All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=729755

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgxsm84QgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgxuXX7QgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgpsau6ggM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgpqur6AgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgpqGmsgkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgptKttgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgpoy9ogoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDghvafowkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgpq_NqgkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgpqaIrgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgpoTQwAgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgxszKnQsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgpp3TrAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgprrxgggM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgptKxpwkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgptKxpwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgpqKv-woM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgxv2s_wgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDghu6PlQgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgxqvlhwgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgxtfgvwgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgpp-_sgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgxsHZzwsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgpsyMuwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgpszQqgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgpqGbpwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgxr_PoQsM


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

android-nexus5X
android-nexus6
android-one

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8977591148323170720

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

Suspected Commit
  Author : hpayer
  Commit : 502c6ae6a03979efbd3e006e6a0b8c3369ca2bbc
  Date   : Fri Jun 02 09:40:16 2017
  Subject: [heap] Activate memory reducer on external memory activity.

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:chrome:all_processes:reported_by_chrome:cc:effective_size_avg/browse_social/browse_social_instagram
  Change       : 21.49% | 177750906.667 -> 215940770.667

Revision                           Result                     N
chromium@476615                    177750907 +- 1207937       6       good
chromium@476636                    174798999 +- 7091210       6       good
chromium@476647                    177127616 +- 3241256       6       good
chromium@476652                    177476317 +- 3413904       6       good
chromium@476655                    177576556 +- 1281211       6       good
chromium@476656                    177750907 +- 1479414       9       good
chromium@476656,v8@d1a9603e57      177301967 +- 3355984       6       good
chromium@476656,v8@502c6ae6a0      215592069 +- 4766005       6       bad       <--
chromium@476656,v8@3b7ff7a5e5      209851198 +- 51775422      14      bad
chromium@476657                    214461722 +- 5202457       9       bad
chromium@476698                    215940771 +- 4318284       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-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=browse.social.instagram system_health.memory_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8977591148323170720

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5735691406802944


| 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!

De-duplicating because the merge was done based on bisect of different kinds (memory vs exit code).

Regression in #3 has recovered:
https://chromeperf.appspot.com/report?sid=ca8d3cd457b3b8a684dbf9b7167247145482a8f7e9df85a6713d8c9aa982588c&start_rev=473830&end_rev=498098