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Issue 787435 link

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Issue metadata

Status: Duplicate
Merged: issue 782718
Owner: ----
Closed: Nov 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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24.1%-97.9% regression in v8.runtimestats.browsing_mobile at 513795:514737

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

Issue description

See the link to graphs below.
 
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=787435

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=f841480788b56edaad041208dd06d09f663e600ba01b596498953de9ccc11d57


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

android-nexus5
android-nexus5X
android-nexus6
android-one
android-webview-nexus6
Project Member

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

Mergedinto: 782718
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Toon Verwaest
  Commit : 460652c9786c686094b71f9d64e3e6025252c11a
  Date   : Mon Nov 06 17:43:26 2017
  Subject: [ic] Migrate API getters to data handlers

Bisect Details
  Configuration: android_one_perf_bisect
  Benchmark    : v8.runtimestats.browsing_mobile
  Metric       : v8-gc-full-mark-compactor_max/browse_social/browse_social_instagram
  Change       : 56.20% | 62.7278333333 -> 97.9825

Revision                           Result                  N
chromium@513794                    62.7278 +- 2.75238      6      good
chromium@514266                    62.058 +- 2.11593       6      good
chromium@514325                    62.0127 +- 1.90845      6      good
chromium@514355                    62.2956 +- 2.34537      5      good
chromium@514363                    63.0175 +- 5.93082      6      good
chromium@514367                    61.5792 +- 2.01029      6      good
chromium@514367,v8@2d12bc5bae      61.83 +- 2.25029        6      good
chromium@514367,v8@dfd029b45e      62.0492 +- 2.3138       6      good
chromium@514367,v8@c7ad5652d3      62.4578 +- 3.82478      6      good
chromium@514367,v8@460652c978      80.3574 +- 19.8567      9      bad       <--
chromium@514368                    80.9032 +- 2.36917      6      bad
chromium@514369                    79.8334 +- 4.88773      5      bad
chromium@514370                    81.113 +- 7.14857       6      bad
chromium@514384                    82.3347 +- 5.69175      6      bad
chromium@514502                    81.0566 +- 4.69055      5      bad
chromium@514737                    97.9825 +- 3.25585      6      bad

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=browse.social.instagram v8.runtimestats.browsing_mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8962312269801632720


For feedback, file a bug with component Speed>Bisection

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