All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=671146

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgp7WxrAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg57joqQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgh8fV6gsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgp7rC7wgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgp4iitQsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg57STuwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgp8bAoQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgx_DThgkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgh5XLjwgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgx_2_9goM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgx8uDtgkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgp7qdsQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgp7zbsgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgx43auwsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgh5W1lgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgx9bWnAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgx8eNsAsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgx7rbugoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgp8C7ugsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgx96aqwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgx4PSvgkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgx9zXpgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgx9iOoAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgh9_CrQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg--yniAsM


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

android-nexus5
android-nexus6
android-nexus7v2
android-nexus9
android-one

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8994118097351143552

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


===== SUSPECTED CL(s) =====
Subject : [regexp] Migrate @@match to TurboFan
Author  : jgruber
Commit description:
  
Microbenchmarks show a 4x improvement on the fast path and 2.5x improvement on
the slow path when compared to the CPP builtin implementation.

Compared to the old JS implementation, the fast path is 20% faster and the slow
path 35% slower.

BUG= v8:5339 , v8:5562 

Review-Url: https://codereview.chromium.org/2527963002
Cr-Commit-Position: refs/heads/master@{#41338}
Commit  : 4e7571a5a9bb8563ae93e0aff48c08bead765b14
Date    : Tue Nov 29 09:03:18 2016


===== TESTED REVISIONS =====
Revision                       Mean      Std Dev  N  Good?
chromium@434955                12487984  621777   8  good
chromium@434978                12381878  742071   8  good
chromium@434978,v8@18eda7024b  12443123  769872   8  good
chromium@434978,v8@9c0e2a6723  12448111  466726   8  good
chromium@434978,v8@4e7571a5a9  14394794  698314   5  bad    <--
chromium@434979                14253966  306548   5  bad
chromium@434980                14271207  446215   5  bad
chromium@434981                14355519  552928   5  bad
chromium@434983                14431807  508303   5  bad
chromium@434989                14402408  694317   5  bad
chromium@435000                14358208  337007   5  bad

Bisect job ran on: android_nexus9_perf_bisect
Bug ID: 671146

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=browse.news.washingtonpost v8.browsing_mobile_ignition
Test Metric: memory:chrome:renderer_processes:reported_by_chrome:v8:effective_size_avg/browse_news/browse_news_washingtonpost
Relative Change: 14.98%

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus9_perf_bisect/builds/2303
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8994118097351143552


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5882591268306944

| 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!