On Tue, Mar 21, 2006 at 04:17:13PM -0600, John Morris wrote: > On Tue, 2006-03-21 at 05:46, parta wrote: > > > I am wondering why people at redhat don't release fedora core for > > i686. I think it will be better on performace. > > If this isn't a FAQ it should be. RH (RHEL & Fedora) currently build > i386 packages with the optimizations set for Pentium4. This gets That's actually not true any longer. FC5 on i?86 is tuned with -mtune=generic, which is a new tuning that gives good results on common Intel and AMD CPUs (and others probably as well). We still (mostly) use just the i386 ISA, packages that use SSE usually select generic and SSE code based on runtime probing, libraries that use atomic instructions also deal with this individually and the only other major set of non-i386 instructions are conditional move instructions, which apparently don't give any advantages on CPUs like P4. Jakub -- fedora-test-list mailing list fedora-test-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-test-list