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<th>Priority</th>
<td>medium
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<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - xf86-video-openchrome-0.3.3: speed up memcpy on NetBSD"
href="https://bugs.freedesktop.org/show_bug.cgi?id=65272">65272</a>
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<th>Assignee</th>
<td>openchrome-devel@lists.freedesktop.org
</td>
</tr>
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<th>Summary</th>
<td>xf86-video-openchrome-0.3.3: speed up memcpy on NetBSD
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>OS</th>
<td>NetBSD
</td>
</tr>
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<th>Reporter</th>
<td>tk@giga.or.at
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<th>Hardware</th>
<td>Other
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Component</th>
<td>Driver/openchrome
</td>
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<th>Product</th>
<td>xorg
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<pre>Created <span class=""><a href="attachment.cgi?id=80166" name="attach_80166" title="Patch for the issue described above.">attachment 80166</a> <a href="attachment.cgi?id=80166&action=edit" title="Patch for the issue described above.">[details]</a></span>
Patch for the issue described above.
>From NetBSD's xsrc:
Remove a couple '#ifdef linux's to let the driver use optimized memcpy
functions on NetBSD for video copy. Gives nearly 2x performance on my
test system (previously "kernel" memcpy was always used):
CHROME(0): Benchmarking video copy. Less time is better.
CHROME(0): Timed libc YUV420 copy... 3000272. Throughput: 315.6 MiB/s.
CHROME(0): Timed kernel YUV420 copy... 3024946. Throughput: 313.0 MiB/s.
CHROME(0): Timed SSE YUV420 copy... 1591352. Throughput: 595.0 MiB/s.
CHROME(0): Timed MMX YUV420 copy... 2566279. Throughput: 369.0 MiB/s.
CHROME(0): Ditching 3DNow! YUV420 copy. Not supported by CPU.
CHROME(0): Timed MMX2 YUV420 copy... 1696662. Throughput: 558.1 MiB/s.
CHROME(0): Using SSE YUV42X copy for video.
Originally from Jared McNeill <<a href="mailto:jmcneill@NetBSD.org">jmcneill@NetBSD.org</a>></pre>
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