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Issue 792024 link

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Issue metadata

Status: Duplicate
Merged: issue 789441
Owner: ----
Closed: Dec 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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4.6%-5.6% regression in system_health.memory_mobile at 519234:519294

Project Member Reported by pmeenan@chromium.org, Dec 5 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=792024

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=c60617f68e84ff35fd38050e94f7756e3f80cb1f5ed7698eca8049a20f016f38


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

android-webview-nexus5X
android-webview-nexus6
Mergedinto: 789441
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Tsuyoshi Horo
  Commit : e9cdaa227686d4e995569173d451cab0767ac48f
  Date   : Mon Nov 27 09:57:08 2017
  Subject: Add PWAFullCodeCache to fieldtrial_testing_config.json

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:webview:all_processes:reported_by_chrome:malloc:effective_size_avg/load_news/load_news_washingtonpost
  Change       : 5.52% | 30896364.0 -> 32600714.6667

Revision             Result                   N
chromium@519233      30896364 +- 901848       6      good
chromium@519247      30599272 +- 588570       6      good
chromium@519254      30620555 +- 1031477      6      good
chromium@519258      30773051 +- 582813       6      good
chromium@519260      30318804 +- 612788       6      good
chromium@519261      32600715 +- 871858       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=load.news.washingtonpost 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/8961037906401778592


For feedback, file a bug with component Speed>Bisection

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