All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=801730

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=9899cbd864a0c77769c8bdc81af9723bd77ecbdc8a09dadf67c5ef38e7946eb0


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

android-nexus5X
android-webview-nexus5X
android-webview-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8957561125376689856

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

Suspected Commit
  Author : Eric Karl
  Commit : 7db283d1d769d05e88b565d5b583980f3d2202aa
  Date   : Wed Jan 10 21:35:18 2018
  Subject: GPU raster tile size calculation should account for DSF rounding

Bisect Details
  Configuration: android_webview_arm64_aosp_perf_bisect
  Benchmark    : memory.top_10_mobile
  Metric       : memory:webview:all_processes:reported_by_chrome:cc:effective_size_avg/background/after_https_m_facebook_com_rihanna
  Change       : 25.00% | 8665315.55556 -> 10831644.4444

Revision             Result                   N
chromium@528379      8665316 +- 919096        9      good
chromium@528419      8881948 +- 919096        9      good
chromium@528429      8448683 +- 1779821       6      good
chromium@528430      8448683 +- 1779821       6      good
chromium@528431      11048277 +- 3899392      9      bad       <--
chromium@528432      11264910 +- 3676382      9      bad
chromium@528434      10831644 +- 4006244      9      bad
chromium@528439      11048277 +- 2251315      6      bad
chromium@528458      10831644 +- 4006244      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=https.m.facebook.com.rihanna 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/8957561125376689856


For feedback, file a bug with component Speed>Bisection