All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=659057

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgnYL6pgsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgncaAsgkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgneT8rQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgndXAtQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgnen8tQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg7ZeHvwkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgndfVugoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgnbWbsAsM


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

chromium-rel-win7-gpu-intel

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8997836156076759312

===== 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@426463  26867.1  1297.59  18  good
chromium@426571  27128.8  1730.02  18  bad

Bisect job ran on: winx64intel_perf_bisect
Bug ID: 659057

Test Command: src/tools/perf/run_benchmark -v --browser=release_x64 --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests tracing.tracing_with_debug_overhead
Test Metric: Max number of events per second_avg/Max number of events per second_avg
Relative Change: 2.84%
Score: 0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/winx64intel_perf_bisect/builds/1216
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8997836156076759312


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=4974819207020544

| 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!

This looks like a false alert, the ref moved at the same time.