All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=757330

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=720d7b260da41f6d74f7580cc0a2445384f12124b8e90ab0b8096f73db0ab17c


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

android-nexus5X
android-nexus7v2
chromium-rel-mac11
chromium-rel-mac11-pro
chromium-rel-win7-dual

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970675722029378912

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

Suspected Commit
  Author : Jakob Kummerow
  Commit : 05e862f78398d8bbeacc7f9e19bbb41c408e709b
  Date   : Fri Aug 04 01:27:42 2017
  Subject: Cache StoreIC-Transition handlers

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : media.android.tough_video_cases_tbmv2
  Metric       : memory:chrome:all_processes:reported_by_chrome:v8:effective_size_avg/video.html?src_tulip2.vp9.webm_background
  Change       : 1.25% | 2202348.0 -> 2229804.0

Revision                           Result                  N
chromium@492049                    2202348 +- 0.0          6      good
chromium@492127                    2202348 +- 0.0          6      good
chromium@492147                    2202348 +- 0.0          6      good
chromium@492157                    2202348 +- 0.0          6      good
chromium@492160                    2202348 +- 0.0          6      good
chromium@492161                    2202351 +- 14.6059      6      good
chromium@492161,v8@5614747680      2202348 +- 0.0          6      good
chromium@492161,v8@2fd5e70a03      2205845 +- 15190.2      6      good
chromium@492161,v8@9735d7f109      2203072 +- 0.0          6      good
chromium@492161,v8@0caf1d2029      2200928 +- 0.0          6      good
chromium@492161,v8@05e862f783      2228484 +- 0.0          6      bad       <--
chromium@492162                    2229804 +- 0.0          6      bad
chromium@492166                    2229804 +- 0.0          6      bad
chromium@492205                    2229804 +- 0.0          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=video.html.src.tulip2.vp9.webm.background media.android.tough_video_cases_tbmv2

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970675722029378912


For feedback, file a bug with component Speed>Bisection