Cristian Rodríguez wrote:

Jonathan E. Brickman escribió:

...

Greetings. I am trying to rebuild glibc under OpenSUSE 10.3, optimizing for CPU, and am running into a peculiar problem. I am running the command:

Care to explain WHY are you doing this ? it isnt enough with our glibc packages ?

glibc: ***gentoo syndrome detected *** ;-P

;-PPP Might be gentoo-syndrome indeed, not quite sure. What it is, is when I recompiled glibc with CPU optimizations before, in Ark Linux and at least one or two others, I got a ~40% boost in subjective performance overall. Not unlike Swiftfox for WWW: http://getswiftfox.com/ The gains should be quite tremendous in multimedia libraries and the like. MMX/SSE/SSE2. I have heard mixed reviews of SSE3, not sure I will want to go there. But I do remember well that I noticed more gain from optimizing glibc, than I did from optimizing the kernel. I am curious to try a -O3 plus -march optimization routine, although -O3 might well break glibc, I was told that once. -march plus -O2 does do a whole lot of good, because of the memory management inherent in -march, even for lowly -march=pentium2 or -march=athlon. What my end goal is, is to set up sets of RPMs with CPU optimizations applied, to make it reasonably quick and easy to increase performance on OpenSUSE systems for several different CPUs. J.E.B. --------------------------------------------------------------------- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-packaging+help@opensuse.org

Please note that our glibc is already optimized for i686 by default for a similiar reason. So I don't think "athlon" will give you 40%

Greetings, Stephan

Probably not 40%, at least with simple -march. But I want to try 3dnow (for this CPU), and MMX and SSE for others, especially in combination with multimedia libraries and apps. Can you tell me why rpmbuild isn't working? J.E.B. --------------------------------------------------------------------- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-packaging+help@opensuse.org

Cristian Rodríguez wrote:

Please use "build" ;-)

Got it, tried it. If I understand things correctly, it has to install quite a large pile of packages to build the working chroot area. How much disk space is used, before building starts? I have 9G free in /, 20G free in /home. J.E.B. --------------------------------------------------------------------- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-packaging+help@opensuse.org