[Webkit-unassigned] [Bug 158117] New: Running Ember.JS app with web inspector open runs very slow / beachballs

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu May 26 05:47:47 PDT 2016


            Bug ID: 158117
           Summary: Running Ember.JS app with web inspector open runs very
                    slow / beachballs
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Macintosh
                OS: OS X 10.11
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: johnt519 at gmail.com
                CC: bburg at apple.com, graouts at webkit.org,
                    joepeck at webkit.org, mattbaker at apple.com,
                    nvasilyev at apple.com, timothy at apple.com,
                    webkit-bug-importer at group.apple.com

Created attachment 279881
  --> https://bugs.webkit.org/attachment.cgi?id=279881&action=review
Ember.JS application

When running the attached Ember.JS application, with the web inspector open, Safari takes a very long time to respond, sometimes showing the beachball.

To reproduce:

Requirements -- Install node (http://nodejs.org); Install Ember.JS (http://emberjs.com); install bower (npm -g install bower); install ember-cli (http://ember-cli.com)

Extract the attached .zip file into a directory
In a Terminal window, change into the extracted directory and execute the commands:
    npm install
    bower install

Start up the application:
    ember server

In a new Safari window, navigate to the app:

Without the Web Inspector open, clicking to navigate through the paged data, Safari responds almost instantly

Open the Web Inspector

Now, when navigating through the paged data, Safari takes a few seconds to respond, sometimes long enough to show the beachball cursor.

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You are the assignee for the bug.
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