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<base href="https://bugs.webkit.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Running Ember.JS app with web inspector open runs very slow / beachballs"
href="https://bugs.webkit.org/show_bug.cgi?id=158117">158117</a>
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<th>Summary</th>
<td>Running Ember.JS app with web inspector open runs very slow / beachballs
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>Product</th>
<td>WebKit
</td>
</tr>
<tr>
<th>Version</th>
<td>WebKit Nightly Build
</td>
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<th>Hardware</th>
<td>Macintosh
</td>
</tr>
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<th>OS</th>
<td>OS X 10.11
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>Normal
</td>
</tr>
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<th>Priority</th>
<td>P2
</td>
</tr>
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<th>Component</th>
<td>Web Inspector
</td>
</tr>
<tr>
<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>johnt519@gmail.com
</td>
</tr>
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<th>CC</th>
<td>bburg@apple.com, graouts@webkit.org, joepeck@webkit.org, mattbaker@apple.com, nvasilyev@apple.com, timothy@apple.com, webkit-bug-importer@group.apple.com
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<pre>Created <span class=""><a href="attachment.cgi?id=279881" name="attach_279881" title="Ember.JS application">attachment 279881</a> <a href="attachment.cgi?id=279881&action=edit" title="Ember.JS application">[details]</a></span>
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 (<a href="http://nodejs.org">http://nodejs.org</a>); Install Ember.JS (<a href="http://emberjs.com">http://emberjs.com</a>); install bower (npm -g install bower); install ember-cli (<a href="http://ember-cli.com">http://ember-cli.com</a>)
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:
<a href="http://localhost:4200/teams">http://localhost:4200/teams</a>
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.</pre>
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