All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=638249

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgjrnZpAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgzqC07QgM


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

chromium-rel-mac-hdd
chromium-rel-mac10

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/9004159046720051104

=== Auto-CCing suspected CL author ccameron@chromium.org ===

Hi ccameron@chromium.org, the bisect results pointed to your CL below as possibly
causing a regression. Please have a look at this info and see whether
your CL be related.


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


===== SUSPECTED CL(s) =====
Subject : Mac: Loosen CoreAnimation blacklist on 10.10 and histograms to watch
Author  : ccameron
Commit description:
  
This was only ever observed on this particular GPU.

Add histograms to watch glFlush and CATransaction time, since they
(in addition to IOSurface create and texture bind) are places where we
see hangs.

BUG= 580616 
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2241003002
Cr-Commit-Position: refs/heads/master@{#412012}
Commit  : b9bc972508ad89ce3a9c6b1045b725cd23646c5e
Date    : Mon Aug 15 19:19:31 2016


===== TESTED REVISIONS =====
Revision         Mean     Std Dev    N  Good?
chromium@412007  12.2419  0.037569   5  good
chromium@412011  12.2363  0.0703465  5  good
chromium@412012  13.9902  0.185062   5  bad    <--
chromium@412013  13.9042  0.0845697  5  bad
chromium@412015  13.9413  0.13398    5  bad
chromium@412022  13.9125  0.0937205  5  bad
chromium@412036  13.9625  0.0895238  5  bad

Bisect job ran on: mac_hdd_perf_bisect
Bug ID: 638249

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests thread_times.tough_scrolling_cases
Test Metric: thread_total_all_cpu_time_per_frame/thread_total_all_cpu_time_per_frame
Relative Change: 14.06%
Score: 99.9

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_hdd_perf_bisect/builds/740
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9004159046720051104


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5841946229080064

| 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!