All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=758215

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=e4e46a4c2a715d617d772b92cf12c6e601884c0d59b5168ac2ef3533382c952c


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

chromium-rel-mac-retina

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970458470258476112

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

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

Revision             Result                  N
chromium@494990      264.427 +- 87.9761      21      good
chromium@495262      255.924 +- 40.0305      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=REI loading.desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970458470258476112


For feedback, file a bug with component Speed>Bisection

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970450609393159056

Tried a bisect on a wider range.

=== 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/Taobao
  Change       : 9.94% | 228.886 -> 251.645428571

Revision             Result                  N
chromium@494342      228.886 +- 73.0647      14      good
chromium@494481      225.773 +- 38.9594      9       good
chromium@494499      230.594 +- 21.8416      6       good
chromium@494501      226.245 +- 40.0221      9       good
chromium@494502      257.248 +- 43.028       9       bad       <--
chromium@494504      277.697 +- 215.892      9       bad
chromium@494508      253.567 +- 25.7758      9       bad
chromium@494516      253.746 +- 30.7005      9       bad
chromium@494550      252.751 +- 32.6416      9       bad
chromium@494619      256.545 +- 37.3052      9       bad
chromium@494896      253.026 +- 31.9239      9       bad
chromium@495450      251.645 +- 59.7827      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=Taobao loading.desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970450609393159056


For feedback, file a bug with component Speed>Bisection