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Issue 758588 link

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Issue metadata

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



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27.2% regression in blink_perf.bindings at 495196:495371

Project Member Reported by nzolghadr@chromium.org, Aug 24 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Aug 24 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=758588

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=90f4cc960edd52c4234bda43df7802db75c3432554081d70edff9cc4c800442c


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

android-webview-nexus6
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Aug 25 2017

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

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

Hi kinuko@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 : Kinuko Yasuda
  Commit : d19f47377d5fc9842af76b8633eb8bf620d07bca
  Date   : Thu Aug 17 17:52:26 2017
  Subject: Lazily create Blob URLLoaderFactory even with URLLoaderFactoryGetter in renderer

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : blink_perf.bindings
  Metric       : set-attribute-rare/set-attribute-rare
  Change       : 19.30% | 110.972098142 -> 89.5593966589

Revision             Result                   N
chromium@495195      110.972 +- 1.23111       6      good
chromium@495206      111.322 +- 0.755263      6      good
chromium@495209      103.296 +- 0.736351      6      good
chromium@495211      112.069 +- 0.693626      6      good
chromium@495212      93.6961 +- 0.467213      6      bad       <--
chromium@495217      94.2184 +- 1.37382       6      bad
chromium@495239      86.6816 +- 0.957973      6      bad
chromium@495283      90.2533 +- 0.875502      6      bad
chromium@495371      89.5594 +- 0.411371      6      bad

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 blink_perf.bindings

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970368888450490720


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

Comment 4 by 42576172...@developer.gserviceaccount.com, Aug 25 2017

 Issue 758592  has been merged into this issue.
Cc: jbroman@chromium.org
kinuko, any update on this? ccing jbroman, blink_perf.bindings owner, to help with setting priority.
Status: WontFix (was: Assigned)
WontFix-ing due to lack of activity.

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