Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751064AbWBXUcg (ORCPT ); Fri, 24 Feb 2006 15:32:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751076AbWBXUcg (ORCPT ); Fri, 24 Feb 2006 15:32:36 -0500 Received: from smtp.osdl.org ([65.172.181.4]:47050 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S1751017AbWBXUcf (ORCPT ); Fri, 24 Feb 2006 15:32:35 -0500 Date: Fri, 24 Feb 2006 12:31:29 -0800 From: Andrew Morton To: Gautam H Thaker Cc: mingo@elte.hu, gautam.h.thaker@lmco.com, linux-kernel@vger.kernel.org Subject: Re: ~5x greater CPU load for a networked application when using 2.6.15-rt15-smp vs. 2.6.12-1.1390_FC4 Message-Id: <20060224123129.4ec024d4.akpm@osdl.org> In-Reply-To: <43FF675A.6080305@atl.lmco.com> References: <43FE134C.6070600@atl.lmco.com> <20060223205851.GA24321@elte.hu> <20060224041145.5bcdbc97.akpm@osdl.org> <43FF675A.6080305@atl.lmco.com> X-Mailer: Sylpheed version 1.0.4 (GTK+ 1.2.10; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 805 Lines: 18 Gautam H Thaker wrote: > > > http://www.zip.com.au/~akpm/linux/#zc <- better ;) > > Andrew, > > I read the README for the "zc" tests. I wish Ingo can opine on which may be a > better test. Also, i assume that I can run "zcs" and "zcc" on the same > machine. I would do the tests with "send" instead of "sendfile". Oh. I don't actually remember what zc does. I was actually referring to `cyclesoak', which has proven to be a pretty accurate (or at least, sensitive and repeatable) way of determining overall per-CPU system load. - 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/