All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=661065

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgw7aXqAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgg62SuQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgg_Ke7QgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg_du-qwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgg7TctQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg_bbt-AsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg_avpvQoM


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

chromium-rel-win7-gpu-nvidia
chromium-rel-win7-x64-dual
win-zenbook

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8997224817939515760

===== BISECT JOB RESULTS =====
Status: completed


=== Bisection aborted ===
The bisect was aborted because The metric values for the initial "good" and "bad" revisions do not represent a clear regression.
Please contact the the team (see below) if you believe this is in error.

=== Warnings ===
The following warnings were raised by the bisect job:

 * Bisect failed to reproduce the regression with enough confidence.

===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N   Good?
chromium@427370  112.666  27.1748  18  good
chromium@427387  101.57   12.3019  18  bad

Bisect job ran on: winx64_zen_perf_bisect
Bug ID: 661065

Test Command: src/tools/perf/run_benchmark -v --browser=release_x64 --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests smoothness.gpu_rasterization.tough_filters_cases
Test Metric: frame_times/http___rawgit.com_WebKit_webkit_master_PerformanceTests_Animometer_developer.html?test-interval_20_display_minimal_controller_fixed_frame-rate_50_kalman-process-error_1_kalman-measurement-error_4_time-measurement_performance_suite-name_Animometer_test-name_Focus_complexity_100
Relative Change: 7.64%
Score: 0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/winx64_zen_perf_bisect/builds/579
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8997224817939515760


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5836982565994496

| O O | Visit http://www.chromium.org/developers/speed-infra/perf-bug-faq
|  X  | for more information addressing perf regression bugs. For feedback,
| / \ | file a bug with component Tests>AutoBisect.  Thank you!

Looks like this has recovered (and then some) as of r429008. Feel free to reopen if I've read this wrong.