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Issue 787400 link

Starred by 2 users

Issue metadata

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



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2% regression in system_health.memory_mobile at 517723:517729

Project Member Reported by hjd@google.com, Nov 21 2017

Issue description

Maybe recovering.
 
Project Member

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

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=787400

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=c34fc917a6979df0bcb57634c9cf29db70c7efc1eed5f7cc5caa152c4ee88d25


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

android-webview-nexus6
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Nov 21 2017

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

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

Hi cbruni@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 : Camillo Bruni
  Commit : a4af0ce633c5032bafc55e86248c9a78634ef8f8
  Date   : Sat Nov 18 00:52:12 2017
  Subject: [ic] Track the IC state change in FeedbackNexus::ConfigureMegamorphic

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:webview:all_processes:reported_by_chrome:malloc:effective_size_avg/browse_media/browse_media_facebook_photos
  Change       : 2.60% | 30163130.6667 -> 30947614.6667

Revision                           Result                  N
chromium@517722                    30163131 +- 741880      6      good
chromium@517726                    30351477 +- 595406      9      good
chromium@517727                    30365077 +- 406161      6      good
chromium@517727,v8@a4af0ce633      30991374 +- 590949      6      bad       <--
chromium@517727,v8@87d7722be4      31013755 +- 605824      6      bad
chromium@517727,v8@09b53eef4c      31225632 +- 822654      6      bad
chromium@517728                    30948612 +- 881803      9      bad
chromium@517729                    30947615 +- 246298      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=browse.media.facebook.photos 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/8962316603613921760


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

Comment 4 by 42576172...@developer.gserviceaccount.com, Nov 21 2017

Cc: mvstanton@google.com mvstan...@chromium.org
 Issue 787410  has been merged into this issue.

Comment 5 by cbruni@chromium.org, Nov 21 2017

Mergedinto: 786908
Status: Duplicate (was: Assigned)

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