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.
