All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=741914

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=04411e7b241995dc64cff5c3651e48c0e92f1a92594ea1ee8d55c177144599dc


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

chromium-rel-win7-gpu-ati

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8974235546491544768

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

Suspected Commit
  Author : Marc Treib
  Commit : da2086682fef5cc44b539dc4bdc63af380e2988b
  Date   : Tue Jul 11 09:16:07 2017
  Subject: Fieldtrial testing config for CaptureThumbnailOnLoadFinished

Bisect Details
  Configuration: winx64ati_perf_bisect
  Benchmark    : media.tough_video_cases_tbmv2
  Metric       : memory:chrome:all_processes:reported_by_chrome:gpu:effective_size_avg/video.html?src_tulip2.ogg_type_audio_seek
  Change       : 32.29% | 13099657.3333 -> 17329137.3333

Revision             Result                   N
chromium@485549      13099657 +- 1519403      6      good
chromium@485565      13047485 +- 321297       6      good
chromium@485567      13047581 +- 321060       6      good
chromium@485568      17465757 +- 829967       6      bad       <--
chromium@485569      17154471 +- 1196624      6      bad
chromium@485573      17285447 +- 302698       6      bad
chromium@485581      17465757 +- 829967       6      bad
chromium@485612      17329137 +- 239304       6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release_x64 --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=video.html.src.tulip2.ogg.type.audio.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/8974235546491544768


For feedback, file a bug with component Speed>Bisection