All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=766563

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=ae8e8f08916d4946eeb7f4e20e289ea7613d1b74a9c9a6984180116de2fa6a82


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

android-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8968030587434667600

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

Suspected Commit
  Author : clamy
  Commit : 0dbded05ad0ba1c3d8388fd649130509ab97f07a
  Date   : Fri Sep 15 14:44:08 2017
  Subject: Enable PlzNavigate on trunk

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:chrome:all_processes:reported_by_chrome:cc:effective_size_avg/background_search/background_search_google
  Change       : 43.75% | 17816689.7778 -> 25612288.0

Revision             Result                    N
chromium@502223      17816690 +- 12500768      9       good
chromium@502248      16741262 +- 9774079       9       good
chromium@502250      15589376 +- 0.0           6       good
chromium@502251      25612288 +- 0.0           6       bad       <--
chromium@502254      25612288 +- 0.0           6       bad
chromium@502260      24180443 +- 13123072      14      bad
chromium@502272      25612288 +- 0.0           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-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=background.search.google 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/8968030587434667600


For feedback, file a bug with component Speed>Bisection