>From what I've read and heard from people -fomit-frame-pointer doesn't really add much as far as performance is concerned. So you could probably leave that out without noticing any difference in performance. No need to recompile either way, though, as long as your system is currently working properly.
As far as your other optimisations are concerned you're probably squeezing as much performance out of your system as you're going to get using your current flags. Fooling with other options might squeeze out a few percentage points but most likely it will cause your system to become quite unstable. Jason On Sat, 2003-03-15 at 10:41, Dhruba Bandopadhyay wrote: > Hello, > > Here is my cflag variable. > > CFLAGS="-march=pentium4 -O3 -pipe -fomit-frame-pointer" > > (1) According to the CFlags Central thread on forums and the gcc manual > optimisations page (link [1]) the -O3 flag includes the > -fomit-frame-pointer optimisation. Is this right? If so, why are there > recommendations to include it in addition to -O3 (link [2&3]? > > [1]http://gcc.gnu.org/onlinedocs/gcc-3.2.2/gcc/Optimize-Options.html#Optimize%20Options > [2]http://www.freehackers.org/gentoo/gccflags/flag_gcc3.html (stable) > [3]http://www.freehackers.org/gentoo/gccflags/flag_gcc3opt.html > (experimental) > > (2) How can I make my Cflag above more aggressive to give better > performance? At the moment, it is quite basic and safe but I'm pretty > sure more can be done with it. Anyone have a P4 and can vouch for > additional optimisations? > > I am not willing to switch down to -march=pentium3 as I have had no > problems with pentium4. > > Much appreciated. > > Many thanks. > Dhruba Bandopadhyay. > > > -- > [EMAIL PROTECTED] mailing list -- [EMAIL PROTECTED] mailing list
