From owner-freebsd-questions@FreeBSD.ORG Fri Mar 18 17:35:26 2005 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id C50D216A4CE for ; Fri, 18 Mar 2005 17:35:26 +0000 (GMT) Received: from april.chuckr.org (april.chuckr.org [66.92.151.30]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6350F43D46 for ; Fri, 18 Mar 2005 17:35:26 +0000 (GMT) (envelope-from chuckr@chuckr.org) Received: from [66.92.151.195] (july.chuckr.org [66.92.151.195]) by april.chuckr.org (Postfix) with ESMTP id B7BC512122; Fri, 18 Mar 2005 12:36:06 -0500 (EST) Message-ID: <423B1135.30302@chuckr.org> Date: Fri, 18 Mar 2005 17:34:45 +0000 From: Chuck Robey User-Agent: Mozilla Thunderbird 1.0 (X11/20050316) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Boris Spirialitious References: <20050318172739.61631.qmail@web90208.mail.scd.yahoo.com> In-Reply-To: <20050318172739.61631.qmail@web90208.mail.scd.yahoo.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit cc: freebsd-questions@freebsd.org Subject: Re: FreeBSD 4.x Opteron Question X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Mar 2005 17:35:27 -0000 Boris Spirialitious wrote: > --- Boris Spirialitious > wrote: > >>--- Matthew Seaman >>wrote: >> >>>On Tue, Mar 15, 2005 at 08:50:22AM -0800, Boris >>>Spirialitious wrote: >>> >>>>When opteron support start for Freebsd? I have >>> >>>4.9. >>> >>>>is supported? Or 4.11 better? I can't use 5.x. >>> >>>Well, AMD64 support as a tier-1 platform only came >>>in with 5.x, so >>>you're S.O.L. if you have to use a 4.x release >>>version. >>> >>> >>>>Will a i386 disk boot on opteron system? Can I >>>>use same disk image for intel and amd MBs? Any >>>>big problems? >>> >>>You can generally run AMD64 machines in IA32 mode >> >>-- >> >>>but what would be >>>the point? All you get then is a machine that >> >>costs >> >>>more than an >>>equivalent IA32 box and that probably performs >>>worse. >> >>That is very curious to say. Isn't the advantage >>of Opteron the superior IO architecture? There is >>not much advantage with 64 bit computing. What is >>faster about it? Pointers are bigger, so it use >>more cache for less. NOt much 64bit math in >>OS. Why do you say it will perform worse? Boris, I am sure you realize that a great deal of the 64 bit IO architecture is leveraged from the 64 bit instructions set, that allows things like 64 bit fetches. Will there be a gain without using the 64 bit instruction set? Yes. Will it be as large? No. >> >>Boris > > > I am waiting for your answer. > > Boris > > > > __________________________________ > Do you Yahoo!? > Take Yahoo! Mail with you! Get it on your mobile phone. > http://mobile.yahoo.com/maildemo > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"