Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754615AbXLJCBI (ORCPT ); Sun, 9 Dec 2007 21:01:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752103AbXLJCA4 (ORCPT ); Sun, 9 Dec 2007 21:00:56 -0500 Received: from mx03.nsgroup.net ([195.84.17.43]:59641 "EHLO mx03.nsgroup.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751380AbXLJCA4 (ORCPT ); Sun, 9 Dec 2007 21:00:56 -0500 X-Greylist: delayed 812 seconds by postgrey-1.27 at vger.kernel.org; Sun, 09 Dec 2007 21:00:55 EST Message-ID: <475C9B06.9000901@nerdmail.nu> Date: Mon, 10 Dec 2007 02:48:54 +0100 From: Alexander Rajula User-Agent: Thunderbird 2.0.0.6 (X11/20071022) MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: PROBLEM: /proc/cpuinfo reports erroneous CPU frequency. (2.6.23 & 2.6.22) Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-velocity-MailScanner-Information: Please contact the ISP for more information X-velocity-MailScanner: Found to be clean X-velocity-MailScanner-From: chris@nerdmail.nu Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2965 Lines: 89 While using 2.6.23 and 2.6.22 (earlier kernels have not been tested) /proc/cpuinfo reports the wrong CPU frequency: While overclocking an AMD Athlon X2 (2GHz) CPU /proc/cpuinfo reports the wrong CPU frequency. I am quite puzzled by this. Is this an error in the kernel, or is there something strange going on? Output from /proc/cpuinfo (processor at 3.0GHz in BIOS): processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : 75 model name : AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ stepping : 2 cpu MHz : 2300.043 cache size : 512 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow rep_good pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy bogomips : 4602.12 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ts fid vid ttp tm stc processor : 1 vendor_id : AuthenticAMD cpu family : 15 model : 75 model name : AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ stepping : 2 cpu MHz : 2300.043 cache size : 512 KB physical id : 0 siblings : 2 core id : 1 cpu cores : 2 fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow rep_good pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy bogomips : 4599.31 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ts fid vid ttp tm st Output from scripts/ver_linux: Linux dubbelmacka 2.6.23-gentoo-r3 #3 SMP PREEMPT Mon Dec 10 00:46:09 CET 2007 x 86_64 AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ AuthenticAMD GNU/Linux Gnu C 4.1.2 Gnu make 3.81 binutils Binutils util-linux 2.12r mount 2.12r module-init-tools 3.2.2 e2fsprogs 1.39 reiserfsprogs 3.6.19 reiser4progs 1.0.5 PPP 2.4.4 Linux C Library 2.5 Dynamic linker (ldd) 2.5 Procps 3.2.7 Net-tools 1.60 Kbd 1.13 Sh-utils 6.9 udev 115 Modules Loaded nvidia -- 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/