All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=766567

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=df609eb7359ad41bc10b471ee2960db25999631fbe711bdc033c850015449612


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

chromium-rel-win10

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8968030536542264928

=== 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: winx64_10_perf_bisect
  Benchmark    : system_health.common_desktop
  Metric       : timeToFirstMeaningfulPaint_avg/browse_media/browse_media_pinterest
  Change       : 84.53% | 1138.00816667 -> 2099.91399999

Revision             Result                  N
chromium@502245      1138.01 +- 125.596      6      good
chromium@502250      1233.88 +- 418.354      9      good
chromium@502251      2008.4 +- 1978.04       6      bad       <--
chromium@502252      2010.17 +- 2213.2       6      bad
chromium@502253      2237.26 +- 3205.76      6      bad
chromium@502255      1689.65 +- 460.962      6      bad
chromium@502264      1908.4 +- 1204.8        6      bad
chromium@502283      2158.26 +- 1978.0       6      bad
chromium@502320      2099.91 +- 2292.69      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=browse.media.pinterest system_health.common_desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8968030536542264928


For feedback, file a bug with component Speed>Bisection