From owner-freebsd-current Thu Feb 27 13: 2:32 2003 Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3253337B401 for ; Thu, 27 Feb 2003 13:02:31 -0800 (PST) Received: from alpha.siliconlandmark.com (alpha.siliconlandmark.com [209.69.98.4]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4E2B543FBF for ; Thu, 27 Feb 2003 13:02:30 -0800 (PST) (envelope-from andy@siliconlandmark.com) Received: from alpha.siliconlandmark.com (localhost [127.0.0.1]) by alpha.siliconlandmark.com (8.12.7/8.12.6) with ESMTP id h1RL2PKx013735; Thu, 27 Feb 2003 16:02:26 -0500 (EST) (envelope-from andy@siliconlandmark.com) Received: from localhost (andy@localhost) by alpha.siliconlandmark.com (8.12.7/8.12.6/Submit) with ESMTP id h1RL2L3t013732; Thu, 27 Feb 2003 16:02:25 -0500 (EST) (envelope-from andy@siliconlandmark.com) X-Authentication-Warning: alpha.siliconlandmark.com: andy owned process doing -bs Date: Thu, 27 Feb 2003 16:02:21 -0500 (EST) From: Andre Guibert de Bruet To: Nuno Teixeira Cc: freebsd-current@FreeBSD.ORG Subject: Re: -O2 considered harmful In-Reply-To: <20030227191739.GA607@gw.tex.bogus> Message-ID: <20030227155126.O91528@alpha.siliconlandmark.com> References: <20030227025155.61529.qmail@web40310.mail.yahoo.com> <20030227191739.GA607@gw.tex.bogus> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Thu, 27 Feb 2003, Nuno Teixeira wrote: > On Wed, Feb 26, 2003 at 06:51:55PM -0800, Rhett Monteg Hollander wrote: > > I understand it. Anyway, there is known problems by using -mmmx or > -m3dnow on builworld/buildkernel? Well, I used allways march=pentiumpro > on stable and now pentium2 on current without any problem. I've been using -march=athlon-xp -O2 -mmmx -m3dnow and -msse on my desktop for close to a month without any noticeable quirks. I rebuild world twice daily and kernel every other day... > I use some applications like grip, lame, mplayer, etc. Maybe I get some > extra performance running this apps. With -mmmx, -m3dnow or -msse, you're going to get a noticeable improvement, especially with lame and mplayer. I recommend compiling programs that use sound or graphics with high optimization cflags and keeping moderately conservative options for the base system and kernel. Regards, > Andre Guibert de Bruet | Enterprise Software Consultant > > Silicon Landmark, LLC. | http://siliconlandmark.com/ > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message