All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=758233

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=a32e2d2e4c73f2bac7854d9537b58c393cda0aebc82909084ebeba8b72bf8f64


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

chromium-rel-mac-retina

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970455116107517520

=== BISECT JOB RESULTS ===
NO Perf regression found

Bisect Details
  Configuration: mac_retina_perf_bisect
  Benchmark    : loading.desktop
  Metric       : cpuTimeToFirstMeaningfulPaint_avg/pcv1-cold/NatGeo

Revision             Result                  N
chromium@494990      122.077 +- 23.1448      21      good
chromium@495262      123.27 +- 27.032        21      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=NatGeo loading.desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970455116107517520


For feedback, file a bug with component Speed>Bisection

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970434161556883040

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

Suspected Commit
  Author : Greg Kerr
  Commit : 9705b7aaabf4c81d4e9cb13174338df9bde61cc4
  Date   : Tue Aug 15 19:42:42 2017
  Subject: Enable Finch Trial Test for MacV2Sandbox.

Bisect Details
  Configuration: mac_retina_perf_bisect
  Benchmark    : loading.desktop
  Metric       : timeToFirstMeaningfulPaint_avg/pcv1-cold/amazon.co.jp
  Change       : 15.52% | 415.993214286 -> 480.567142857

Revision             Result                  N
chromium@494032      415.993 +- 243.6        14      good
chromium@494340      416.078 +- 150.75       9       good
chromium@494494      414.987 +- 125.957      9       good
chromium@494499      418.023 +- 175.805      9       good
chromium@494501      411.6 +- 129.932        9       good
chromium@494502      463.082 +- 127.231      9       bad       <--
chromium@494504      458.855 +- 115.149      9       bad
chromium@494514      462.034 +- 125.168      9       bad
chromium@494533      460.707 +- 119.597      9       bad
chromium@494571      460.388 +- 108.465      9       bad
chromium@494647      461.193 +- 135.633      14      bad
chromium@495262      480.567 +- 203.592      14      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=amazon.co.jp loading.desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970434161556883040


For feedback, file a bug with component Speed>Bisection