All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=843175

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=eaf7a68a68ba8e26ef577482d6f786135158fdb08d4ea6f8858731bd82b69590


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

health-plan-clankium-low-end-phone

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8946448035290168112

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

Suspected Commit
  Author : jgruber
  Commit : e0c3f6d6ca005185e537fb85bbe841fe5dae5240
  Date   : Tue May 08 11:21:37 2018
  Subject: Disable embedded builtins

Bisect Details
  Configuration: clankium-low-end-phone-perf-bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:chrome:all_processes:reported_by_os:system_memory:private_footprint_size_avg/load_social/load_social_twitter
  Change       : 0.51% | 74351047.1111 -> 74728789.3333

Revision                                                     Result                  N
android-chrome@be902aa047                                    74351047 +- 173155      9       good
android-chrome@be902aa047,chromium@556849                    74434853 +- 242470      14      good
android-chrome@be902aa047,chromium@556890                    74306446 +- 275445      9       good
android-chrome@be902aa047,chromium@556893                    74421687 +- 276853      14      good
android-chrome@be902aa047,chromium@556894                    74425490 +- 263506      14      good
android-chrome@be902aa047,chromium@556894,v8@855850eb7f      74391552 +- 301169      14      good
android-chrome@be902aa047,chromium@556894,v8@e0c3f6d6ca      74781582 +- 157414      9       bad       <--
android-chrome@be902aa047,chromium@556894,v8@c34562803e      74710650 +- 227093      21      bad
android-chrome@be902aa047,chromium@556894,v8@9f5018c9b0      74679637 +- 239955      21      bad
android-chrome@be902aa047,chromium@556894,v8@9c718099b6      74779794 +- 310637      14      bad
android-chrome@be902aa047,chromium@556895                    74753463 +- 212638      14      bad
android-chrome@be902aa047,chromium@556901                    74948608 +- 437164      6       bad
android-chrome@be902aa047,chromium@556911                    74949291 +- 240508      6       bad
android-chrome@1390428f76                                    74770660 +- 142009      9       bad
android-chrome@41db54dacb                                    74728789 +- 213317      6       bad

Please refer to the following doc on diagnosing memory regressions:
  https://chromium.googlesource.com/chromium/src/+/master/docs/memory-infra/memory_benchmarks.md

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-chrome --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=load.social.twitter system_health.memory_mobile

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8946448035290168112


For feedback, file a bug with component Speed>Bisection