All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=757733

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=dae4c02d07a396b7787bd093ec45795cd57fc34262ada715d113d79344ae6a8b


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

chromium-rel-mac-retina

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970576593596537568

=== 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: mac_retina_perf_bisect
  Benchmark    : media.tough_video_cases_tbmv2
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:heap:effective_size_avg/video.html?src_garden2_10s.webm
  Change       : 1.71% | 3390749.33333 -> 3448616.0

Revision                           Result                  N
chromium@490934                    3390749 +- 1394.79      6      good
chromium@491948                    3397093 +- 3692.55      6      good
chromium@492075                    3398148 +- 5431.43      6      good
chromium@492139                    3397880 +- 4819.91      6      good
chromium@492155                    3398971 +- 5285.44      6      good
chromium@492159                    3396989 +- 4328.92      6      good
chromium@492161                    3397640 +- 4784.19      6      good
chromium@492161,v8@5614747680      3403903 +- 26345.1      6      good
chromium@492161,v8@2fd5e70a03      3406743 +- 23166.6      6      good
chromium@492161,v8@9735d7f109      3402436 +- 1191.96      6      good
chromium@492161,v8@0caf1d2029      3402203 +- 1150.76      6      good
chromium@492161,v8@05e862f783      3429087 +- 1204.39      6      bad       <--
chromium@492162                    3429693 +- 780.864      6      bad
chromium@492163                    3429744 +- 734.869      5      bad
chromium@492171                    3429863 +- 958.093      6      bad
chromium@492202                    3438788 +- 29081.2      6      bad
chromium@492455                    3431697 +- 1329.9       6      bad
chromium@492962                    3431499 +- 845.178      6      bad
chromium@494990                    3448616 +- 25194.4      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=video.html.src.garden2.10s.webm media.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/8970576593596537568


For feedback, file a bug with component Speed>Bisection