From owner-freebsd-current@FreeBSD.ORG Tue Feb 24 10:44:26 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 2978B16A4CE; Tue, 24 Feb 2004 10:44:26 -0800 (PST) Received: from freebee.digiware.nl (dsl390.iae.nl [212.61.63.138]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3CE4143D1D; Tue, 24 Feb 2004 10:44:25 -0800 (PST) (envelope-from wjw@withagen.nl) Received: from dual (dual [212.61.27.71]) by freebee.digiware.nl (8.12.10/8.12.9) with SMTP id i1OIgveL053871; Tue, 24 Feb 2004 19:42:57 +0100 (CET) (envelope-from wjw@withagen.nl) Message-ID: <079d01c3fb06$0e2299b0$471b3dd4@dual> From: "Willem Jan Withagen" To: Date: Tue, 24 Feb 2004 19:43:11 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 cc: freebsd-performance@FreeBSD.ORG Subject: The effects of WITNESS and INVARIANTS X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 24 Feb 2004 18:44:26 -0000 Hi, Just out of curriousity, and 'cause I've got some idle boxes, I started to do some (NFS-)performance testing. There is still a long way to go, but I've but a first obvious result online running on the local server disk. It makes the claims of the effects of WITNESS and INVARIANTS very obvious. Look especially at the graph for "Sequential block read". You might want to have a look at: http://withagen.dyndns.org/FreeBSD/nfs-performance/index.html. Note that no NFS data is included. I have some Bonnie-NFS data, but need to write accompanying test and conclusions for it. Suggestions are more than welcomed. --WjW