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Issue metadata

Status: Duplicate
Merged: issue 763087
Owner: ----
Closed: Sep 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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11.7%-17.7% regression in memory.top_10_mobile at 499766:499878

Project Member Reported by rmcilroy@chromium.org, Sep 8 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=763331

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=5e45b192a6ec0c8579794c03dd4c1b9633813f506d81c8e76e1a67a509c25c4d


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

android-one
Mergedinto: 763087
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Xida Chen
  Commit : ea91b206232bff046594f6f76b547e20c324cc37
  Date   : Wed Sep 06 01:51:20 2017
  Subject: Remove the content feature "ReducedSoftTileMemoryLimitOnLowEndAndroid"

Bisect Details
  Configuration: android_one_perf_bisect
  Benchmark    : memory.top_10_mobile
  Metric       : memory:chrome:all_processes:reported_by_chrome:cc:effective_size_avg/foreground/http_m_youtube_com_results_q_science
  Change       : 17.70% | 2643788.0 -> 3111852.0

Revision             Result              N
chromium@499765      2643788 +- 0.0      6      good
chromium@499822      2643788 +- 0.0      6      good
chromium@499836      2643788 +- 0.0      6      good
chromium@499843      2643788 +- 0.0      6      good
chromium@499844      3111852 +- 0.0      6      bad       <--
chromium@499845      3111852 +- 0.0      6      bad
chromium@499847      3111852 +- 0.0      6      bad
chromium@499850      3111852 +- 0.0      6      bad
chromium@499878      3111852 +- 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-chromium --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/8969026400779254640


For feedback, file a bug with component Speed>Bisection

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