All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=847161

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=5754ebf560e27621a76454bab8f41b5ad652124f66d7e1c0a34a66348749aa61


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

health-plan-webview-low-end-phone

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8945296032601386096

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

Suspected Commit
  Author : v8-autoroll
  Commit : 44d7d7d6b1041b57644400a00cb3fee35f6c51b2
  Date   : Tue May 22 17:44:50 2018
  Subject: Version 6.8.275

Bisect Details
  Configuration: webview-low-end-phone-perf-bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:webview:all_processes:reported_by_chrome:v8:effective_size_avg/load_media/load_media_google_images
  Change       : 2.44% | 4185644.66667 -> 4287968.0

Revision                                                     Result                  N
android-chrome@ab1a01d957                                    4185645 +- 33061.5      6      good
android-chrome@ab1a01d957,chromium@561457                    4159327 +- 19181.3      6      good
android-chrome@ab1a01d957,chromium@561457,v8@44d7d7d6b1      4302369 +- 63646.2      6      bad       <--
android-chrome@ab1a01d957,chromium@561458                    4268250 +- 14556.0      6      bad
android-chrome@ab1a01d957,chromium@561459                    4277214 +- 27921.1      6      bad
android-chrome@ab1a01d957,chromium@561463                    4274479 +- 17072.4      6      bad
android-chrome@ab1a01d957,chromium@561471                    4282683 +- 21534.6      6      bad
android-chrome@ab1a01d957,chromium@561488                    4280031 +- 35633.7      6      bad
android-chrome@b1aba29374                                    4287968 +- 34841.5      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-webview --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=load.media.google.images 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/8945296032601386096


For feedback, file a bug with component Speed>Bisection