From owner-freebsd-amd64@FreeBSD.ORG Sat Jan 22 00:13:21 2005 Return-Path: Delivered-To: freebsd-amd64@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id EA35016A4CE for ; Sat, 22 Jan 2005 00:13:21 +0000 (GMT) Received: from dragon.nuxi.com (trang.nuxi.com [66.93.134.19]) by mx1.FreeBSD.org (Postfix) with ESMTP id A7FD843D41 for ; Sat, 22 Jan 2005 00:13:21 +0000 (GMT) (envelope-from obrien@NUXI.com) Received: from dragon.nuxi.com (obrien@localhost [127.0.0.1]) by dragon.nuxi.com (8.13.1/8.13.1) with ESMTP id j0M0DKiJ040682; Fri, 21 Jan 2005 16:13:20 -0800 (PST) (envelope-from obrien@dragon.nuxi.com) Received: (from obrien@localhost) by dragon.nuxi.com (8.13.1/8.13.1/Submit) id j0M0DK39040681; Fri, 21 Jan 2005 16:13:20 -0800 (PST) (envelope-from obrien) Date: Fri, 21 Jan 2005 16:13:20 -0800 From: "David O'Brien" To: Jeff Behl Message-ID: <20050122001320.GA39743@dragon.nuxi.com> References: <41F198F8.9020608@fastclick.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <41F198F8.9020608@fastclick.com> User-Agent: Mutt/1.4.1i X-Operating-System: FreeBSD 6.0-CURRENT Organization: The NUXI BSD Group X-Pgp-Rsa-Fingerprint: B7 4D 3E E9 11 39 5F A3 90 76 5D 69 58 D9 98 7A X-Pgp-Rsa-Keyid: 1024/34F9F9D5 cc: freebsd-amd64@FreeBSD.org Subject: Re: bsd i386 on amd64 X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: freebsd-amd64@FreeBSD.org List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 22 Jan 2005 00:13:22 -0000 On Fri, Jan 21, 2005 at 04:06:16PM -0800, Jeff Behl wrote: > i have a dual proc 3gHz AMD Opteron box Impossible. :-) The fastest Opteron right now is 2.5 GHz. > that i want to run java on, so > it looks like i have to use the i386 build (any news on the jdk coming > to AMD?). You probably want to use the Linux 'i386' JDK. > from what i've gathered, this should not be a problem and > performance should be at least par compared to to running on a Xeon. is > this true? i even seem to remember hearing rumor that the Opteron could > even run i386 code faster, mHz to mHz, than a Xeon? An Opteron runs all code faster MHz to MHz compared to Xeon. Opteron has a shorter pipeline and thus can do more work per cycle. Xeon has a very deep pipeline and thus can be clocked higher and must be clocked higher to get the same performance. -- -- David (obrien@FreeBSD.org)