<table><tr><td style="">jtamate added a comment.
</td><a style="text-decoration: none; padding: 4px 8px; margin: 0 8px 8px; float: right; color: #464C5C; font-weight: bold; border-radius: 3px; background-color: #F7F7F9; background-image: linear-gradient(to bottom,#fff,#f1f0f1); display: inline-block; border: 1px solid rgba(71,87,120,.2);" href="https://phabricator.kde.org/D10857" rel="noreferrer">View Revision</a></tr></table><br /><div><div><blockquote style="border-left: 3px solid #8C98B8;
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<div style="font-style: normal;
padding-bottom: 4px;">In <a href="https://phabricator.kde.org/D10857#214607" style="background-color: #e7e7e7;
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color: black;text-decoration: none;" rel="noreferrer">D10857#214607</a>, <a href="https://phabricator.kde.org/p/dfaure/" style="
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color: rgb(107, 116, 140);"><p>I'm not opposed to the idea, but measuring CPU usage is a rather misleading indicator. What if it takes 10 times longer, because it's progressing much more slowly? ;)</p>
<p>Please at least measure with QElapsedTimer around the sorting (not to be committed, just to gather numbers about the actual performance of this from a user's point of view).<br />
I'm interested in the result ;)</p></div>
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<p>The results are strange. All the results are measured sorting 50.000 small files:</p>
<p>Both Qt are the same version from opensuse.</p>
<p>In an i5, why the difference is so big? recent cpu bugs?<br />
qSort in i3 <br />
274764, 276060 (with 3 directories), 365878, 424506 (without directories)<br />
std::sort in i3<br />
940, 995 (with 3 directories), 2472, 2539 (without directories)</p>
<p>In AMD the results are closer, qSort wins<br />
qSort in AMD<br />
658, 726, 695, 683, 676, 666, 649, 684, 666 (without directories)<br />
std:sort in AMD<br />
843, 839, 878, 896, 925 (without directories)</p></div></div><br /><div><strong>REPOSITORY</strong><div><div>R241 KIO</div></div></div><br /><div><strong>REVISION DETAIL</strong><div><a href="https://phabricator.kde.org/D10857" rel="noreferrer">https://phabricator.kde.org/D10857</a></div></div><br /><div><strong>To: </strong>jtamate, Frameworks, dfaure<br /><strong>Cc: </strong>markg, apol, michaelh<br /></div>