All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=783628

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=4ab3a9a7644f3fe4827f10e763931adf50ff2f19a7dde9b7fee5dfb679c26f0e


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

android-nexus5X
android-nexus6
android-nexus7v2
android-one

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8963323531168790496

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

Suspected Commit
  Author : Ulan Degenbaev
  Commit : 6bb1d47e6e82f75ead36cdab209afc5dafa8329c
  Date   : Tue Nov 07 13:11:10 2017
  Subject: [heap] Re-enable concurrent marking.

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : thread_times.key_silk_cases
  Metric       : thread_other_cpu_time_per_frame/inbox_app.html?toggle_drawer
  Change       : 79.59% | 0.336035310447 -> 0.603473785097

Revision                           Result                     N
chromium@514561                    0.336035 +- 0.0266633      6      good
chromium@514614                    0.31948 +- 0.0442949       6      good
chromium@514640                    0.33056 +- 0.0217239       6      good
chromium@514641                    0.321637 +- 0.0361311      6      good
chromium@514641,v8@67d543ec31      0.33044 +- 0.0376367       6      good
chromium@514641,v8@6bb1d47e6e      0.60142 +- 0.0503942       6      bad       <--
chromium@514641,v8@ac0661b358      0.600491 +- 0.0373021      6      bad
chromium@514641,v8@80cb266c75      0.610813 +- 0.052539       6      bad
chromium@514642                    0.591333 +- 0.0497083      6      bad
chromium@514644                    0.599233 +- 0.0581828      6      bad
chromium@514647                    0.616927 +- 0.047924       6      bad
chromium@514653                    0.615867 +- 0.0798908      6      bad
chromium@514666                    0.606436 +- 0.0409758      6      bad
chromium@514771                    0.603474 +- 0.0489488      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=inbox.app.html.toggle.drawer 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/8963323531168790496


For feedback, file a bug with component Speed>Bisection