Messages in this thread | | | Date | Mon, 12 Jan 2009 23:27:26 +0300 | From | Evgeniy Polyakov <> | Subject | Re: RFC: Network privilege separation. |
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On Mon, Jan 12, 2009 at 10:15:27PM +0200, Rémi Denis-Courmont (rdenis@simphalempin.com) wrote: > > I don't think that's given. It would need some restructuring, > > but I think the end result would be likely worth it. > > A normal DVD would be over 30 megabytes per seconds once decoded, just for the > video. And remember vmsplice() is not allowed by SECCOMP. Media players have > assembly-coded memory copy optimizations (like the kernel) for some reason.
Just a note: memory copy is way too faster than 30 mb/s, and very likely it is not the memory copy, but (de)compression, since likely all modern codecs are limited by the CPU and not the memory bandwidth.
-- Evgeniy Polyakov -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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