All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=769719

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=049d39c9b40295427233f197bbf0fa1be8a66612025bc9c56ef75f14a4f7471d


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

android-nexus5X
android-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8967202961098423536

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

Suspected Commit
  Author : xunjieli
  Commit : 724bb776bcdea642a5bc9cc20fe14bb0282b4900
  Date   : Wed Sep 06 14:29:20 2017
  Subject: [Telemetry] Use --ignore-certificate-errors-spki-list to bypass cert errors

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : v8.runtimestats.browsing_mobile
  Metric       : Parse:duration_avg/browse_social/browse_social_twitter
  Change       : 28.03% | 113.0195 -> 144.698833333

Revision                                 Result                  N
chromium@500323                          113.02 +- 20.8419       6      good
chromium@500334                          113.546 +- 18.2262      6      good
chromium@500340                          112.012 +- 19.3144      6      good
chromium@500343                          110.306 +- 21.4528      6      good
chromium@500344                          110.884 +- 13.4749      6      good
chromium@500344,catapult@c5a474f50f      111.01 +- 11.7712       6      good
chromium@500344,catapult@724bb776bc      145.501 +- 7.2408       6      bad       <--
chromium@500344,catapult@80c47581b1      141.16 +- 11.6102       6      bad
chromium@500344,catapult@4f611510b9      145.915 +- 18.3548      6      bad
chromium@500344,catapult@442f46edf7      138.925 +- 13.2603      6      bad
chromium@500345                          143.034 +- 18.1246      6      bad
chromium@500367                          140.666 +- 20.1536      6      bad
chromium@500410                          145.448 +- 30.803       6      bad
chromium@500497                          144.699 +- 11.115       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.twitter 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/8967202961098423536


For feedback, file a bug with component Speed>Bisection