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Issue metadata

Status: Duplicate
Merged: issue 750696
Owner: ----
Closed: Jul 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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1%-3.9% regression in memory.top_10_mobile at 490131:490523

Project Member Reported by majidvp@google.com, Jul 31 2017

Issue description

This is ~500K regression across the board.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Jul 31 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=750654

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=5a3a6add81eba295fb56f680b3e35da4b5e3ceb24e332900e9b81c0112629011


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

android-nexus5
android-nexus5X
android-nexus6
android-one
android-webview-nexus5X
android-webview-nexus6
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Jul 31 2017

Mergedinto: 750696
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Hector Dearman
  Commit : 3d197c0b3c6b2ff9cbce4990775f7bb120838231
  Date   : Fri Jul 28 11:34:31 2017
  Subject: memory-infra: Start using new RequestOSMemoryDump API

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : memory.top_10_mobile
  Metric       : memory:webview:all_processes:reported_by_os:system_memory:native_heap:proportional_resident_size_avg/background/after_http_en_m_wikipedia_org_wiki_Science
  Change       : 2.94% | 41025804.0 -> 42328388.8889

Revision             Result                   N
chromium@490130      41025804 +- 672502       6      good
chromium@490249      41200396 +- 810685       6      good
chromium@490308      41288915 +- 818592       9      good
chromium@490338      41047308 +- 413285       6      good
chromium@490353      41277424 +- 960929       9      good
chromium@490360      41376183 +- 1060967      9      good
chromium@490361      42425100 +- 488945       6      bad       <--
chromium@490362      42233953 +- 887357       6      bad
chromium@490364      42310241 +- 543570       6      bad
chromium@490367      42328389 +- 1333957      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 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/8972548083740472816


For feedback, file a bug with component Speed>Bisection

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