Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759354AbXLLKel (ORCPT ); Wed, 12 Dec 2007 05:34:41 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754237AbXLLKee (ORCPT ); Wed, 12 Dec 2007 05:34:34 -0500 Received: from host86-138-52-41.range86-138.btcentralplus.com ([86.138.52.41]:40174 "EHLO oak.selfip.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755312AbXLLKed (ORCPT ); Wed, 12 Dec 2007 05:34:33 -0500 Message-ID: <475FB92B.3060603@oak.selfip.net> Date: Wed, 12 Dec 2007 10:34:19 +0000 From: Dave Haywood User-Agent: Thunderbird 2.0.0.9 (Windows/20071031) MIME-Version: 1.0 To: Rene Herman CC: Linux Kernel , dpreed@reed.com, Alan Cox , pavel@ucw.cz, andi@firstfloor.org, rol@as2917.net, Krzysztof Halasa , david@davidnewall.com, hpa@zytor.com, john@stoffel.org, linux-os@analogic.com Subject: Re: [RFT] Port 0x80 I/O speed References: <475F1DC6.5090403@keyaccess.nl> In-Reply-To: <475F1DC6.5090403@keyaccess.nl> X-Enigmail-Version: 0.95.5 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1642 Lines: 81 Rene Herman wrote: > Good day. > > Would some people on x86 (both 32 and 64) be kind enough to compile > and run the attached program? This is about testing how long I/O port > access to port 0x80 takes. It measures in CPU cycles so CPU speed is > crucial in reporting. $ cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 8 model name : Pentium III (Coppermine) stepping : 6 cpu MHz : 930.347 cache size : 256 KB 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 mmx fxsr sse bogomips : 1861.99 clflush size : 32 cycles: out 1183, in 706 cycles: out 1183, in 707 cycles: out 1182, in 706 cycles: out 1182, in 706 cycles: out 1183, in 706 cycles: out 1182, in 706 cycles: out 1182, in 706 cycles: out 1183, in 706 cycles: out 1183, in 707 cycles: out 1183, in 707 cycles: out 1183, in 706 cycles: out 1183, in 706 cycles: out 1183, in 706 cycles: out 1182, in 706 cycles: out 1183, in 707 cycles: out 1183, in 707 cycles: out 1183, in 706 cycles: out 1183, in 706 cycles: out 1182, in 706 cycles: out 1183, in 706 cycles: out 1183, in 706 cycles: out 1183, in 706 Dave. -- 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/