All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=729631

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDghq_QswsM


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

android-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8977606396784663504

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

Suspected Commit
  Author : hpayer
  Commit : 502c6ae6a03979efbd3e006e6a0b8c3369ca2bbc
  Date   : Fri Jun 02 09:40:16 2017
  Subject: [heap] Activate memory reducer on external memory activity.

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : v8.runtimestats.browsing_mobile
  Metric       : IC:duration_avg/browse_social/browse_social_instagram
  Change       : 13.94% | 439.353166667 -> 500.594166667

Revision                           Result                  N
chromium@476615                    439.353 +- 14.708       6      good
chromium@476636                    442.042 +- 6.71561      6      good
chromium@476647                    451.301 +- 10.8953      6      good
chromium@476652                    446.704 +- 5.12268      6      good
chromium@476655                    447.808 +- 5.52298      6      good
chromium@476656                    448.043 +- 7.39116      6      good
chromium@476656,v8@d1a9603e57      448.289 +- 11.9381      6      good
chromium@476656,v8@502c6ae6a0      502.533 +- 15.75        6      bad       <--
chromium@476656,v8@3b7ff7a5e5      504.69 +- 6.9879        6      bad
chromium@476657                    495.812 +- 21.7751      6      bad
chromium@476698                    500.594 +- 20.0008      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.instagram v8.runtimestats.browsing_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8977606396784663504

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5557029357223936


| O O | Visit http://www.chromium.org/developers/speed-infra/perf-bug-faq
|  X  | for more information addressing perf regression bugs. For feedback,
| / \ | file a bug with component Speed>Bisection.  Thank you!