Mailinglist Archive: opensuse-factory (850 mails)

[Marc Collin <collinm@xxxxxxxxxxxxxxxx>]

Le mercredi 13 septembre 2006 11:04, Andreas Jaeger a écrit :
> Marc Collin <collinm@xxxxxxxxxxxxxxxx> writes:
> > i use suse 64bits since a couple of release and one thing i notice it's
> > slower than the 32 bits and slower than other 64 bits distribution
> > (fedora and mandrake)
> >
> > don't know if you use tuning option when you build...
>
> We do build with -O2.  Such a speed difference is interesting and I
> would be interested in the cause,
>
>
> Andreas

minimum to be done: -march=x86-64

i think x86 64 bits have minimum sse2

-mfpmath=sse2

-msse2
-funroll-all-loops 
-fomit-frame-pointer 
-ffast-math

could be nice if more optimization can be done
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