From owner-freebsd-questions Sun Jan 12 08:32:52 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.4/8.8.4) id IAA04340 for questions-outgoing; Sun, 12 Jan 1997 08:32:52 -0800 (PST) Received: from mopsy.hobart.tased.edu.au (root@mopsy.hobart.TASed.EDU.AU [147.41.41.103]) by freefall.freebsd.org (8.8.4/8.8.4) with SMTP id IAA04335 for ; Sun, 12 Jan 1997 08:32:49 -0800 (PST) Received: from localhost (andrew@localhost) by mopsy.hobart.tased.edu.au (8.6.12/8.6.12) with SMTP id DAA02115 for ; Mon, 13 Jan 1997 03:32:46 +1100 Date: Mon, 13 Jan 1997 03:32:44 +1100 (EST) From: Andrew X-Sender: andrew@mopsy.hobart.tased.edu.au To: questions@freebsd.org Subject: Compiling kernel with optimisation Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-questions@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Hi all, I just noticed that when compiling a kernel it is done with the -O flag. Would there be much speed improvement in the sytem if it was done with -O3? Would this break the kernel or is the added time it takes to compile not worth the benfits? I'd try myself but it takes me 4.5 hours just to do the kernel with -O :-( Andrew