On Thu, 15 Mar 2007, Danny Pansters wrote:
On Thursday 15 March 2007 02:16, Gary Kline wrote:Two quick one for kernel and/or compiler wizards: first, is a 400Mz processor considered a 586 (for my KERNELCONF file)?Think its 686 (but really, leaving 486 and 586 in isn't going to slow down booting or anything!) I always say: Use GENERIC unless you have a good reason not to.Second, is it safe to do a buildworld with -O3? If there areNo. It's not supported if things break.stability concerns, I'll go with the default when I rebuild my 6.2 systems.The defaults should be fine. Also, like I said consider just using GENERIC and load the odd kmod if needed. Generally it's less headache and equal performance.thanks in advance, garyCheers, Dan
As Dan and Gary said -O3 isn't supported, and in many cases that "level of optimization" gets filtered out while compiling sections of FreeBSD. Besides, I've compiled stuff with -O3 and various optimizations in Gentoo Linux before, and let me say that it caused a great deal of headaches... that's why I stick with -O2 now, because it's better to have something in executable shape and a bit slower (arguably because some optimizations slow things down) than it is to have something run fast and break all the time. Some food for thought :). -Garrett _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
