Why are there only i686 and i586 Version of glibc and kernel?

[Dax Kelson]

On Mon, 2004-05-31 at 09:39 -0400, Jakub Jelinek wrote:
> On Mon, May 31, 2004 at 09:22:04AM +0200, dragoran wrote:
> > Why not add a glibc and kernel which are optimized for pentium 4 in FC3 
> > ? This would increase the perfomance on newer PC but also works on older 
> > ones by still including the i686 and i586 versions.
> 
> Starting with FC3, .i386.rpm and .i686.rpm packages will be compiled
> with -march{3,6}86 -mtune=pentium4, so although they will run on
> i386 (resp. i686), they will be optimized for P4 (Athlons and newer AMD
> chips run P4 optimized code without noticeable performance hit).
> 
> 	Jakub

How does this impact Pentium-M processors (Banias and Dolthan) which are
some sort of P3/P4 hybrid that gets more work done per clock cycle that
straight up P4s.

I thought I heard that Intel recently announced that in the future their
desktop CPUs would be using the Dolthanesque CPUs -- and aren't laptops
about to outsell desktops?

Just curious, since I just ordered a Thinkpad T42p with a Dolthan cpu.

Dax Kelson