[Webkit-unassigned] [Bug 35678] New: [Qt] Using Javascript timers in QWebkit results in very high CPU usage

Wed Mar 3 05:57:08 PST 2010

https://bugs.webkit.org/show_bug.cgi?id=35678

           Summary: [Qt] Using Javascript timers in QWebkit results in
                    very high CPU usage
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Other
        OS/Version: Mac OS X 10.5
            Status: NEW
          Keywords: Qt
          Severity: Normal
          Priority: P2
         Component: New Bugs
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: vestbo at webkit.org


This bug report originated from issue QTBUG-3784
http://bugreports.qt.nokia.com/browse/QTBUG-3784

--- Description ---

opening the file below with arora resulted in high CPU usage on Windows (on
Linux, it works fine)


<div class="code panel" style="border-width: 1px;"><div class="codeContent
panelContent">
<pre class="code-xml"><span class="code-tag"><!DOCTYPE html PUBLIC <span
class="code-quote">"-//W3C//DTD XHTML 1.0 Transitional//EN"</span> <span
class="code-quote">"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"</span>></span>
<span class="code-tag"><html xmlns=<span
class="code-quote">"http://www.w3.org/1999/xhtml"</span>></span>
<span class="code-tag"><head></span>
    <span class="code-tag"><title></span>QWebKit test<span
class="code-tag"></title></span>
<span class="code-tag"><script type=<span
class="code-quote">"text/javascript"</span>></span>
    function nothing()
    {

    }
    window.setInterval(nothing,1000);
<span class="code-tag"></script></span>
<span class="code-tag"></head></span>

<span class="code-tag"><body></span>This is a test...<span
class="code-tag"></body></span>

<span class="code-tag"></html></span></pre>
</div></div>

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