All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=699721

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg1JbQpQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglK_VpwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglKKeqwkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglILP4QgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglPvIoQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg1Oa9qQsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg1KL-iQgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglOH26QgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg1PClsAsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglPvrtAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglPng7woM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglLet6AgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg1JD25wgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg1PSVqwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglJ2AuAsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglKW8uAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglKHwswkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglOGEoQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglNbN4woM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglL3SqAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglN2_oAsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg1OTR_ggM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglMXAuwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglOLNqAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglKLKsgsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglPnqoAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglOv7ugoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglO3GvwsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglM-yuAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg1NCBuQoM


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

android-nexus5
android-nexus5X
android-nexus6
android-nexus7v2
android-one
android-webview-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8985654489430880224

=== Auto-CCing suspected CL author ulan@chromium.org ===

Hi ulan@chromium.org, the bisect results pointed to your CL, please take a look at the
results.


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

Suspected Commit
  Author : ulan
  Commit : af55a29706703121f83837d0c9020649bb9ec6ce
  Date   : Thu Mar 02 18:27:49 2017
  Subject: [heap] Do not delay mark-compact by doing scavenge.

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:webview:all_processes:reported_by_chrome:v8:effective_size_avg/background_media/background_media_imgur
  Change       : 30.99% | 12602436.8889 -> 15546644.0

Revision                           Result                   N
chromium@454750                    12602437 +- 686866       9       good
chromium@454788                    12582110 +- 837883       14      good
chromium@454793                    12702834 +- 682022       14      good
chromium@454793,v8@59c9e6ff69      12718161 +- 321361       14      good
chromium@454793,v8@802d367df2      12630485 +- 811485       14      good
chromium@454793,v8@ff8b1abb1a      12608270 +- 1314689      14      good
chromium@454793,v8@12ce15c35b      12650699 +- 610536       9       good
chromium@454793,v8@d003c2ad9c      12484969 +- 450026       6       good
chromium@454793,v8@af55a29706      16154719 +- 3809560      9       bad       <--
chromium@454793,v8@386e5a1149      15478738 +- 9117979      21      bad
chromium@454794                    15273249 +- 9634477      21      bad
chromium@454796                    15927735 +- 5851684      14      bad
chromium@454797                    15933191 +- 6092353      14      bad
chromium@454805                    15504891 +- 9247497      21      bad
chromium@454822                    15635203 +- 6865819      14      bad
chromium@454900                    15546644 +- 5574582      9       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-webview --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=background.media.imgur system_health.memory_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8985654489430880224

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5516293098176512


| 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!

The CL changes GC timing. Some regressions are expected.

The graphs have either recovered or even better than before thanks to TF+I launch.