From owner-freebsd-hackers Mon Apr 10 3: 1:43 2000 Delivered-To: freebsd-hackers@freebsd.org Received: from hermes.research.kpn.com (hermes.research.kpn.com [139.63.192.8]) by hub.freebsd.org (Postfix) with ESMTP id C41F537B843 for ; Mon, 10 Apr 2000 03:01:40 -0700 (PDT) (envelope-from K.J.Koster@kpn.com) Received: from l04.research.kpn.com (l04.research.kpn.com [139.63.192.204]) by research.kpn.com (PMDF V5.2-31 #35196) with ESMTP id <01JO2J89I5ZI0014G6@research.kpn.com> for freebsd-hackers@FreeBSD.ORG; Mon, 10 Apr 2000 12:01:37 +0200 Received: by l04.research.kpn.com with Internet Mail Service (5.5.2650.21) id ; Mon, 10 Apr 2000 12:01:36 +0100 Content-return: allowed Date: Mon, 10 Apr 2000 12:01:33 +0100 From: "Koster, K.J." Subject: RE: What are the best gcc optimization options for Pentium 200 M To: "'Alexey N. Dokuchaev'" Cc: freebsd-hackers@FreeBSD.ORG Message-id: <59063B5B4D98D311BC0D0001FA7E452201313A8C@l04.research.kpn.com> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2650.21) Content-type: text/plain; charset="iso-8859-1" Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > > > CFLAGS= -O6 -mpentiumpro -march=pentiumpro -pipe -s > -fexpensive-optimizations -ffast-math > > > > COPTFLAGS= -O6 -mpentiumpro -march=pentiumpro -pipe -s > -fexpensive-optimizations -ffast-math > > > I'll bet you can beat all of those with regular system management optimizations. Killing daemons, using twm instead of kde, striping, buying motherboards with fast memory buses. All of those are proven to be stable, work on any UNIX (not just FreeBSD/pentium) and there's a whole lot of books and howto's: "System Performance Tuning", for example. Once you've done that, I don't think a mere -O6 is going to give you more than 1 or 2 percent of unstable extra performance. *shurg* Why bother? Kees Jan ============================================== You are only young once, but you can stay immature all your life To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message