On Tue, Feb 03, 2009 at 12:11:59PM -0500, Warren Togami wrote: > Jakub recommended doing comparison tests of -m32 -march=i586 > -mtune=generic vs. -m32 -march=i686 -mtune=generic with Spec2k and > Spec2006 benchmark tools. Anyone interested in trying this? > > In related news, cebbert wants to do the following to the F-11 kernel: > - Eliminate the current i686 kernel. > - i686 hardware would get i686 PAE by default. > - i586 kernel becomes i686, except without cmov. This is primarily so > people don't complain when they realize they have the "i586" kernel. Just a note, I believe that the ia32 support should "concentrate" on netbooks (So Intel Atom), those are the only new things on the market that can't run x86_64, and the userbase of those will just grow and every percent of extra performance will make many people happy. A benchmark run on one of those might be very useful to make the final decision, not that the more server-oriented tests are very useful for the typical netbook userbase. And then there's the "should work even with this" decision, and i686 without cmov is a reasonable minimum there. Could be i686+cmov or +sse2, but those will make a lot of people unhappy. -- Pekka Pietikainen -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
