All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=754625

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=5b2e1dbac1729423addf3c80343cf5fbfb2262fb8d85f328201fb2e4f93a50c5


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

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

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8971565022199907744

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

Suspected Commit
  Author : Ulan Degenbaev
  Commit : feb3ee40d03137ffcc2be98a01f6ea936cdf45e1
  Date   : Mon Aug 07 16:21:24 2017
  Subject: [heap] Disable parallel scavenge.

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : v8.runtimestats.browsing_mobile
  Metric       : v8-gc-scavenger_max/browse_shopping/browse_shopping_avito
  Change       : 102.69% | 42.8516666667 -> 86.8581666667

Revision                           Result                  N
chromium@492419                    42.8517 +- 13.0249      6      good
chromium@492444                    42.7653 +- 7.65061      6      good
chromium@492444,v8@a7a166e30c      38.7115 +- 13.7118      6      good
chromium@492444,v8@ceb55494bd      43.279 +- 9.8044        6      good
chromium@492444,v8@feb3ee40d0      84.132 +- 14.9498       6      bad       <--
chromium@492444,v8@864837ff3c      90.7492 +- 19.0175      6      bad
chromium@492445                    84.9357 +- 18.7442      6      bad
chromium@492446                    85.0422 +- 20.9553      6      bad
chromium@492447                    78.7453 +- 35.0356      6      bad
chromium@492450                    89.9457 +- 27.4982      6      bad
chromium@492456                    87.102 +- 42.3458       6      bad
chromium@492468                    96.4508 +- 23.2942      6      bad
chromium@492517                    86.8582 +- 16.9603      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=browse.shopping.avito v8.runtimestats.browsing_mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8971565022199907744


For feedback, file a bug with component Speed>Bisection