john gay johngayeircomnet sun 28 jul 2002 0629 ilugadminlinuxie wrote message 3 john moran ilug subject ilug optimizing pentium pt2 date sat 27 jul 2002 171039 0100 gcc glibc binutils lfs site says optimise already determines system youre compiling optimises thats understanding works anyway john subject ilug optimizing pentium pt2 understanding since fould linux programs libraries default compiled optimizing level 2 gcc options g o2 compiled specific cpu intel platforms software compiled i386 processors default dont wish run software machines might want change default compiler options compiled higher optimization level generate code specific architecture therefore export cflagso3 march cxxflagscflags minimal set optimizations ensures works almost platforms option march compile binaries specific instructions cpu specified means cant copy binary lower class cpu execute optimizations need worry optimizations lfs says disable compiling gcc glibc however glibc seems likely candidate optimization since provides libs used even simple programs access system calls kernel im still waiting info gcc mailing list optimisingpatching gcc performance improvement far suggestion try using icc intels c compiler known work kernel user apps guess libs might need rewriting compile im prepared go length qt kde seems also gains made object prelinking also risks ill suck see either way im going get started building base today im still waiting dri patches gvx1 card itll probably several days im ready build x anyway cheers john gay irish linux users group iluglinuxie httpwwwlinuxiemailmanlistinfoilug unsubscription information list maintainer listmasterlinuxie sun 28 jul 2002 122805 0100 ilug ilug digest vol 1 2734 11 msgs