All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=766548

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=b859d8c954fe961a74da9f3a893b54b9887a62af2fac0390388d2565b6589353


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

android-webview-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8968030779906897504

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

Suspected Commit
  Author : yukiy
  Commit : b8895fa6e92daaaf6d4d2c13ae1d358bc056aea5
  Date   : Thu Sep 14 04:28:17 2017
  Subject: Reland Add tab.IsServiceWorkerReadyOrNotRegist() which tells whether serviceworker registration is finished ( https://chromiumcodereview.appspot.com/3012573002 )

Bisect Details
  Configuration: android_webview_arm64_aosp_perf_bisect
  Benchmark    : memory.top_10_mobile
  Metric       : memory:webview:all_processes:reported_by_chrome:v8:effective_size_avg/background/after_https_m_facebook_com_rihanna
  Change       : 2.87% | 2623754.66667 -> 2699158.66667

Revision                                 Result                  N
chromium@501862                          2623755 +- 58.4237      6      good
chromium@501887                          2623755 +- 58.4237      6      good
chromium@501894                          2623755 +- 58.4237      6      good
chromium@501896                          2623787 +- 73.9008      6      good
chromium@501896,catapult@b8895fa6e9      2693736 +- 36707.1      6      bad       <--
chromium@501896,catapult@4647bb4807      2699568 +- 41066.2      6      bad
chromium@501897                          2704259 +- 36507.2      6      bad
chromium@501900                          2683205 +- 1529.22      6      bad
chromium@501912                          2698696 +- 38860.2      6      bad
chromium@501962                          2699159 +- 39281.4      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 memory.top_10_mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8968030779906897504


For feedback, file a bug with component Speed>Bisection