[Ffmpeg-devel] Re: fastmemcpy in ffmpeg

Michel Bardiaux mbardiaux
Mon Sep 25 16:09:06 CEST 2006


Ronald S. Bultje wrote:
> Hi,
> 
> On Mon, 25 Sep 2006, Gunnar von Boehn wrote:
>> Just by
>> adding one prefetch instruction to the normal Linux memcpy you can speed
>> it up a lot 50%.
> [..]
> 
> So why don't you submit such work for inclusion in glibc? That way,
> everybody profits!
> 
> Regards,
> Ronald

The linux kernel already contains ultraoptimized versions of memcpy. If 
they're not in glibc, it is probably by choice.

-- 
Michel Bardiaux
R&D Director
T +32 [0] 2 790 29 41
F +32 [0] 2 790 29 02
E mailto:mbardiaux at mediaxim.be

Mediaxim NV/SA
Vorstlaan 191 Boulevard du Souverain
Brussel 1160 Bruxelles
http://www.mediaxim.com/




More information about the ffmpeg-devel mailing list