All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=776764

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=b266c4d8a241abc09913dc29d8bcf9818ee68c3e567b4f098a85a026ee584e90


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

android-webview-nexus5X
android-webview-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8965206207903728576

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

Suspected Commit
  Author : Eric Karl
  Commit : 840b7a60cc3c5f802ca271bd167e888e7494e8aa
  Date   : Wed Oct 18 22:39:08 2017
  Subject: [Re-Land] Use GPU Discardable in Image Decode Cache

Bisect Details
  Configuration: android_webview_arm64_aosp_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:webview:all_processes:reported_by_chrome:cc:effective_size_avg/browse_social/browse_social_facebook_infinite_scroll
  Change       : 40.73% | 272163318.667 -> 383022146.0

Revision             Result                     N
chromium@509873      272163319 +- 20181122      6      good
chromium@509892      277196027 +- 12252529      6      good
chromium@509901      280006499 +- 14854053      6      good
chromium@509902      384987305 +- 15123293      6      bad       <--
chromium@509903      383938368 +- 16664866      6      bad
chromium@509904      383372047 +- 17480298      6      bad
chromium@509906      385664910 +- 8669590       6      bad
chromium@509910      386154987 +- 13588662      6      bad
chromium@509946      383022146 +- 18765352      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=browse.social.facebook.infinite.scroll 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/8965206207903728576


For feedback, file a bug with component Speed>Bisection