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Issue 761741 link

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Issue metadata

Status: Duplicate
Merged: issue 758979
Owner: ----
Closed: Sep 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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7.1% regression in system_health.memory_desktop at 496705:496822

Project Member Reported by petermarshall@chromium.org, Sep 4 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=761741

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=dd664e7a93be75a5fd161a05a79a06f86f7e82fafe0dd8f55ef40bac932e812b


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

chromium-rel-mac11-air
Mergedinto: 758979
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Sami Kyostila
  Commit : be262cd3ee73975ced4e339d630b18f3e7e4145b
  Date   : Wed Aug 23 18:53:03 2017
  Subject: perf: Disable native heap profiling in memory benchmarks

Bisect Details
  Configuration: mac_air_perf_bisect
  Benchmark    : system_health.memory_desktop
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:heap:effective_size_avg/load_tools/load_tools_docs
  Change       : 10.47% | 66940986.6667 -> 73946413.3333

Revision             Result                   N
chromium@496704      66940987 +- 808195       6      good
chromium@496734      67200016 +- 548405       6      good
chromium@496749      66872712 +- 1223525      6      good
chromium@496750      66780784 +- 1039283      6      good
chromium@496751      74739483 +- 3201955      6      bad       <--
chromium@496753      74261623 +- 7852929      6      bad
chromium@496756      73928027 +- 3185696      6      bad
chromium@496763      73569288 +- 4155256      6      bad
chromium@496822      73946413 +- 3442993      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=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=load.tools.docs system_health.memory_desktop

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8969399250606875008


For feedback, file a bug with component Speed>Bisection

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