All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=631059

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg2umKuQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg2unUqAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg2umepAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg2s3vuQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg2obuuAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgmq3xoAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg2rP3owoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg2pesvwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg2qbnuQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgmquivQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgmsvBqAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg2pKWpAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg2tnZqQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg2ubVogoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg2t2gvAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgutTUvQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg2oiT_woM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICguuLVrAoM


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

android-galaxy-s5
android-nexus5
android-nexus5X
android-nexus6
android-nexus7v2
android-nexus9
android-one

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/9006152421680499488

Bisect failed: Unknown
Failure reason: the build has failed.
Additional errors:
The metric was not found in the test output.
Either of the initial "good" or "bad" revisions failed to be tested or built.

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/9005837420311972288

Bisect failed: Unknown
Failure reason: the build has failed.
Additional errors:
The metric was not found in the test output.
Either of the initial "good" or "bad" revisions failed to be tested or built.

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/9005742852908658416

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

Hi petrcermak@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 : [system-health] Update WPR for browse:social:facebook and browse:news:reddit on mobile
Author  : petrcermak
Commit description:
  
The original archives were recorded on Chrome Public (android-chromium)
and used an encoding that is not yet supported by Chrome Stable
(reference).

BUG=630004
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.perf:android_s5_perf_cq;master.tryserver.chromium.perf:mac_retina_perf_cq

Review-Url: https://codereview.chromium.org/2172263002
Cr-Commit-Position: refs/heads/master@{#407175}
Commit  : 86ab4cff30f3b4e279456fba0d95532609429a56
Date    : Fri Jul 22 16:53:47 2016


===== TESTED REVISIONS =====
Revision         Mean    Std Dev  N  Good?
chromium@407167  237402  2758.41  5  good
chromium@407174  241102  2758.41  5  good
chromium@407175  277984  0.0      5  bad    <--
chromium@407176  277984  0.0      5  bad
chromium@407177  277984  0.0      5  bad
chromium@407180  277984  0.0      5  bad
chromium@407192  277984  0.0      5  bad
chromium@407217  277984  0.0      5  bad

Bisect job ran on: android_s5_perf_bisect
Bug ID: 631059

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --also-run-disabled-tests system_health.memory_mobile
Test Metric: browse_social-memory:chrome:all_processes:reported_by_chrome:font_caches:effective_size_avg/browse_social_facebook
Relative Change: 17.09%
Score: 99.9

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_s5_perf_bisect/builds/860
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9005837420311972288


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6128334069563392

| 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!

Story set change.