All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=604012

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg-NzVqgkM


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

chromium-rel-mac-hdd

Updated revision range based on partial bisect.
https://chromium.googlesource.com/chromium/src/+log/2a024e0c01b14991ad1b3deac50427978fb4a45d..5d0094b1106880d013ae2915ef1d0e85176ac5e2

Trying a more narrow bisect.

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


===== SUSPECTED CL(s) =====
Subject : Blacklist CALayer overlays on 10.10
Author  : ccameron
Commit description:
  
This is causing hangs on 10.10. Forcing fallback to the GL renderer
makes the issue go away according to people who have seen the
issue.

So far all reports of this issue are on the following dual-GPU
combination:
  iGPU: 0x8086, 0x0166
  dGPU: 0x10de, 0x0fd5
If this improves histograms, we will try to limit the scope of
the blacklist to just this combination.

BUG= 580616 

Review URL: https://codereview.chromium.org/1873283002

Cr-Commit-Position: refs/heads/master@{#386783}
Commit  : d5c58b5bfba2721be8681f67e784279e2030c423
Date    : Tue Apr 12 19:55:31 2016


===== TESTED REVISIONS =====
Revision                Mean Value  Std. Dev.   Num Values  Good?
chromium@386780         16.720905   0.028804    18          good
chromium@386782         16.697386   0.016055    5           good
chromium@386783         16.876533   0.110932    18          bad         <-
chromium@386785         16.947539   0.067247    12          bad
chromium@386790         16.96052    0.06114     5           bad

Bisect job ran on: mac_hdd_perf_bisect
Bug ID: 604012

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests smoothness.tough_filters_cases
Test Metric: frame_times/http___static.bobdo.net_Analog_Clock.svg
Relative Change: 1.39%
Score: 99.9

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_hdd_perf_bisect/builds/493
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9014649819587060384


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=604012

| 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!