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Issue 778679 link

Starred by 4 users

Issue metadata

Status: WontFix
Owner:
Closed: Feb 2018
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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1%-1.2% regression in system_health.memory_mobile at 511320:511393

Project Member Reported by petermarshall@chromium.org, Oct 26 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Oct 26 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=778679

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=8f679e3b0a22c2b7605b0ca04af37e3804d788d6c9abcb30f51434e4eb882849


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

android-nexus5
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Oct 26 2017

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

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

Hi neis@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 : Georg Neis
  Commit : dabf6003c9def98a3f8e3770b9060989f3ffdd21
  Date   : Tue Oct 24 11:46:38 2017
  Subject: [bigint] Support <, <=, >, >=.

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:heap:allocated_objects_size_avg/load_chrome/load_chrome_blank
  Change       : 0.80% | 1349840.0 -> 1360608.0

Revision                           Result                  N
chromium@511319                    1349840 +- 0.0          6      good
chromium@511338                    1349840 +- 0.0          6      good
chromium@511347                    1349840 +- 0.0          6      good
chromium@511352                    1349840 +- 0.0          6      good
chromium@511352,v8@d75ecf1303      1349840 +- 0.0          6      good
chromium@511352,v8@0105522f7e      1349840 +- 0.0          6      good
chromium@511352,v8@dabf6003c9      1360608 +- 0.0          6      bad       <--
chromium@511353                    1360607 +- 7.30297      6      bad
chromium@511354                    1360608 +- 0.0          6      bad
chromium@511356                    1360608 +- 0.0          6      bad
chromium@511393                    1360608 +- 0.0          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.chrome.blank 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/8964662599805213296


For feedback, file a bug with component Speed>Bisection
Project Member

Comment 4 by 42576172...@developer.gserviceaccount.com, Oct 27 2017

Issue 778615 has been merged into this issue.
Project Member

Comment 5 by 42576172...@developer.gserviceaccount.com, Oct 27 2017

Issue 778677 has been merged into this issue.
Project Member

Comment 6 by 42576172...@developer.gserviceaccount.com, Oct 27 2017

Cc: tguilbert@chromium.org
 Issue 779172  has been merged into this issue.
Project Member

Comment 7 by 42576172...@developer.gserviceaccount.com, Oct 31 2017

Cc: briander...@chromium.org
 Issue 780204  has been merged into this issue.
Issue 780248 has been merged into this issue.

Comment 9 by neis@chromium.org, Feb 13 2018

Status: WontFix (was: Assigned)
A small regression is expected when adding a new primitive to Javascript.

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