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List: kfm-devel
Subject: Re: Review Request: Implemented multithreading in KFileItemModelSortAlgorithm
From: "Emmanuel Pescosta" <emmanuelpescosta099 () gmail ! com>
Date: 2012-10-25 18:05:55
Message-ID: 20121025180555.30261.68415 () vidsolbach ! de
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This is an automatically generated e-mail. To reply, visit:
http://git.reviewboard.kde.org/r/107025/
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(Updated Oct. 25, 2012, 6:05 p.m.)
Review request for Dolphin and Frank Reininghaus.
Description
-------
Implemented multithreading in KFileItemModelSortAlgorithm.
If more than 100 items to sort and ideal thread count is greater than 1 -> =
sort them with parallelSort (2 Threads)
Use maximal 2 Threads, because more than 2 Threads are "slower" (more overh=
ead than speed up). (I also have a patch which uses n Threads for sorting, =
if you want test it ;)
Diffs (updated)
-----
dolphin/src/kitemviews/private/kfileitemmodelsortalgorithm.h 3a596df =
dolphin/src/kitemviews/private/kfileitemmodelsortalgorithm.cpp e0aac13 =
Diff: http://git.reviewboard.kde.org/r/107025/diff/
Testing
-------
About 2 seconds faster with sorting 500.000 files.
About 5 seconds faster with sorting 1.000.000 files.
Thanks,
Emmanuel Pescosta
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This is an automatically generated e-mail. To reply, visit:
<a href="http://git.reviewboard.kde.org/r/107025/">http://git.reviewboard.kde.org/r/107025/</a>
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<div>Review request for Dolphin and Frank Reininghaus.</div>
<div>By Emmanuel Pescosta.</div>
<p style="color: grey;"><i>Updated Oct. 25, 2012, 6:05 p.m.</i></p>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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solid #b8b5a0"> <tr>
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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;">Implemented \
multithreading in KFileItemModelSortAlgorithm.
If more than 100 items to sort and ideal thread count is greater than 1 -> sort them with \
parallelSort (2 Threads)
Use maximal 2 Threads, because more than 2 Threads are "slower" (more overhead than \
speed up). (I also have a patch which uses n Threads for sorting, if you want test it ;)</pre> \
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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#b8b5a0"> <tr>
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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;">About 2 seconds \
faster with sorting 500.000 files. About 5 seconds faster with sorting 1.000.000 files.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> (updated)</h1>
<ul style="margin-left: 3em; padding-left: 0;">
<li>dolphin/src/kitemviews/private/kfileitemmodelsortalgorithm.h <span style="color: \
grey">(3a596df)</span></li>
<li>dolphin/src/kitemviews/private/kfileitemmodelsortalgorithm.cpp <span style="color: \
grey">(e0aac13)</span></li>
</ul>
<p><a href="http://git.reviewboard.kde.org/r/107025/diff/" style="margin-left: 3em;">View \
Diff</a></p>
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