All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=781817

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=3941d7af0b801fd5a36c49fcc79868cbd98ac9670e24cc309ed82c5120642c18


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

android-nexus5
android-nexus5X
android-nexus7v2
android-webview-nexus5X
android-webview-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8963658854149277968

=== 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_nexus5_perf_bisect
  Benchmark    : blink_perf.bindings
  Metric       : structured-clone-json-deserialize/structured-clone-json-deserialize
  Change       : 36.29% | 123.307453333 -> 168.056416667

Revision                           Result                  N
chromium@513605                    123.307 +- 3.78447      6      good
chromium@513663                    129.874 +- 3.62066      6      good
chromium@513692                    130.967 +- 3.20475      6      good
chromium@513707                    138.516 +- 4.69712      6      good
chromium@513714                    135.962 +- 4.23149      6      good
chromium@513718                    140.514 +- 3.19141      6      good
chromium@513719                    141.615 +- 3.26432      6      good
chromium@513719,v8@a274fc6536      131.888 +- 2.76682      6      good
chromium@513719,v8@694a18781c      131.234 +- 1.35525      6      good
chromium@513719,v8@586067e45d      164.961 +- 7.19995      6      bad       <--
chromium@513720                    166.609 +- 8.40742      6      bad
chromium@513721                    168.056 +- 7.43986      6      bad

Please refer to the following doc on diagnosing blink_perf regressions:
  https://chromium.googlesource.com/chromium/src/+/master/docs/speed/benchmark_harnesses/blink_perf.md

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 blink_perf.bindings

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8963658854149277968


For feedback, file a bug with component Speed>Bisection