All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=758971

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=2683b51a83f1ba34ea90c8f71a4f919fde5c0154be5266aab731476cd0681488


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

android-nexus7v2

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970285692967081152

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

Suspected Commit
  Author : Pavel Feldman
  Commit : 9ce7836fdec98fde42fc61347c4161077dbea0fc
  Date   : Wed Aug 23 07:07:21 2017
  Subject: DevTools: introduce lifecycle events reported over the page domain.

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : system_health.common_mobile
  Metric       : timeToFirstMeaningfulPaint_avg/browse_media/browse_media_imgur
  Change       : 216.76% | 388.971666667 -> 1232.10166667

Revision             Result                  N
chromium@495848      388.972 +- 63.053       6      good
chromium@496258      436.854 +- 99.9892      6      good
chromium@496463      418.91 +- 42.7799       6      good
chromium@496565      431.829 +- 62.8829      6      good
chromium@496591      401.143 +- 76.3555      6      good
chromium@496604      406.103 +- 89.0281      6      good
chromium@496606      441.544 +- 34.712       6      good
chromium@496607      1186.54 +- 369.845      6      bad       <--
chromium@496610      1285.79 +- 47.0113      6      bad
chromium@496616      1087.98 +- 713.09       6      bad
chromium@496667      1232.1 +- 352.687       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.media.imgur system_health.common_mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970285692967081152


For feedback, file a bug with component Speed>Bisection