[MPlayer-users] mp3lib/ffmp3 performance issues on via c7

[Robert Henney]

On Fri, Jun 20, 2008 at 12:31:54PM +0200, ACS wrote:
> For a PII, mp3lib uses the mmx optimized assembler routines.
> These routines run at about 50...55% of the cpu load compared to compiled 
> i386 C source. (recently tested this myself on mpg123 on P3. mpg123 uses 
> similar libraries as mp3lib)

if you're implying that mmx is disabled in mplayer when compiled for
the c7 processor, that could explain the benchmark results.  however
that would be a bug in mplayer (or mplayer's build system) since the
c7 has mmx.  or perhaps the audio codecs are choosing to not execute
the mmx optimized routines themselves on the c7 for some reason?