All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=731664

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg5ve6-gkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg5r6kpAsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg5vupogkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgluyItQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgloGDpwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgloye5QgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg5rekxAsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg5pGmtwsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglvCNrAsM


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

chromium-rel-mac-retina
chromium-rel-mac11
chromium-rel-mac11-pro
chromium-rel-mac12
chromium-rel-mac12-mini-8gb

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8977267786341255344

=== BISECT JOB RESULTS ===
Perf regression found with culprit

Suspected Commit
  Author : mek
  Commit : c8e2b27f71c6792fa1072fa98a22c111ad229090
  Date   : Tue Jun 06 23:18:28 2017
  Subject: Switch to mojo localstorage backend by default.

Bisect Details
  Configuration: mac_10_12_perf_bisect
  Benchmark    : page_cycler_v2.basic_oopif
  Metric       : timeToFirstContentfulPaint_avg/pcv1-cold/http___www.nationalgeographic.com_
  Change       : 38.77% | 390.2862 -> 541.590666667

Revision             Result                  N
chromium@477350      390.286 +- 106.936      5      good
chromium@477424      378.812 +- 51.3175      6      good
chromium@477443      385.239 +- 53.7333      6      good
chromium@477452      379.275 +- 49.9215      6      good
chromium@477457      378.89 +- 57.6672       6      good
chromium@477458      557.358 +- 48.6846      5      bad       <--
chromium@477459      548.792 +- 63.7135      6      bad
chromium@477461      545.624 +- 48.4293      6      bad
chromium@477498      541.591 +- 41.6304      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=http...www.nationalgeographic.com. page_cycler_v2.basic_oopif

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8977267786341255344

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5603838226071552


| 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 Speed>Bisection.  Thank you!