All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=759585

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=3776f42a67ee3b9cf8c0f77c81bffa3390e71facfb29e111ef189be40c6717f2


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

chromium-rel-win7-dual

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970007285725704464

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

Suspected Commit
  Author : Pavel Feldman
  Commit : 9ce7836fdec98fde42fc61347c4161077dbea0fc
  Date   : Wed Aug 23 07:07:21 2017
  Subject: DevTools: introduce lifecycle events reported over the page domain.

Bisect Details
  Configuration: win_perf_bisect
  Benchmark    : system_health.common_desktop
  Metric       : timeToFirstMeaningfulPaint_avg/multitab_misc/multitab_misc_typical24
  Change       : 313.52% | 1803.88444975 -> 6658.10657321

Revision             Result                  N
chromium@496532      1803.88 +- 1874.58      6       good
chromium@496575      1640.84 +- 330.978      6       good
chromium@496597      1731.15 +- 817.383      14      good
chromium@496603      1740.5 +- 1271.27       9       good
chromium@496606      2164.56 +- 2792.61      14      good
chromium@496607      4807.11 +- 9955.23      14      bad       <--
chromium@496608      5570.28 +- 14353.9      21      bad
chromium@496618      6658.11 +- 12586.5      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=multitab.misc.typical24 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/8970007285725704464


For feedback, file a bug with component Speed>Bisection