All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=591446

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDAn8e-twoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDAn9-mugkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDAn8WZpwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA35bepAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDAn5GTogsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDAn4OtvgsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA3-jHqwkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDAn5GguQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDAn-3foAkM


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

android-galaxy-s5
android-nexus6
android-nexus9
android-one
chromium-rel-mac-hdd
linux-release

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


===== SUSPECTED CL(s) =====
Subject : [DevTools] Postpone more agents instantiation until attached.
Author  : dgozman
Commit description:
  
To support multiple attached devtools, we have to instantiate
individual agents on demand, rather than on creation.
This patch moves most of agents, with only worker and inspector to go.

BUG= 590878 

Review URL: https://codereview.chromium.org/1746393003

Cr-Commit-Position: refs/heads/master@{#378509}
Commit  : b547858514737d59af3c55b2b06b4e511624c304
Date    : Tue Mar 01 19:17:51 2016


===== TESTED REVISIONS =====
Revision                Mean Value  Std. Dev.   Num Values  Good?
chromium@378507         168.105713  3.965841    5           good
chromium@378508         165.484626  4.605715    5           good
chromium@378509         224.29967   8.650303    5           bad
chromium@378510         224.534978  5.099607    4           bad
chromium@378512         228.06593   1.614251    5           bad

Bisect job ran on: android_nexus6_perf_bisect
Bug ID: 591446

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --also-run-disabled-tests v8.top_25_smooth
Test Metric: v8_gc_total/v8_gc_total
Relative Change: 35.67%
Score: 99.9

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus6_perf_bisect/builds/1998
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9019274070940829472


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|  X  | for more information addressing perf regression bugs. For feedback,
| / \ | file a bug with label Cr-Tests-AutoBisect.  Thank you!