From owner-freebsd-questions@FreeBSD.ORG Wed Feb 1 04:15:32 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org 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 A366016A420 for ; Wed, 1 Feb 2006 04:15:32 +0000 (GMT) (envelope-from antop64@yahoo.com) Received: from web50404.mail.yahoo.com (web50404.mail.yahoo.com [206.190.38.69]) by mx1.FreeBSD.org (Postfix) with SMTP id 251D743D45 for ; Wed, 1 Feb 2006 04:15:31 +0000 (GMT) (envelope-from antop64@yahoo.com) Received: (qmail 49150 invoked by uid 60001); 1 Feb 2006 04:15:31 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:Received:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=JsvxqGCVLDgEJ3ZgYu/qN9FkOAQwLHo5YM0Ka1fCX7e7EEHu5w2XmFHDsWQydZA0+sLYY/h4R8GXKUAzfA0bsz2qmxnsq+Wyo/T7m//impYXOcBHWFyLzl7W9ICgWLFnFvD7/xGLLUvlbIR58m/ijCqsDUsyMfqJPXmOZKJ+KYk= ; Message-ID: <20060201041531.49148.qmail@web50404.mail.yahoo.com> Received: from [203.150.212.200] by web50404.mail.yahoo.com via HTTP; Tue, 31 Jan 2006 20:15:31 PST Date: Tue, 31 Jan 2006 20:15:31 -0800 (PST) From: Anto Prijosoesilo To: Robert Slade In-Reply-To: <1138730046.8083.10.camel@lmail.bathnetworks.co.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Cc: freebsd-questions@freebsd.org Subject: Re: Can't see second CPU on IBM eServer x346 (FBSD5.4 and 6.0 amd64) X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 01 Feb 2006 04:15:32 -0000 --- Robert Slade wrote: > On Tue, 2006-01-31 at 07:59, Anto Prijosoesilo > wrote: > > Hi, > > > > I'm having a problem installing FreeBSD/amd64 SMP > on a > > couple of IBM x346 servers. Both have dual XEON > 3.0GHz > > EM64T processors but OS seems to only enable one > of > > them. > > > > ACPI has to be disabled on both machines for them > to > > boot, otherwise they will hang after probing the > > keyboard. > > > > I'm using the SMP kernel config unedited. > > > > Mptable on both machines show that there are 2 > CPUs: > > > > -- > > Processors: APIC ID Version State > Family > > Model Step Flags > > 0 0x14 BSP, usable > 15 > > 4 1 0x0301 > > 6 0x14 AP, usable > 15 > > 4 1 0x0301 > > -- > > > > Sysctl hw.ncpu returns 1 on both systems. > > > > The one on FreeBSD 5.4 has 6GB or memory and the > one > > on FreeBSD 6.0 has 3GB of memory. I can run tests > on > > the 3GB system and will probably try FreeBSD/i386 > on > > it to see if it can see both CPUs. > > > > Has anyone successfully ran FreeBSD/amd64 SMP on > these > > machines? > > > > Thanks in advance for any info anyone can provide. > > > > Anto. > > Silly question. Isn't the XEON Intel i386 > architecture which runs > Freebsd i386 whereas the FreeBSD amd64 is for AMD 64 > bit devices.? Unless I'm mistaken, both the Intel XEON EM64T and AMD Athlon64/Opteron processors are capable of running in 32-bit (i386) or 64-bit (amd64/EM64T) modes. I need to run these machines in 64-bit mode to be able to access more than 4GB of memory. As I understand it, i386 architecture only allows access to up to 4GB of memory and to access more than this it'll need to be compiled with the PAE option. My impression from reading the lists in the past is that accessing large amount of memory by running in 64-bit is more efficient compared to running in 32-bit with PAE. Is this still the case? > In which case you should use the Freebsd i386 SMP > kernel. I intend to test the 3GB machine with this to see if there are any differences. > Rob Anto. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com