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Issue metadata

Status: Duplicate
Owner: ----
Closed: Jan 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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6.4% regression in system_health.memory_mobile at 443661:443768

Project Member Reported by nzolghadr@chromium.org, Jan 16 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=681667

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgoIHyqAsM


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

android-nexus9
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Jan 16 2017

Mergedinto: 681668
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : wangxianzhu
  Commit : d25330043a055c1327f5abec3fc512376531cc93
  Date   : Sat Jan 14 01:42:41 2017
  Subject: Revert of Remove obsolete code that invalidates document element on LayoutView resize (patchset #3 id:40001 of https://codereview.chromium.org/2483483003/ )

Bisect Details
  Configuration: android_nexus9_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:chrome:all_processes:reported_by_os:gpu_memory:proportional_resident_size_avg/load_news/load_news_nytimes
  Change       : 8.19% | 184123392.0 -> 199196672.0

Revision             Result                     N
chromium@443660      184123392 +- 4018591       6      good
chromium@443714      186963285 +- 6842578       6      good
chromium@443741      186329771 +- 7049716       6      good
chromium@443755      186329771 +- 10694088      6      good
chromium@443762      186810368 +- 6605171       6      good
chromium@443763      185368576 +- 5007396       6      good
chromium@443764      198432085 +- 5165024       6      bad       <--
chromium@443765      199633579 +- 5406356       6      bad
chromium@443768      199196672 +- 5385129       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=load.news.nytimes system_health.memory_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8990282326070627360

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5311843016376320


| 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 Tests>AutoBisect.  Thank you!

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