On Saturday 12 July 2003 20:45, Meka[ni] wrote: > On Saturday 12 July 2003 09:22, Andrew Gaffney wrote: > > Using those CFLAGS (athlon-mp instead of xp...typo), I did a base > > install of Gentoo. The bootstrap took 49 minutes. The 'emerge system' > > took 50 minutes. I love this system! :) > > > > Andrew Gaffney wrote: > > > I'm installing Gentoo on a dual Athlon MP 2200 system that I just > > > built. What CFLAGS are other people with this type of hardware using? > > > <http://www.freehackers.org/gentoo/gccflags/flag_gcc3.html> recommends: > > > > > > CHOST="i686-pc-linux-gnu" > > > CFLAGS="-march=athlon-xp -O3 -pipe -fomit-frame-pointer" > > > CXXFLAGS="-march=athlon-xp -O3 -pipe -fomit-frame-pointer" > > > > > > Are these good enough? This machine will be a production server, so > > > nothing overly agressive. Thanks. > > Maybe adding -ffast-math would'n be bad. It is not agresive even for those > programs that are CFLAGS buggy, but it means a lot for the performance. > Good luck. :o)
I have an Athlon XP 1800+ and am using CFLAGS="-march=athlon-xp -O2 -pipe -fomit-frame-pointer -mfpmath=sse". I was using -O3 but read that it can be slower than -O2 on systems that don't have a large CPU cache. I believe that the cache on my system is only 64K and so tried recompiling everything with -O2 and have found it to be significantly faster. Jason -- [EMAIL PROTECTED] mailing list
