All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=777822

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=14bc18afd1c22f0fd74462542b5f5860e7c7323e13b101c331bb8f6336fdd43f


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

android-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8964855735290544736

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

Suspected Commit
  Author : Hajime Hoshi
  Commit : 1b8485c6d66e754d5fd729d636e5d1c50a261e21
  Date   : Tue Oct 17 09:52:33 2017
  Subject: Revert "Revert "Add RendererSchedulerImpl::V8TaskQueue()""

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : v8.runtimestats.browsing_mobile
  Metric       : v8-gc-memory-mark-compactor_sum/browse_social/browse_social_tumblr_infinite_scroll
  Change       : 56.68% | 33.8265555556 -> 53.8466666667

Revision             Result                  N
chromium@509315      33.8266 +- 10.0279      9       good
chromium@509329      37.6623 +- 10.7251      9       good
chromium@509337      34.396 +- 9.63102       9       good
chromium@509338      35.9413 +- 13.5088      11      good
chromium@509339      58.0485 +- 21.4975      4       bad       <--
chromium@509341      48.5163 +- 8.71267      4       bad
chromium@509344      51.9506 +- 50.9722      9       bad
chromium@509373      53.8467 +- 24.6187      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.social.tumblr.infinite.scroll 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/8964855735290544736


For feedback, file a bug with component Speed>Bisection