All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=757321

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=489f074a9451b1dcea547fc629c772ebd02d3e1570041c2bdd0d5ac56cd99596


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

chromium-rel-mac-retina
chromium-rel-mac11

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970676140520454896

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

Suspected Commit
  Author : Fredrik Hubinette
  Commit : 46c25f4aeea8ba4487d9104b0b7034c40631cbec
  Date   : Sat Aug 12 00:27:30 2017
  Subject: Revert "Add test and fixes for loading many videos on the same page."

Bisect Details
  Configuration: mac_10_11_perf_bisect
  Benchmark    : media.tough_video_cases_tbmv2
  Metric       : memory:chrome:all_processes:reported_by_chrome:v8:effective_size_avg/video.html?src_garden2_10s.mp4_seek
  Change       : 18.16% | 3464598.66667 -> 4093626.66667

Revision             Result                  N
chromium@493879      3464599 +- 1432.89      6      good
chromium@493890      3464267 +- 1685.05      6      good
chromium@493896      3500689 +- 199073       6      good
chromium@493897      4053649 +- 3066.84      6      bad       <--
chromium@493898      4057856 +- 24393.1      6      bad
chromium@493899      4053517 +- 3004.29      6      bad
chromium@493901      4102633 +- 204108       6      bad
chromium@493922      4054052 +- 2532.67      6      bad
chromium@493964      4093627 +- 218334       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.mp4.seek 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/8970676140520454896


For feedback, file a bug with component Speed>Bisection