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Issue metadata

Status: Duplicate
Merged: issue 699705
Owner: ----
Closed: Mar 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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1%-59.3% regression in system_health.memory_mobile at 455069:455166

Project Member Reported by benhenry@google.com, Mar 8 2017

Issue description

See the link to graphs below.
 
Mergedinto: 699705
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : pdr
  Commit : a20ad732333dc9db2b545886acd16a11abdc5842
  Date   : Tue Mar 07 17:11:15 2017
  Subject: Remove indirection: setup scrollbar scroll layers in the scrollbar constructor

Bisect Details
  Configuration: android_nexus6_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:chrome:all_processes:reported_by_os:system_memory:java_heap:proportional_resident_size_avg/browse_media/browse_media_imgur
  Change       : 59.90% | 16353962.6667 -> 26149546.6667

Revision             Result                   N
chromium@455070      16353963 +- 75452.4      6      good
chromium@455095      16076459 +- 93028.2      6      good
chromium@455101      16050859 +- 176281       6      good
chromium@455104      16060757 +- 163806       6      good
chromium@455105      25989120 +- 335122       6      bad       <--
chromium@455106      25962155 +- 533475       6      bad
chromium@455107      26071381 +- 315494       6      bad
chromium@455119      26149547 +- 189784       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 --story-filter=browse.media.imgur system_health.memory_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8985652397498646672

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5903198113497088


| O O | Visit http://www.chromium.org/developers/speed-infra/perf-bug-faq
|  X  | for more information addressing perf regression bugs. For feedback,
| / \ | file a bug with component Speed>Bisection.  Thank you!

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