From owner-freebsd-hardware@FreeBSD.ORG Mon Feb 1 14:49:52 2010 Return-Path: Delivered-To: freebsd-hardware@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 451351065695 for ; Mon, 1 Feb 2010 14:49:52 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from cyrus.watson.org (cyrus.watson.org [65.122.17.42]) by mx1.freebsd.org (Postfix) with ESMTP id 105898FC13 for ; Mon, 1 Feb 2010 14:49:52 +0000 (UTC) Received: from bigwig.baldwin.cx (66.111.2.69.static.nyinternet.net [66.111.2.69]) by cyrus.watson.org (Postfix) with ESMTPSA id BEA6046B23; Mon, 1 Feb 2010 09:49:51 -0500 (EST) Received: from jhbbsd.localnet (smtp.hudson-trading.com [209.249.190.9]) by bigwig.baldwin.cx (Postfix) with ESMTPA id BB8BB8A025; Mon, 1 Feb 2010 09:49:50 -0500 (EST) From: John Baldwin To: freebsd-hardware@freebsd.org Date: Mon, 1 Feb 2010 09:32:20 -0500 User-Agent: KMail/1.12.1 (FreeBSD/7.2-CBSD-20100120; KDE/4.3.1; amd64; ; ) References: <65BCAB515656D34AA48B0E713966CC83046A64@MBX021-E2-NJ-5.exch021.domain.local> In-Reply-To: <65BCAB515656D34AA48B0E713966CC83046A64@MBX021-E2-NJ-5.exch021.domain.local> MIME-Version: 1.0 Message-Id: <201002010932.20443.jhb@freebsd.org> Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.0.1 (bigwig.baldwin.cx); Mon, 01 Feb 2010 09:49:50 -0500 (EST) X-Virus-Scanned: clamav-milter 0.95.1 at bigwig.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-1.3 required=4.2 tests=AWL,BAYES_00 autolearn=ham version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on bigwig.baldwin.cx Cc: "Hoang V.D. | Creative Solutions GmbH" Subject: Re: FreeBSD 8.0, Intel Xeon E5530, Dell R410, only 2 cores available X-BeenThere: freebsd-hardware@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: General discussion of FreeBSD hardware List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 01 Feb 2010 14:49:52 -0000 On Friday 29 January 2010 6:28:17 pm Hoang V.D. | Creative Solutions GmbH wrote: > Hello, > > We just purchased a Dell PowerEdge R410 server with this CPU: Intel Xeon Processor E5530 > > http://ark.intel.com/Product.aspx?id=37103 > > According to specs the CPU has 4 cores, 8 Hyper-Threading threads, however after installing > FreeBSD 8.0 (amd64), only 2 cores (4 SMT threads) were recognized by the kernel. Here is the > relevant dmesg extract: > > ----------------- > Copyright (c) 1992-2009 The FreeBSD Project. > Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 > The Regents of the University of California. All rights reserved. > FreeBSD is a registered trademark of The FreeBSD Foundation. > FreeBSD 8.0-RELEASE-p2 #0: Tue Jan 5 21:11:58 UTC 2010 > root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC > Timecounter "i8254" frequency 1193182 Hz quality 0 > CPU: Intel(R) Xeon(R) CPU E5530 @ 2.40GHz (2394.01-MHz K8-class CPU) > Origin = "GenuineIntel" Id = 0x106a5 Stepping = 5 > Features=0xbfebfbff > Features2=0x9ce3bd > AMD Features=0x28100800 > AMD Features2=0x1 > TSC: P-state invariant > real memory = 8589934592 (8192 MB) > avail memory = 8247111680 (7865 MB) > ACPI APIC Table: > FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs > FreeBSD/SMP: 1 package(s) x 2 core(s) x 2 SMT threads > cpu0 (BSP): APIC ID: 16 > cpu1 (AP): APIC ID: 17 > cpu2 (AP): APIC ID: 18 > cpu3 (AP): APIC ID: 19 > ioapic1: Changing APIC ID to 1 > ioapic0 irqs 0-23 on motherboard > ioapic1 irqs 32-55 on motherboard > ... > ----------------- > > We was expecting to see "1 package(s) x 4 core(s) x 2 SMT threads" and 8 usable "cpus" > Instead. According to sysctl: > > kern.smp.cpus: 4 > kern.smp.maxcpus: 32 > hw.ncpu: 4 > machdep.hlt_cpus: 0 > > We have made no change to the BIOS settings (all settings are set by default by Dell). > Could anyone help us with an explanation for this issue? Can you get the output of 'acpidump -t'? Also, the 'x 2 cores x 2 SMT threads' bit is based on registers read from the CPU. It is really claiming to be a 2x2 chip (2 cores with 2 threads each). Maybe see what /usr/ports/misc/cpuid claims? -- John Baldwin