame/thread_renderer_compositor_cpu_time_per_frame
  Change       : 9.87% | 2.99049868266 -> 3.28578084621

Revision             Result                    N
chromium@486648      2.9905 +- 0.10802         6      good
chromium@486664      3.00985 +- 0.146688       5      good
chromium@486668      3.01854 +- 0.129398       8      good
chromium@486669      2.98449 +- 0.107764       8      good
chromium@486670      3.31434 +- 0.0996976      7      bad       <--
chromium@486672      3.32429 +- 0.0569078      6      bad
chromium@486680      3.31289 +- 0.0748075      6      bad
chromium@486713      3.29832 +- 0.0684987      5      bad
chromium@486778      3.28578 +- 0.0234473      7      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 thread_times.simple_mobile_sites

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8973798420398292048


For feedback, file a bug with component Speed>Bisection