Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751237AbVJFGQS (ORCPT ); Thu, 6 Oct 2005 02:16:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751238AbVJFGQS (ORCPT ); Thu, 6 Oct 2005 02:16:18 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:31443 "EHLO pentafluge.infradead.org") by vger.kernel.org with ESMTP id S1751237AbVJFGQR (ORCPT ); Thu, 6 Oct 2005 02:16:17 -0400 Subject: Re: kernel performance update - 2.6.14-rc3 From: Arjan van de Ven To: "Chen, Kenneth W" Cc: linux-kernel@vger.kernel.org In-Reply-To: <200510052115.j95LFgg07836@unix-os.sc.intel.com> References: <200510052115.j95LFgg07836@unix-os.sc.intel.com> Content-Type: text/plain Date: Thu, 06 Oct 2005 08:16:11 +0200 Message-Id: <1128579372.2960.6.camel@laptopd505.fenrus.org> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 (2.2.3-2.fc4) Content-Transfer-Encoding: 7bit X-Spam-Score: 2.9 (++) X-Spam-Report: SpamAssassin version 3.0.4 on pentafluge.infradead.org summary: Content analysis details: (2.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.1 RCVD_IN_SORBS_DUL RBL: SORBS: sent directly from dynamic IP address [80.57.133.107 listed in dnsbl.sorbs.net] 2.8 RCVD_IN_DSBL RBL: Received via a relay in list.dsbl.org [] X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 872 Lines: 17 > dbench is catching some attention. We just ran it with default > parameter. I don't think default parameter is the right one to use > on some of our configurations. For example, it shows +100% improvement never ever consider dbench a serious benchmark; the thing is you can make dbench a lot better very easy; just make the kernel run one thread at a time until completion. dbench really gives very variable results, but it is not really possible to say if +100% or -100% is an improvement or a degredation for real life. So please just don't run it, or at least don't interpret the results in a "higher is better" way. - 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/