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Issue metadata

Status: Duplicate
Merged: issue 680034
Owner: ----
Closed: Jan 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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2.6% regression in system_health.memory_mobile at 442254:442435

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=681567

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgoIqa9QgM


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

android-nexus5
Project Member

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

Mergedinto: 680034
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : mvstanton
  Commit : 38602f1ff553b32815d34a05cd6d965f4fc20960
  Date   : Mon Jan 09 15:31:00 2017
  Subject: [FeedbackVector] Infrastructure for literal arrays in the vector.

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:chrome:all_processes:reported_by_chrome:v8:effective_size_avg/load_news/load_news_wikipedia
  Change       : 1.44% | 7207518.0 -> 7296635.55556

Revision                           Result                 N
chromium@442254                    7207518 +- 201027      14      good
chromium@442300                    7198412 +- 155818      9       good
chromium@442312                    7209171 +- 216222      14      good
chromium@442312,v8@e7fc42796c      7204023 +- 228714      14      good
chromium@442312,v8@38602f1ff5      7305111 +- 121937      9       bad       <--
chromium@442313                    7283887 +- 149302      9       bad
chromium@442314                    7289373 +- 288673      21      bad
chromium@442315                    7314980 +- 235174      14      bad
chromium@442318                    7285415 +- 185413      14      bad
chromium@442323                    7308456 +- 120292      9       bad
chromium@442345                    7294753 +- 241729      14      bad
chromium@442435                    7296636 +- 193587      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.news.wikipedia system_health.memory_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8990297987682931808

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5910194640388096


| 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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