From owner-freebsd-questions@FreeBSD.ORG Fri May 20 03:38:07 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 C217B16A4CE for ; Fri, 20 May 2005 03:38:07 +0000 (GMT) Received: from web50908.mail.yahoo.com (web50908.mail.yahoo.com [206.190.38.128]) by mx1.FreeBSD.org (Postfix) with SMTP id 6F5D443D78 for ; Fri, 20 May 2005 03:38:06 +0000 (GMT) (envelope-from b_oshea@yahoo.com) Received: (qmail 1187 invoked by uid 60001); 20 May 2005 03:38:02 -0000 Comment: DomainKeys? See http://antispam.yahoo.com/domainkeys DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; b=k6+Yp2uM7jCdEnJAImcGPjpytGFydXi4Vx6dv5a70v6dlHslkLYje81f+fH15u8+EvJTW7yY8xSJ3WTK+We0hz3AzNVP01KWSouZOH2FczYYZd0kqN97O0NFOaCLXn5WzZcCdrN4k0IDZFvB3HbOvAdqAmpSd+jqvE2rRvV563g= ; Message-ID: <20050520033802.1181.qmail@web50908.mail.yahoo.com> Received: from [156.153.254.42] by web50908.mail.yahoo.com via HTTP; Thu, 19 May 2005 20:38:02 PDT Date: Thu, 19 May 2005 20:38:02 -0700 (PDT) From: Brian O'Shea To: freebsd-questions@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Subject: Non-identical CPUs in dual-processor system 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, 20 May 2005 03:38:07 -0000 Hello all, I have a dual-processor system that I have been using with only a single CPU for some time. Recently I got ahold of another CPU from an old retired system. I thought that both processors were identical (they came from what appears to be the same model PC, an HP Kayak XU). However, after booting the system I see that the processors are not the same: CPU information in mptable output: Processors: APIC ID Version State Family Model Step Flags 0 0x11 BSP, usable 6 3 3 0x80fbff 1 0x11 AP, usable 6 5 2 0x183fbff (sorry for the long lines) In this output you can see that the model for CPU0 is 3, but for CPU 1 it is 5. Also, the flags are different. Are there likely to be any adverse effects from using this combination of processors? There are no errors in dmesg, and the system appears to be using both processors: ... CPU: Pentium II/Pentium II Xeon/Celeron (266.08-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0x633 Stepping = 3 Features=0x80fbff ... MPTable: FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs cpu0 (BSP): APIC ID: 0 cpu1 (AP): APIC ID: 1 ... cpu0 on motherboard cpu1 on motherboard ... SMP: AP CPU #1 Launched! Thanks, -brian Yahoo! Mail Stay connected, organized, and protected. Take the tour: http://tour.mail.yahoo.com/mailtour.html