Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757600AbXLLM13 (ORCPT ); Wed, 12 Dec 2007 07:27:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753645AbXLLM1V (ORCPT ); Wed, 12 Dec 2007 07:27:21 -0500 Received: from smtp6.pp.htv.fi ([213.243.153.40]:59668 "EHLO smtp6.pp.htv.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751052AbXLLM1V (ORCPT ); Wed, 12 Dec 2007 07:27:21 -0500 X-Greylist: delayed 1817 seconds by postgrey-1.27 at vger.kernel.org; Wed, 12 Dec 2007 07:27:20 EST Date: Wed, 12 Dec 2007 13:57:01 +0200 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= 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 Message-ID: <20071212115701.GC16513@sci.fi> References: <475F1DC6.5090403@keyaccess.nl> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <475F1DC6.5090403@keyaccess.nl> User-Agent: Mutt/1.5.16 (2007-06-09) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1512 Lines: 65 On Wed, Dec 12, 2007 at 12:31:18AM +0100, 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. vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz stepping : 6 cpu MHz : 2394.000 cycles: out 1830, in 1166 cpu MHz : 1596.000 cycles: out 1925, in 1266 ## vendor_id : GenuineIntel cpu family : 6 model : 8 model name : Pentium III (Coppermine) stepping : 10 cpu MHz : 850.000 cycles: out 1142, in 475 cpu MHz : 700.000 cycles: out 914, in 406 ## vendor_id : AuthenticAMD cpu family : 6 model : 7 model name : AMD Duron(tm) processor stepping : 1 cpu MHz : 1300.108 cycles: out 2562, in 2562 ## vendor_id : GenuineIntel cpu family : 6 model : 5 model name : Pentium II (Deschutes) stepping : 2 cpu MHz : 449.242 cycles: out 607, in 272 -- Ville Syrj?l? syrjala@sci.fi http://www.sci.fi/~syrjala/ -- 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/