All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=782798

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=d2f60e063b2bdef6aeb54fe224ec9b0158322e2b8214bff8ab40ff14ba4f9d16


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

android-one

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8963468944932265088

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

Suspected Commit
  Author : Ulan Degenbaev
  Commit : 586067e45dd542a117b67ad66d3b14475d8d571f
  Date   : Thu Nov 02 19:10:00 2017
  Subject: Reland "[heap] Temporarily disable concurrent marking."

Bisect Details
  Configuration: android_one_perf_bisect
  Benchmark    : smoothness.tough_canvas_cases
  Metric       : frame_times/tough_canvas_cases_rendering_throughput_put_get_image_data.html
  Change       : 13.57% | 158.554944182 -> 180.071255163

Revision                           Result                  N
chromium@513664                    158.555 +- 5.99253      6       good
chromium@513697                    159.5 +- 7.19732        6       good
chromium@513713                    161.194 +- 2.62234      6       good
chromium@513717                    161.285 +- 8.1733       9       good
chromium@513719                    162.947 +- 8.35253      9       good
chromium@513719,v8@a274fc6536      161.894 +- 4.5514       6       good
chromium@513719,v8@694a18781c      161.502 +- 3.98739      6       good
chromium@513719,v8@586067e45d      166.818 +- 8.25856      14      bad       <--
chromium@513720                    167.987 +- 5.56578      9       bad
chromium@513721                    167.495 +- 5.61387      9       bad
chromium@513729                    167.895 +- 5.48168      6       bad
chromium@513794                    180.071 +- 17.448       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=tough.canvas.cases.rendering.throughput.put.get.image.data.html smoothness.tough_canvas_cases

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8963468944932265088


For feedback, file a bug with component Speed>Bisection