Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757738AbXFZQAv (ORCPT ); Tue, 26 Jun 2007 12:00:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754150AbXFZQAn (ORCPT ); Tue, 26 Jun 2007 12:00:43 -0400 Received: from mtagate6.uk.ibm.com ([195.212.29.139]:21300 "EHLO mtagate6.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752920AbXFZQAm (ORCPT ); Tue, 26 Jun 2007 12:00:42 -0400 Date: Tue, 26 Jun 2007 12:00:32 -0400 From: Muli Ben-Yehuda To: "Keshavamurthy, Anil S" Cc: Arjan van de Ven , Andi Kleen , Andrew Morton , linux-kernel@vger.kernel.org, gregkh@suse.de, suresh.b.siddha@intel.com, ashok.raj@intel.com, davem@davemloft.net, clameter@sgi.com Subject: Re: [Intel IOMMU 00/10] Intel IOMMU support, take #2 Message-ID: <20070626160032.GF8274@rhun.ibm.com> References: <20070619213701.219910000@askeshav-devel.jf.intel.com> <20070625234550.058635cb.akpm@linux-foundation.org> <200706260912.45838.ak@suse.de> <20070626111324.GB4320@rhun.ibm.com> <46812ADF.3060609@linux.intel.com> <20070626151125.GD8274@rhun.ibm.com> <20070626154803.GA3374@linux-os.sc.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070626154803.GA3374@linux-os.sc.intel.com> User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 761 Lines: 22 On Tue, Jun 26, 2007 at 08:48:04AM -0700, Keshavamurthy, Anil S wrote: > Our initial benchmark results showed we had around 3% extra CPU > utilization overhead when compared to native(i.e without IOMMU). > Again, our benchmark was on small SMP machine and we used iperf and > a 1G ethernet cards. Please try netperf and a bigger machine for a meaningful comparison :-) I assume this is with e1000? > Going forward we will do more benchmark tests and will share the > results. Looking forward to it. Cheers, Muli - 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/