Given that gcc 3.3 has been released and that it should generate better code perhaps it would be a good idea to build it and then use it. On Tue, 2003-06-10 at 15:10, Steve Snyder wrote: > On Monday 09 June 2003 11:59 pm, Christos E. Chrisostomidis wrote: > > Dear all, > > > > Most of the RPM packages shipped with RH9 (and older), come for a i386 > > target. > > > > I am having a pentium 4 box and I am currently using rpmbiuld --rebuild > > --target i686 to rebuild the SRPMs in order to optimize performance. > > > > I am trying to optimize packages such as sendmail, samba, squid etc. > > > > I am wondering if I need to specify any gcc/g++ compiler optimization > > flags, perhaps in the form of an rpmrc file. > > > > If this is the case, does anybody knows a good reference to look at so > > I can find the appropriate optflags to use ? > > As was recently discussed on this list, almost all the RHL binaries are > built with "-march=i386 -mcpu=i686". > > Given that you've got a Pentium4 machine, you're probably better off > building with "-march=pentium4". This, and any other desired compiler > switches, can be put in file /etc/rpmrc. > > Speaking of Pentium4 optimizations, note the the -msse and -msse2 options > are considered to be buggy (according to the developers on the GCC list) > in versions 3.2.x of the compiler. > > FYI. -- Jean Francois Martinez <jfm512@xxxxxxx>
