All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=766560

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=730e1702f847b1c6b0af2c48783a51454458198a56e8d940c9a454a2a3cd2510


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

chromium-rel-mac11
chromium-rel-win7-dual
chromium-rel-win7-gpu-ati
chromium-rel-win7-gpu-intel
chromium-rel-win7-gpu-nvidia
chromium-rel-win7-x64-dual
chromium-rel-win8-dual
win-high-dpi

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8968030623057704016

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

Suspected Commit
  Author : clamy
  Commit : 0dbded05ad0ba1c3d8388fd649130509ab97f07a
  Date   : Fri Sep 15 14:44:08 2017
  Subject: Enable PlzNavigate on trunk

Bisect Details
  Configuration: win_x64_perf_bisect
  Benchmark    : loading.desktop
  Metric       : cpuTimeToFirstMeaningfulPaint_avg/pcv1-warm/ru.wikipedia
  Change       : 92.71% | 100.049777778 -> 197.8165

Revision             Result                  N
chromium@502230      100.05 +- 24.1872       9       good
chromium@502247      117.375 +- 91.5267      9       good
chromium@502250      99.1752 +- 18.7955      6       good
chromium@502251      198.698 +- 6.6912       6       bad       <--
chromium@502252      185.329 +- 96.6216      14      bad
chromium@502256      192.659 +- 29.1838      9       bad
chromium@502264      196.184 +- 85.6464      9       bad
chromium@502297      197.816 +- 95.7481      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=ru.wikipedia loading.desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8968030623057704016


For feedback, file a bug with component Speed>Bisection