From owner-freebsd-stable Wed Mar 7 1:12:49 2001 Delivered-To: freebsd-stable@freebsd.org Received: from klima.physik.uni-mainz.de (klima.Physik.Uni-Mainz.DE [134.93.180.162]) by hub.freebsd.org (Postfix) with ESMTP id 0EF6637B71A for ; Wed, 7 Mar 2001 01:12:42 -0800 (PST) (envelope-from ohartman@klima.physik.uni-mainz.de) Received: from klima.Physik.Uni-Mainz.DE (klima.Physik.Uni-Mainz.DE [134.93.180.162]) by klima.physik.uni-mainz.de (8.11.3/8.11.3) with ESMTP id f279G4b96767; Wed, 7 Mar 2001 10:16:04 +0100 (CET) (envelope-from ohartman@klima.physik.uni-mainz.de) Date: Wed, 7 Mar 2001 10:16:04 +0100 (CET) From: "Hartmann, O." To: Antony T Curtis Cc: Kris Kennaway , Subject: Re: ARCH flag in new make.conf In-Reply-To: <3AA5FAD0.CCDB49C7@abacus.co.uk> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Wed, 7 Mar 2001, Antony T Curtis wrote: :>Kris Kennaway wrote: :>> :>> On Wed, Mar 07, 2001 at 09:30:33AM +0100, Hartmann, O. wrote: :>> > Dear Sirs. :>> > :>> > I'm really confused and surprised by the fact, that with the upcoming new :>> > FreeBSD 4.3 in its make.conf we can choose architectural parameters for the :>> > CPU architecture. And I will tell you why. :> :> :> :>> I've been running NIS on FreeBSD with world and kernel compiled with :>> -march=pentiumpro for about 9 months with no ill effects. In fact :>> I've never heard of reports of bad code generation using the -march :>> settings -- it appears to be very stable. Are you sure you didn't :>> have a nonstandard optimization setting (-O2, etc) as well? :> :>I have world compiled with -O2 with no ill effect (that I have noticed) :>but if I compile the kernel with -O2, it looks okay but has problems :>with talking TCP/IP - seems to generate faulty checksums and some other :>quirks.... To put it simply, stable kernels are only with -O (in my :>experience) :> :>(however, I have compiled KLDs with -O2 with no ill effect) :> :>-- :>ANTONY T CURTIS Tel: +44 (1635) 36222 :>Abacus Polar Holdings Ltd Fax: +44 (1635) 38670 :>> Endless Loop: n., see Loop, Endless. :>> Loop, Endless: n., see Endless Loop. :>>  -- Random Shack Data Processing Dictionary :> As I said before in the list: kernel and other code were compiled with -O, not -O2. -- MfG O. Hartmann ohartman@klima.physik.uni-mainz.de ---------------------------------------------------------------- IT-Administration des Institut fuer Physik der Atmosphaere (IPA) ---------------------------------------------------------------- Johannes Gutenberg Universitaet Mainz Becherweg 21 55099 Mainz Tel: +496131/3924662 (Maschinensaal) Tel: +496131/3924144 FAX: +496131/3923532 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message