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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Huge memory usage (~10GB RAM) when running Dromaeo JavaScript Library Tests"
   href="https://bugs.webkit.org/show_bug.cgi?id=154593">154593</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Huge memory usage (~10GB RAM) when running Dromaeo JavaScript Library Tests
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>WebKit Nightly Build
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>JavaScriptCore
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>clopez&#64;igalia.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>bugs-noreply&#64;webkitgtk.org, cgarcia&#64;igalia.com, mcatanzaro&#64;igalia.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>I have noticed that when running the Dromaeo JavaScript Library Tests &lt;<a href="http://dromaeo.com/?jslib">http://dromaeo.com/?jslib</a>&gt; WebKit consumes a lot of memory (around [8-10]GB of RAM).

It seems that the huge increase of RAM usage happens when running the subtests &quot;DOM Modification (jquery)&quot;.

I am able to reproduce this both with the WebKitGTK+ MiniBrowser as also with Safari on MacOS when running with WebKit from trunk (r196976).

With the WebKitGTK+ MiniBrowser from the stable branch (2.10.7 branched in r188381 &lt;<a href="http://trac.webkit.org/wiki/WebKitGTK/2.10.x">http://trac.webkit.org/wiki/WebKitGTK/2.10.x</a>&gt;) the memory usage is a bit better, peaks around ~[4-5]GB.

With Safari from the system (MacOS 10.10.5) the memory usage is around ~3GB.

Chromium consumes around ~3GB, and Firefox consumes &quot;only&quot; ~1GB.</pre>
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