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This is an automatically generated e-mail. To reply, visit:
<a href="http://git.reviewboard.kde.org/r/112417/">http://git.reviewboard.kde.org/r/112417/</a>
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<p>Ship it!</p>
<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Looks good to me.</pre>
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<p>- Mark</p>
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<p>On August 31st, 2013, 7:16 p.m. UTC, Frank Meerkoetter wrote:</p>
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<div>Review request for Amarok.</div>
<div>By Frank Meerkoetter.</div>
<p style="color: grey;"><i>Updated Aug. 31, 2013, 7:16 p.m.</i></p>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Using callgrind it was very visible that amarok is spending an enormous amount of time to turn podcast episodes into tracks.
Initially i noticed that the PlaylistBrowserModel is calling Playlist::tracks().count() while it should be calling Playlist::trackCount().
Constructing a list of tracks is expensive for the case of Podcasts (as internally podcast episodes are converted into tracks which
get added to a new list). This change already improved the situation a bit, but the UI was still sluggish. Callgrind was still showing
that we are turning episodes into tracks - over and over.
To fix that i added a cache to the PodcastChannel. As long as the episodes haven't changed, there is no point in constructing
a new list of tracks each time tracks() is called.
With that second fix the UI is now pretty useable.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Tested with http://www.justing.com.cn/justpod/justpod_ch.xml</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>src/browsers/playlistbrowser/PlaylistBrowserModel.cpp <span style="color: grey">(281694a)</span></li>
<li>src/core-impl/podcasts/sql/SqlPodcastMeta.h <span style="color: grey">(02a18d3)</span></li>
<li>src/core-impl/podcasts/sql/SqlPodcastMeta.cpp <span style="color: grey">(20bcaff)</span></li>
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<p><a href="http://git.reviewboard.kde.org/r/112417/diff/" style="margin-left: 3em;">View Diff</a></p>
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