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This is an automatically generated e-mail. To reply, visit:
<a href="http://git.reviewboard.kde.org/r/105892/">http://git.reviewboard.kde.org/r/105892/</a>
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<p style="margin-top: 0;">On August 6th, 2012, 10:31 a.m., <b>Sebastian Trueg</b> wrote:</p>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">The reason for the queue was to avoid having the thread block until all folders are added. I fear that with this change starting the service and then shutting it down will always result in a forceful killing. Sure, for production use this is better in most cases...</pre>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I don't understand. How will it result in a forceful killing?
The addition of watches is still being done asynchronously, 100 watches a time. Just like it was before, the only difference is that we're no longer storing the file paths in a queue. We're now storing the dir iterators.</pre>
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<p>- Vishesh</p>
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<p>On August 6th, 2012, 10:03 a.m., Vishesh Handa wrote:</p>
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<div>Review request for Nepomuk and Sebastian Trueg.</div>
<div>By Vishesh Handa.</div>
<p style="color: grey;"><i>Updated Aug. 6, 2012, 10:03 a.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;"> kinotify: Do not store the paths to be added
kinotify used a QQueue<QByteArray> to store all the directories which
need to be added. Since we use QDirIterator, each path is presented as a
QString which is then encoded to its QByteArray (QFile::encodeName).
This results in *large* chunks of memory being allocated, and then
slowly being deallocated.
Instead, we now use a QDirIterator, and do not store all the directories
which need to be added, we simply iterate over them. This way we do not
allocate large amounts of memory.
There is a large performance improvement as well. On my system, with
38829 directories, adding all the watches now takes only about 10 seconds,
instead of about 65.
Patch possible due to massif output provided by Jure Repinc <jlp@holodeck1.com>.
Thanks a lot.
tldr: Use DFS instead of BFS -> Less memory consumption
BUG: 304476
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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;">kinotify tests pass successfully.</pre>
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<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="http://bugs.kde.org/show_bug.cgi?id=304476">304476</a>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>services/filewatch/kinotify.cpp <span style="color: grey">(e8843c8)</span></li>
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<p><a href="http://git.reviewboard.kde.org/r/105892/diff/" style="margin-left: 3em;">View Diff</a></p>
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