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On Tue, 26 May 2009 06:00:10 +0100 |
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Stroller <stroller@××××××××××××××××××.uk> wrote: |
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> Looks like `echo media-video/mplayer mmx mmxext sse sse2 ssse3 3dnow |
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> 3dnowext >> /etc/portage/package.use` unless someone else is able to |
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> be more informative. |
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> |
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> Stroller. |
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> |
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Yes, just add "cpudetection" to those or put it in in make.conf. |
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If you want to set the proper flags there's no other way but |
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to check what features the particular CPU model supports. The only sure |
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thing is that no Intel CPUs support AMD's 3now and 3dnowext. |
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Everything else depends on the moment the particular model was |
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released, because those features were not initially specified but |
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being added as time passes by. |
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Some random thoughts... |
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The packages that could utilize some of those cpu instruction sets are |
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not so many. Try "euse -i sse" for example and see which programs would |
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be affected if you change it. Then...trial and error. :) |
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Last but not least. If you have a (supported model of) NVidia |
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video card and don't mind using the closed source driver, you could try |
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VDPAU. It's a technology for Linux for offloading video decoding from |
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CPU to GPU. For a reference mplayer takes about 30% on my CPU to play |
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HD clips normally and about 2% when using VDPAU. |
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HTH |
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-- |
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Best regards, |
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Daniel |
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