Date: Wed, 7 Mar 2001 10:16:04 +0100 (CET) From: "Hartmann, O." <ohartman@klima.physik.uni-mainz.de> To: Antony T Curtis <antony@abacus.co.uk> Cc: Kris Kennaway <kris@obsecurity.org>, <freebsd-stable@FreeBSD.ORG> Subject: Re: ARCH flag in new make.conf Message-ID: <Pine.BSF.4.33.0103071015220.17134-100000@klima.physik.uni-mainz.de> In-Reply-To: <3AA5FAD0.CCDB49C7@abacus.co.uk>
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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. :> :><snip> :> :>> 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
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