All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=657182

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICglemNsAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg1dTGpQkM


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/8998424866494005344

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


===== SUSPECTED CL(s) =====
Subject : Update fieldtrial_util To Handle Combined Fieldtrial Config Format
Author  : robliao
Commit description:
  
BUG=649363, 650705

Review-Url: https://codereview.chromium.org/2373843002
Cr-Commit-Position: refs/heads/master@{#421670}
Commit  : 8da8200a279fcafc4a7c68f2e6ef95f4d721bb3a
Date    : Wed Sep 28 22:51:09 2016


===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N   Good?
chromium@421636  196.0    9.48063  18  good
chromium@421658  196.667  9.8876   18  good
chromium@421669  196.167  9.04367  12  good
chromium@421670  216.625  14.3819  8   bad    <--
chromium@421671  205.167  16.475   12  bad
chromium@421672  205.667  7.70281  12  bad
chromium@421674  210.0    13.2253  12  bad
chromium@421679  207.0    9.40588  18  bad

Bisect job ran on: mac_hdd_perf_bisect
Bug ID: 657182

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests tab_switching.five_blank_pages
Test Metric: idle_wakeups_total/idle_wakeups_total
Relative Change: 7.93%
Score: 80.0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_hdd_perf_bisect/builds/849
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8998424866494005344


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5778377120677888

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This issue has been Available for over a year. If it's no longer important or seems unlikely to be fixed, please consider closing it out. If it is important, please re-triage the issue.

Sorry for the inconvenience if the bug really should have been left as Available. If you change it back, also remove the "Hotlist-Recharge-Cold" label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Probably not actionable at this point.