All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=731665

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg5s_-ywsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglrS-_QoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg5tv9lwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg5r6k5AgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg5svekAgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglrT09QsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglsy8sgkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg5sug9goM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglojZpgsM


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/8977267759211646208

=== BISECT JOB RESULTS ===
Bisect was unable to run to completion

Error: INFRA_FAILURE

The bisect was able to narrow the range, you can try running with:
  good_revision: 9bb3bafb3347ac26c6dbbf78f9b77198f71eb8d5
  bad_revision : 15d4665c38868df2b193a6051c1a1ce06138378b

If failures persist contact the team (see below) and report the error.


Bisect Details
  Configuration: mac_10_12_perf_bisect
  Benchmark    : page_cycler_v2_site_isolation.basic_oopif
  Metric       : timeToFirstContentfulPaint_avg/pcv1-cold/http___www.nationalgeographic.com_

Revision             Result                  N
chromium@477350      397.968 +- 101.948      6      good
chromium@477424      382.643 +- 55.7189      6      good
chromium@477443      398.667 +- 105.538      8      good
chromium@477452      414.059 +- 304.391      9      good
chromium@477457      383.591 +- 44.5098      5      good
chromium@477461      545.576 +- 75.8988      8      bad
chromium@477498      544.69 +- 46.5356       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_site_isolation.basic_oopif

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8977267759211646208

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5615566070480896


| 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!

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8977253480889000208

=== 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_site_isolation.basic_oopif
  Metric       : timeToFirstContentfulPaint_avg/pcv1-cold/http___www.nationalgeographic.com_
  Change       : 40.38% | 387.316 -> 543.722833333

Revision             Result                  N
chromium@477350      387.316 +- 101.475      6      good
chromium@477424      378.333 +- 43.3089      6      good
chromium@477443      388.406 +- 49.284       5      good
chromium@477452      383.781 +- 49.2497      6      good
chromium@477457      384.959 +- 50.0518      6      good
chromium@477458      558.651 +- 72.1217      6      bad       <--
chromium@477459      556.006 +- 55.229       6      bad
chromium@477461      545.959 +- 46.3438      6      bad
chromium@477498      543.723 +- 45.8426      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_site_isolation.basic_oopif

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8977253480889000208

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5615566070480896


| 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!