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Issue metadata

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



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1.5% regression in system_health.memory_mobile at 448607:448626

Project Member Reported by briander...@chromium.org, Feb 9 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=690244

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqPm21wkM


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

android-webview-nexus6
Mergedinto: 690413
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : jgruber
  Commit : 7d15175a0f59dfc15cf811a45e358dd4cc9b36e9
  Date   : Tue Feb 07 10:07:57 2017
  Subject: Revert of [regexp] Add stub for RegExpExec instead of inlining (patchset #1 id:1 of https://codereview.chromium.org/2677073004/ )

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:webview:all_processes:reported_by_chrome:v8:effective_size_avg/load_search/load_search_google
  Change       : 1.17% | 5227347.33333 -> 5288247.33333

Revision                           Result                  N
chromium@448606                    5227347 +- 33080.4      6      good
chromium@448616                    5220691 +- 39681.1      6      good
chromium@448619                    5224888 +- 35238.9      6      good
chromium@448619,v8@f4739ea863      5224501 +- 43824.3      6      good
chromium@448619,v8@7d15175a0f      5294731 +- 38525.7      6      bad       <--
chromium@448619,v8@009e8b11e2      5297870 +- 41532.8      6      bad
chromium@448620                    5295401 +- 34891.0      6      bad
chromium@448621                    5299649 +- 34432.3      6      bad
chromium@448626                    5288247 +- 42718.5      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-webview --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=load.search.google system_health.memory_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8988180228763574704

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5283884540887040


| 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!
Labels: Performance-Memory
Labels: -Performance-Memory

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