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Issue 759063 link

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Issue metadata

Status: Duplicate
Merged: issue 758578
Owner: ----
Closed: Aug 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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6.2% regression in system_health.memory_mobile at 495372:495456

Project Member Reported by kraynov@chromium.org, Aug 25 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Aug 25 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=759063

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=79617640d4db1c0d4cf9560c09ae1f39eb5527785d894d9fc416ed9d4de476c7


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

android-webview-nexus6
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Aug 25 2017

Mergedinto: 758578
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Thomas Guilbert
  Commit : 6b6be3d570fd3f83666aa26b3067d0af51841aa2
  Date   : Fri Aug 18 03:17:27 2017
  Subject: Add demuxer based HLS detection

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:webview:all_processes:reported_by_chrome:gpu:effective_size_avg/background_news/background_news_nytimes
  Change       : 6.25% | 2097152.0 -> 2228224.0

Revision             Result              N
chromium@495371      2097152 +- 0.0      6      good
chromium@495414      2097152 +- 0.0      6      good
chromium@495435      2097152 +- 0.0      6      good
chromium@495446      2097152 +- 0.0      6      good
chromium@495447      2097152 +- 0.0      6      good
chromium@495448      2228224 +- 0.0      6      bad       <--
chromium@495449      2228224 +- 0.0      6      bad
chromium@495451      2228224 +- 0.0      6      bad
chromium@495456      2228224 +- 0.0      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=background.news.nytimes 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/8970272712019622992


For feedback, file a bug with component Speed>Bisection

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