Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753933AbZAZS0j (ORCPT ); Mon, 26 Jan 2009 13:26:39 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751845AbZAZS00 (ORCPT ); Mon, 26 Jan 2009 13:26:26 -0500 Received: from g5t0009.atlanta.hp.com ([15.192.0.46]:43513 "EHLO g5t0009.atlanta.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751548AbZAZS0Z (ORCPT ); Mon, 26 Jan 2009 13:26:25 -0500 Message-ID: <497E0047.5080307@hp.com> Date: Mon, 26 Jan 2009 10:26:15 -0800 From: Rick Jones User-Agent: Mozilla/5.0 (X11; U; HP-UX 9000/785; en-US; rv:1.7.13) Gecko/20060601 X-Accept-Language: en-us, en MIME-Version: 1.0 To: "Zhang, Yanmin" CC: Nick Piggin , Pekka Enberg , Christoph Lameter , Andi Kleen , Matthew Wilcox , Andrew Morton , netdev@vger.kernel.org, sfr@canb.auug.org.au, matthew.r.wilcox@intel.com, chinang.ma@intel.com, linux-kernel@vger.kernel.org, sharad.c.tripathi@intel.com, arjan@linux.intel.com, suresh.b.siddha@intel.com, harita.chilukuri@intel.com, douglas.w.styner@intel.com, peter.xihong.wang@intel.com, hubert.nueckel@intel.com, chris.mason@oracle.com, srostedt@redhat.com, linux-scsi@vger.kernel.org, andrew.vasquez@qlogic.com, anirban.chakraborty@qlogic.com Subject: Re: care and feeding of netperf (Re: Mainline kernel OLTP performance update) References: <1232617672.14549.25.camel@penberg-laptop> <1232679773.11429.155.camel@ymzhang> <200901231933.10101.nickpiggin@yahoo.com.au> <1232701348.11429.170.camel@ymzhang> <497A0F27.3030801@hp.com> <1232766180.11429.202.camel@ymzhang> In-Reply-To: <1232766180.11429.202.camel@ymzhang> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 945 Lines: 23 >>To get quick profiles, that form of aggregate netperf is OK - just the one >>iteration with background processes using a moderatly long run time. However, >>for result reporting, it is best to (ab)use the confidence intervals >>functionality to try to avoid skew errors. > > Yes. My formal testing uses -i 50. I just wanted a quick testing. If I need > finer-tuning or investigation, I would turn on more options. Netperf will silently clip that to 30 as that is all the built-in tables know. > Thanks again. I learned a lot. Feel free to wander over to netperf-talk over at netperf.org if you want to talk some more about the care and feeding of netperf. happy benchmarking, rick jones -- 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/