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Issue 759717 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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12% regression in blink_perf.dom at 495877:496047

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=759717

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=b00b31f3b535844120a50564cd1f8196b8c8bb104f5d33909f7dededd9300f4b


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

android-nexus7v2
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Aug 29 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: android_nexus7_perf_bisect
  Benchmark    : blink_perf.dom
  Metric       : select-multiple-add/select-multiple-add
  Change       : 9.70% | 49.5313971238 -> 44.7263684366

Revision             Result                   N
chromium@495876      49.5314 +- 1.04147       6      good
chromium@495887      49.9667 +- 1.04854       6      good
chromium@495890      49.7289 +- 1.30468       6      good
chromium@495891      45.3956 +- 1.00493       6      bad       <--
chromium@495892      46.2204 +- 0.598503      6      bad
chromium@495893      46.3804 +- 1.12404       6      bad
chromium@495898      46.1619 +- 1.02892       6      bad
chromium@495919      46.642 +- 0.571972       6      bad
chromium@495962      45.7751 +- 1.25235       6      bad
chromium@496047      44.7264 +- 0.444034      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 blink_perf.dom

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8969998642182766928


For feedback, file a bug with component Speed>Bisection

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