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Issue metadata

Status: Duplicate
Merged: issue 800448
Owner: ----
Closed: Jan 2018
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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4.2% regression in system_health.memory_mobile at 527026:527157

Project Member Reported by hjd@google.com, Jan 10 2018

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Jan 10 2018

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=800735

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=448526bd3c77699408bc51fb2a7a2dad6d640c11265314910d2ff893a615a738


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

android-one
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Jan 10 2018

Mergedinto: 800448
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : bsheedy
  Commit : 2a59f25dbac3347aa8b4123e8efb682de2a9821c
  Date   : Thu Jan 04 17:48:01 2018
  Subject: Reland "Update Android NDK to r16"

Bisect Details
  Configuration: android_one_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:chrome:all_processes:reported_by_chrome:cc:effective_size_avg/load_media/load_media_youtube
  Change       : 4.47% | 3677872.57143 -> 3842444.0

Revision             Result                 N
chromium@527025      3677873 +- 389447      14      good
chromium@527028      3637644 +- 217223      9       good
chromium@527029      3842444 +- 0.0         6       bad       <--
chromium@527030      3842444 +- 0.0         6       bad
chromium@527034      3842444 +- 0.0         6       bad
chromium@527042      3842444 +- 0.0         6       bad
chromium@527058      3842444 +- 0.0         6       bad
chromium@527091      3842444 +- 0.0         6       bad
chromium@527157      3842444 +- 0.0         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-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=load.media.youtube 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/8957782316577810992


For feedback, file a bug with component Speed>Bisection

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