From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750952AbVIUN6M (ORCPT ); Wed, 21 Sep 2005 09:58:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750958AbVIUN6M (ORCPT ); Wed, 21 Sep 2005 09:58:12 -0400 Received: from rrcs-67-78-243-58.se.biz.rr.com ([67.78.243.58]:28558 "EHLO mail.concannon.net") by vger.kernel.org with ESMTP id S1750952AbVIUN6M (ORCPT ); Wed, 21 Sep 2005 09:58:12 -0400 Message-ID: <4331671F.7000006@concannon.net> Date: Wed, 21 Sep 2005 09:58:55 -0400 From: Michael Concannon User-Agent: Mozilla Thunderbird 1.0.6-1.4.1.centos4 (X11/20050721) X-Accept-Language: en-us, en MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: Re: Bogomips on AMD X2 (was Re:) References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Robert.Boermans@uk.telex.com wrote: >On Wednesday 21 September 2005 16:20, Robert.Boermans@uk.telex.com wrote: > > >>Hello, >> >>I noticed that the bogomips results for the two cores on my machine are >>consistently not the same, the second one is always reported slightly >>faster, it's a small difference and I saw the same in a posted dmesg >> >> >from > > >>somebody else on the list. Which made me wonder: >> >> > >I guess it's a cache warming effect. Please show the numbers. >-- >vda > >Probably not, got this one from a web site, and on this one the first core >seems to be faster (can't check my own machine it's off and at home and >I'm at work.) The difference I get is similar, but always with the second >one faster. It's the same when using cat on /proc/cpuinfo. Oh and I saw it >on 2.6.11 and 2.6.12 as supplied with fedora core 4 myself. > >Calibrating delay using timer specific routine.. 4014.73 BogoMIPS >(lpj=8029470) >Mount-cache hash table entries: 512 >CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line) >CPU: L2 Cache: 512K (64 bytes/line) >CPU 0(2) -> Core 0 >Intel machine check architecture supported. >Intel machine check reporting enabled on CPU#0. >mtrr: v2.0 (20020519) >Enabling fast FPU save and restore... done. >Enabling unmasked SIMD FPU exception support... done. >Checking 'hlt' instruction... OK. >CPU0: AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ stepping 02 >Booting processor 1/1 eip 2000 >Initializing CPU#1 >Calibrating delay using timer specific routine.. 4005.37 BogoMIPS >(lpj=8010751) >CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line) >CPU: L2 Cache: 512K (64 bytes/line) >CPU 1(2) -> Core 1 >Intel machine check architecture supported. >Intel machine check reporting enabled on CPU#1. >CPU1: AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ stepping 02 >Total of 2 processors activated (8020.11 BogoMIPS). > >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/ > > > opposite result here - 2nd one is faster (from /proc/cpuinfo): processor : 0 vendor_id : AuthenticAMD model name : AMD Athlon(tm) 64 X2 Dual Core Processor 4400+ cpu MHz : 2211.337 bogomips : 4374.52 ... processor : 1 vendor_id : AuthenticAMD model name : AMD Athlon(tm) 64 X2 Dual Core Processor 4400+ cpu MHz : 2211.337 ... bogomips : 4407.29