Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263991AbUD0LBc (ORCPT ); Tue, 27 Apr 2004 07:01:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264000AbUD0LBc (ORCPT ); Tue, 27 Apr 2004 07:01:32 -0400 Received: from mail.inf.tu-dresden.de ([141.76.2.1]:39307 "EHLO mail.inf.tu-dresden.de") by vger.kernel.org with ESMTP id S263991AbUD0LBO (ORCPT ); Tue, 27 Apr 2004 07:01:14 -0400 Message-ID: <408E3D74.2090301@inf.tu-dresden.de> Date: Tue, 27 Apr 2004 13:01:08 +0200 From: Christoph Pohl Organization: TU Dresden, Dept. CS User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040413 Debian/1.6-5 X-Accept-Language: de, en, ru MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: Low bogomips on IBM x445 (kernel 2.6.5) Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2125 Lines: 74 Hello, I'm currently configuring an IBM x445 box with 4 Xeon CPUs (3GHz) and hyperthreading enabled. Everything seems to work fine since kernel 2.6.5 but I keep wondering about the *very low* Bogomips numbers. Here is what I see in /proc/cpuinfo: processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Xeon(TM) CPU 3.00GHz stepping : 7 cpu MHz : 2996.175 cache size : 512 KB physical id : 0 siblings : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid bogomips : 193.53 (...) processor : 7 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Xeon(TM) CPU 3.00GHz stepping : 7 cpu MHz : 2996.175 cache size : 512 KB physical id : 25 siblings : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid bogomips : 199.16 199 bogomips seems to be pretty low for my taste, although the box seems to work fine (and fast). I came accross two bugs that looked very similar. However, they were filed agains 2.4.x and should have been fixed for 2.6.x: http://www.ussg.iu.edu/hypermail/linux/kernel/0311.0/0329.html http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=115061 Any ideas? Best regards, Christoph PS: Please CC me, I didn't subscribe to the list! - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/