[MPlayer-dev-eng] Re: [SURVEY] change default CPU target when compiled with runtime CPU detection

Rich Felker dalias at aerifal.cx
Tue Nov 15 05:26:25 CET 2005


On Tue, Nov 15, 2005 at 05:57:32AM +0200, Jan Knutar wrote:
> On Monday 14 November 2005 18:21, Matthias Wieser wrote:
> 
> > * Pentium4 needs very special sheduling which has not much in common with
> >   optimal sheduling for Athlon, Pentium3, Pentium-M,...
> 
> Although, the Athlon is made for running unoptimized code and wont do too
> badly on  P4 optimized code :-)

P4-optimized code is not "unoptimized", it's "anti-optimized". i.e.
stupid things which should be slow are done because they're the only
way to make it perform well on the P4. :)

IMO the -mcpu setting should be either i686 or athlon. Definitely not
P4.

Rich




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