All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=762289

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=d75f42f2f5fc441230ecf25600e89176f254090f2d69684892eb4c27c1a83f10


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

chromium-rel-mac11-air

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8969252552986657344

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

Bisect Details
  Configuration: mac_air_perf_bisect
  Benchmark    : thread_times.tough_compositor_cases
  Metric       : thread_browser_cpu_time_per_frame/thread_browser_cpu_time_per_frame

Revision             Result                    N
chromium@498005      1.06495 +- 0.0282781      21      good
chromium@498167      1.05671 +- 0.0839935      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 thread_times.tough_compositor_cases

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8969252552986657344


For feedback, file a bug with component Speed>Bisection

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8969171542928283936

=== BISECT JOB RESULTS ===
Bisect failed for unknown reasons

Please contact the team (see below) and report the error.


Bisect Details
  Configuration: mac_air_perf_bisect
  Benchmark    : thread_times.tough_compositor_cases
  Metric       : thread_browser_cpu_time_per_frame/thread_browser_cpu_time_per_frame


To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests thread_times.tough_compositor_cases

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8969171542928283936


For feedback, file a bug with component Speed>Bisection

Pretty small regression, just one bot/test/page, bisect can't repro.