Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 31 Jan 2002 17:56:27 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 31 Jan 2002 17:56:18 -0500 Received: from rakis.net ([207.8.143.12]:42122 "EHLO egg.rakis.net") by vger.kernel.org with ESMTP id ; Thu, 31 Jan 2002 17:56:03 -0500 Date: Thu, 31 Jan 2002 17:55:57 -0500 (EST) From: Greg Boyce X-X-Sender: gboyce@egg To: linux-kernel@vger.kernel.org Subject: Machines misreporting Bogomips Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org kernel folk, I've got a strange issue that I've been struggling to find the solution to for some time now. I work in a group that assists in the managing of large numbers of deployed linux boxes running variants of the 2.2 kernel on them. The machines themselves are all pretty standard. There are slight variances on vendors, cpu speeds, etc., but they're all running from the same motherboards. Every once in a while we come across single machines which are running a lot slower than they should be, and are misreporting their speed in bogomips under /proc/cpuinfo. Reinstalling the OS and changing versions of the kernel don't appear to affect the machines themselves at all. I was wondering if anyone would be able to provide me with a starting point to hunt this down. The only solution we had found in the past was to replace the machines, but some of them are located out of the country and that would be expensive. Here is the output from /proc/cpuinfo for machines. The first machine is normal, the second is affected by this bug. They're both running the same hardware, although the first machine's CPU is 650mhz instead of 500mhz. Machine 1: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 8 model name : Pentium III (Coppermine) stepping : 3 cpu MHz : 645.676332 cache size : 0 KB fdiv_bug : no hlt_bug : no sep_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 3 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 psn mmx osfxsr kni bogomips : 643.89 Machine 2: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 7 model name : Pentium III (Katmai) stepping : 3 cpu MHz : 496.677416 cache size : 512 KB fdiv_bug : no hlt_bug : no sep_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 mmx osfxsr kni bogomips : 4.06 Let me know if there's anything else I can provide to help with the diagnosis. The machine itself is an IBM Netfinity 4000R. -- Gregory Boyce - 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/