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Issue 797111 link

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Issue metadata

Status: Duplicate
Merged: issue 797045
Owner:
Closed: Dec 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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10.3% regression in system_health.memory_mobile at 524688:524741

Project Member Reported by briander...@chromium.org, Dec 21 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Dec 21 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=797111

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=1a1035674030998f00ef768e06cace310378debc91f7dcb02ad61738491afbbb


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

android-one
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Dec 22 2017

Cc: yangguo@chromium.org
Owner: yangguo@chromium.org
Status: Assigned (was: Untriaged)

=== Auto-CCing suspected CL author yangguo@chromium.org ===

Hi yangguo@chromium.org, the bisect results pointed to your CL, please take a look at the
results.


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

Suspected Commit
  Author : Yang Guo
  Commit : 1586f37f2d1f06415dbaf0c03b0f6e0702450ce9
  Date   : Mon Dec 18 09:20:23 2017
  Subject: [parser] provide way to imply that a script is wrapped in a function.

Bisect Details
  Configuration: android_one_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:chrome:all_processes:reported_by_chrome:v8:effective_size_avg/load_search/load_search_yandex
  Change       : 10.60% | 4251014.0 -> 4701473.33333

Revision                           Result                  N
chromium@524687                    4251014 +- 68079.0      6      good
chromium@524694                    4250833 +- 58583.9      6      good
chromium@524695                    4315366 +- 387204       6      good
chromium@524695,v8@41e8619069      4309277 +- 420083       9      good
chromium@524695,v8@1586f37f2d      4696005 +- 27799.9      6      bad       <--
chromium@524695,v8@09103e9ac1      4689831 +- 32888.3      6      bad
chromium@524696                    4691561 +- 38011.6      6      bad
chromium@524698                    4692377 +- 20420.0      6      bad
chromium@524701                    4687429 +- 24138.7      6      bad
chromium@524714                    4699668 +- 9068.68      6      bad
chromium@524741                    4701473 +- 58412.2      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.search.yandex 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/8959559222903555760


For feedback, file a bug with component Speed>Bisection
Mergedinto: 797045
Status: Duplicate (was: Assigned)

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