From owner-freebsd-questions@FreeBSD.ORG Tue Aug 19 00:56:16 2003 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3026716A4C0 for ; Tue, 19 Aug 2003 00:56:16 -0700 (PDT) Received: from doriath.saers.com (doriath.religion.no [193.156.192.198]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8E87743F93 for ; Tue, 19 Aug 2003 00:56:15 -0700 (PDT) (envelope-from niklasmls@doriath.saers.com) Received: by doriath.saers.com (Postfix, from userid 1001) id E02133EAF; Tue, 19 Aug 2003 09:56:13 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by doriath.saers.com (Postfix) with ESMTP id D8D853E42 for ; Tue, 19 Aug 2003 09:56:13 +0200 (CEST) Date: Tue, 19 Aug 2003 09:56:13 +0200 (CEST) From: Niklas Saers Mailinglistaccount To: freebsd-questions@freebsd.org Message-ID: <20030819095355.C34268@doriath.saers.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Subject: Vinum performance X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Aug 2003 07:56:16 -0000 Hi all, I was wondering if anyone can tell me about their experience of Vinum and its performance on RAID5 systems? I've built a vinum-raid of 4 160Gb disks that each do a dd if=/dev/zero of=/dev/adNd of about 60Mb/sec. However, when I've set up my raid, performance drops to 6Mb/sec, and with only three disks it drops to 4.5Mb/sec. Is this usual? Because with this speed I cannot run the system at all. Any good way of tuning the system? Cheers Nik