RFC: Optimizing for 386

Dag Wieers dag at wieers.com
Thu Jan 20 07:36:14 UTC 2005


On Wed, 19 Jan 2005, Chris Adams wrote:

> Once upon a time, Jamie Zawinski <jwz at jwz.org> said:
> > Chris Adams wrote:
> > > Some other RPMs have code that detects i386 vs. i686 vs. Athlon
> > > (really "regular" vs. MMX/SSE/etc.) at runtime and uses the best
> > > available.
> > 
> > Just curious -- which packages are those?  (Besides X and kernel.)
> 
> I think some of the video related libraries do, but I don't know which
> right off.  A quick check on my system (FC2 still) looks like:
> 
> /usr/X11R6/lib/libOSMesa.so.4 checks for MMX, 3DNow!, SSE
> /usr/bin/gimp checks for MMX, 3DNow!, SSE
> /usr/bin/xmms may use MMX, 3DNow!
> /usr/lib/libFLAC.so.4 may use cmov, MMX, SSE, SSE2, 3DNow!
> /usr/lib/libSDL-1.2.so.0 may use MMX, SSE
> /usr/lib/libgstreamer-0.8.so may use MMX, 3DNow!, SSE
> /usr/lib/libasound.so.2 may use MMX

I'm wondering, did you run a command to get such a list ?

--   dag wieers,  dag at wieers.com,  http://dag.wieers.com/   --
[all I want is a warm bed and a kind word and unlimited power]




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