Changing CFLAGS for i386 packages on x86_64 (benchmarks included)
dragoran
dragoran at feuerpokemon.de
Sun Jul 16 12:21:58 UTC 2006
Dave Jones wrote:
> On Sun, Jul 16, 2006 at 02:10:22PM +0200, dragoran wrote:
> > I did same benchmarks using flops.c (attached) the results are attached
> > to it seems that
> > -march=k8 -mtune=k8 -m32 is the fastes but not by much ...
> > the last one (-m64) is weird (much slower!!) no -OX was used.
>
> If you were running a recent kernel from rawhide, you may want
> to re-run these tests, as there was an fpu optimisation in there
> that may have been responsible for spurious sigfpe's that some
> apps have been getting. If that patch was to blame, then it's
> possible there may have been other side-effects.
>
>
I have run this benchmarks on my FC5 box I can my rawhide box later if
this helps fixing this bug...
> Todays rawhide has it reverted.
>
> Dave
>
>
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