From owner-freebsd-bugs@FreeBSD.ORG Tue Jan 18 00:43:47 2005 Return-Path: Delivered-To: freebsd-bugs@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5098416A4CE for ; Tue, 18 Jan 2005 00:43:47 +0000 (GMT) Received: from xena.netkey.at (ns.netkey.at [83.64.50.179]) by mx1.FreeBSD.org (Postfix) with ESMTP id C725443D41 for ; Tue, 18 Jan 2005 00:43:46 +0000 (GMT) (envelope-from oliver@netkey.at) Received: from localhost (localhost [127.0.0.1]) by xena.netkey.at (Postfix) with ESMTP id 9E7269A for ; Tue, 18 Jan 2005 01:43:45 +0100 (CET) Received: from xena.netkey.at ([127.0.0.1]) by localhost (xena.netkey.at [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 59630-03-2 for ; Tue, 18 Jan 2005 01:43:41 +0100 (CET) Received: from kismet (83-64-50-177.hietzing.xdsl-line.inode.at [83.64.50.177]) by xena.netkey.at (Postfix) with ESMTP id 5E7628E for ; Tue, 18 Jan 2005 01:43:41 +0100 (CET) From: "oliver walland" To: Date: Tue, 18 Jan 2005 01:43:36 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook, Build 11.0.6353 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 Thread-Index: AcT89r44rz6paqUbRGOy4EOj9BN5qg== Message-Id: <20050118004341.5E7628E@xena.netkey.at> X-Virus-Scanned: by amavisd-new at xena.netkey.at Subject: hard disc - benchmark problem freebsd5.3 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 18 Jan 2005 00:43:47 -0000 I will try to explain the problem in a short way: 2 situations (same Hardware): bonnie -d /usr -s 1024, during bonnie just iostat for looking the throughput First Situation: On the first Channel of PATA jumpered as master the hard disc und second channel as master a cd-rom Throughput about 15mb/s (iostat) Second Situation: Just plugged the cd-rom off. Throughput about 35mb/s (iostat) This is very strange; I tried this on several PC's. It is always the same. I do not believe that I am the only person who has this problem. I also got a strange problem with testing SATA RAID5 controller (PCI64). Throughput is about 130mb/s, if I make bonnie at the same time on the onboard lsi controller, it goes down to 50mb/s. These are different controllers and channels, so what is wrong. I think something really bad is going on.