On Fri, Jan 30, 2009 at 6:18 PM, Jan Kratochvil <jan.kratochvil@xxxxxxxxxx> wrote: [snip] > Guessing some software (codecs?) may fallback on 64-bit to unoptimized C code > instead of some assembly one but Fedora would at least show the usefulness of > the updates of such software for the x86_64 arch. Try GLIBC: For example, x86_64 exp() (and expf()) is *much* slower than x86. (At least as of my testing in Fedora 9, I haven't measured F10… the point being that these differences can lurk in unexpected places. They need to be fixed in anycase, but useful to keep in mind. -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
