All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=788364

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=7294be9742c790e9517f4a51017945014c92fe4d5a9fe593c1143a609a874ac5


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

android-webview-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8962043847476287616

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

Suspected Commit
  Author : Bill Budge
  Commit : 0481b23e2562fcb001494de3765a3ef61427fd00
  Date   : Tue Nov 21 16:48:55 2017
  Subject: [Memory] Rewrite platform OS Commit / Uncommit in terms of permissions.

Bisect Details
  Configuration: android_webview_arm64_aosp_perf_bisect
  Benchmark    : memory.top_10_mobile
  Metric       : memory:webview:all_processes:reported_by_os:system_memory:native_heap:proportional_resident_size_avg/foreground/http_en_m_wikipedia_org_wiki_Science
  Change       : 8.73% | 48563821.3333 -> 52804717.3333

Revision                           Result                   N
chromium@518536                    48563821 +- 369913       6      good
chromium@518563                    48635331 +- 876187       6      good
chromium@518570                    48469955 +- 462489       6      good
chromium@518573                    48465688 +- 403739       6      good
chromium@518573,v8@a8df8f38a1      48167021 +- 507066       6      good
chromium@518573,v8@8036c41f1e      48157123 +- 188587       6      good
chromium@518573,v8@0481b23e25      53083416 +- 915647       6      bad       <--
chromium@518574                    53096728 +- 636341       6      bad
chromium@518575                    53127619 +- 1311355      6      bad
chromium@518576                    53117720 +- 1241050      6      bad
chromium@518589                    52804717 +- 1745371      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=http.en.m.wikipedia.org.wiki.Science 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/8962043847476287616


For feedback, file a bug with component Speed>Bisection