> Sascha Siegel schrieb: >> Hi, >> >> can someone tell my whats the reason for building the arch-kernel with >> "# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set"? >> >> Thank you! > > Optimizing for size sacrifices performance. Read the gcc documentation > about the -O{1,2,3,s} options. I remember a few kernel devs recommending size. It was to reduce the number of cache misses and improve CPU cache utilisation, avoiding RAM and L2 cache. Fedora/RHEL appears to optimize for size. That was a while ago when I was doing some kernel stuff.... so I could be wrong.