All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=633037

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICghu7VsAoM


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

chromium-rel-mac11

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/9005558405248767984

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


===== SUSPECTED CL(s) =====
Subject : Turn on enable begin frame scheduling by default
Author  : enne
Commit description:
  
This turns on --enable-begin-frame-scheduling for all platforms but mus
and Blimp.  This change means browser->renderer begin frame ticks
instead of sending vsync information and having a synthetic source on
the renderer side.  This feature was already on for Android so should
only be a real change for desktop / ChromeOS platforms.

Lots of cleanup can follow from this like removing all commit vsync /
authoritative vsync / CompositorVSyncManager things, but this is a
smaller patch to suss out any performance regressions.

This previously landed and regressed a number of metrics.  Some of these
have been investigated and fixed and the rest are WontFix.

CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel

Review-Url: https://codereview.chromium.org/1939253002
Cr-Commit-Position: refs/heads/master@{#408172}
Commit  : d020d554c9ffc0476d43f5364a47c522b64e3d9a
Date    : Wed Jul 27 17:45:34 2016


===== TESTED REVISIONS =====
Revision         Mean   Std Dev  N  Good?
chromium@408145  299.0  2.91548  5  good
chromium@408160  299.4  4.27785  5  good
chromium@408168  301.4  3.04959  5  good
chromium@408170  300.6  4.03733  5  good
chromium@408171  300.2  5.4037   5  good
chromium@408172  330.4  10.1637  5  bad    <--
chromium@408175  335.0  5.38516  5  bad

Bisect job ran on: mac_10_11_perf_bisect
Bug ID: 633037

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests media.tough_video_cases
Test Metric: idle_wakeups_gpu/idle_wakeups_gpu
Relative Change: 12.04%
Score: 99.8

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_10_11_perf_bisect/builds/785
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9005558405248767984


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5824051231064064

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