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Issue 759614 link

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Issue metadata

Status: Duplicate
Merged: issue 759038
Owner: ----
Closed: Aug 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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3.5% regression in dromaeo.domcoremodify at 495877:496231

Project Member Reported by kraynov@chromium.org, Aug 28 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Aug 28 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=759614

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=66f412c724851052fcfb574aceb8f52d9792e779ff095f2c684ec3baaaa4c202


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

linux-release
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Aug 28 2017

Mergedinto: 759038
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Michael Lippautz
  Commit : 146d898b6e27a3900dae50b497e24674d7d2adfb
  Date   : Mon Aug 21 09:24:08 2017
  Subject: [wrapper-tracing] NodeListsNodeData Align Oilpan and wrapper tracing

Bisect Details
  Configuration: linux_perf_bisect
  Benchmark    : dromaeo.domcoremodify
  Metric       : dom/dom
  Change       : 3.52% | 873.541667536 -> 842.789395644

Revision             Result                  N
chromium@495876      873.542 +- 13.94        6      good
chromium@495888      874.41 +- 25.2727       6      good
chromium@495890      885.766 +- 14.4993      6      good
chromium@495891      836.638 +- 12.3422      6      bad       <--
chromium@495894      841.917 +- 10.5085      6      bad
chromium@495899      837.397 +- 10.9991      6      bad
chromium@495921      843.528 +- 12.4624      6      bad
chromium@495965      846.767 +- 9.67423      6      bad
chromium@496054      838.848 +- 19.7627      6      bad
chromium@496231      842.789 +- 17.8567      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests dromaeo.domcoremodify

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970006124048136816


For feedback, file a bug with component Speed>Bisection

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