All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=758851

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=705229837971e8212812b6301bcf16f93c82b79f284f313d604b05b142fe19d4


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

chromium-rel-mac12-mini-8gb
chromium-rel-win7-dual
chromium-rel-win7-gpu-intel
chromium-rel-win7-gpu-nvidia
chromium-rel-win7-x64-dual
chromium-rel-win8-dual

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970304446145042368

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

Suspected Commit
  Author : Michael Hablich
  Commit : af91eb85de58d9205f029da39662740ca7c222f2
  Date   : Wed Aug 23 10:18:57 2017
  Subject: Version 6.2.337.1 (cherry-pick)

Bisect Details
  Configuration: mac_10_12_mini_8gb_perf_bisect
  Benchmark    : v8.browsing_desktop
  Metric       : v8-gc-total_avg/browse_media/browse_media_imgur
  Change       : 216.89% | 1.03507211392 -> 3.2800200205

Revision                           Result                    N
chromium@496636                    1.03507 +- 0.371701       6      good
chromium@496655                    0.95476 +- 0.261866       6      good
chromium@496660                    0.928369 +- 0.107497      6      good
chromium@496661                    0.930632 +- 0.205086      6      good
chromium@496661,v8@af91eb85de      3.05978 +- 0.795122       6      bad       <--
chromium@496662                    3.26102 +- 0.955001       6      bad
chromium@496663                    3.02203 +- 0.915151       6      bad
chromium@496665                    2.97783 +- 0.844607       6      bad
chromium@496674                    3.28002 +- 1.27771        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=browse.media.imgur v8.browsing_desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970304446145042368


For feedback, file a bug with component Speed>Bisection