Am Di, den 13.01.2004 schrieb Matt H. um 02:57: > On Mon, 12 Jan 2004 09:04:33 -0300, Alexandre Strube wrote: > > > Take a look at which kernel version you're using... > > I currently have kernel 2.4.22-1.2140.nptl. Do you mean what architecture > it was compiled for? In that case, "athlon". That's why I thought > $HOSTTYPE and $MACHTYPE should reflect this. > > On Mon, 12 Jan 2004 18:09:31 +0100, Alexander Dalloz wrote: > > > What you see on you Athlon system is the situation and ok. Fedora Core 1 > > is still i386 based, only glibc may vary like on your's which is i686, > > and the kernel is CPU dependent compiled. You see last by using "uname > > -a". > > So it's common to use the generic "i386" branding even with today's > generation processors and architecture? Well, you can build a whole system to a more reacent architecture type like i686, but as far as I read about, you will not gain significant improvents. The Gentoo guys, which love their compiling around the clock for speed gains, could never proove the performance boost. I am sure it is a myth. On gentoo.org itself you can see some values about different compiled systems and their response time and it showed me, that their is at best a statistical difference. > > What do you expect by having a i686 based architecture compile? You > > might only gain just a few percentages of speed, if though. > > If I was to recompile my kernel for "i686" or "athlon", this would not be > beneficial to system performance and efficiencies? It is a difference to build a kernel with right switch for your processor type and to build normal applications with architecutre compiler flags. > > As far as I see at the rpm macros, Fedora is using prelinking, which > > normally brings you most performance gains using different applications. > > This prelinking you mentioned is interesting. I read the howto you linked > to and would like to investigate more with it. Can you tell me if it is > done internally or must I manually enter `/uss/sbin/prelink -afmR` in > order to use this feature? Sorry, I am no gcc professionel. the prelink package on Fedora is maintained by jakub@xxxxxxxxxxx I think it would be helpful if he or some other compiler guys would reply to your question. But prelinking should be active if you look at -rw-r--r-- 1 root root 267839 12. Jan 04:02 /etc/prelink.cache -rw-r--r-- 1 root root 669 1. Jul 2003 /etc/prelink.conf So prelink.cache is written on maintenance run every moring at 4:02 by the daily cron run and library directories are defined in prelink.conf. > > Alexander > > Matt Regards Alexander -- Alexander Dalloz | Enger, Germany PGP key valid: made 13.07.1999 PGP fingerprint: 2307 88FD 2D41 038E 7416 14CD E197 6E88 ED69 5653
