From owner-freebsd-questions Sun Jan 30 0:12:41 2000 Delivered-To: freebsd-questions@freebsd.org Received: from eeyore.amscons.com (eeyore.amscons.com [205.158.54.241]) by hub.freebsd.org (Postfix) with ESMTP id 52504158A6 for ; Sun, 30 Jan 2000 00:12:39 -0800 (PST) (envelope-from bob@eeyore.amscons.com) Received: from localhost (bob@localhost) by eeyore.amscons.com (8.9.3/8.9.3) with ESMTP id AAA30126 for ; Sun, 30 Jan 2000 00:11:28 -0800 (PST) Date: Sun, 30 Jan 2000 00:11:28 -0800 (PST) From: Bob Amstadt To: freebsd-questions@freebsd.org Message-ID: Sign: bob MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG I recently converted my system from Linux to FreeBSD. I backed up all my Linux filesystems to DAT using tar. The backups took about 3 hours. After changing to FreeBSD, I read the tape archives back to disk. However, it took nearly 2 days to read the tape. The dd command seems to indicate to me that I am transfering data at around 15k/sec. This seems horribly slow. My configuration is: Tekram DC-390U SCSI controller (ncr0 controller in kernel) Aiwa GD-8000 DDS-2 DAT drive (kernel indicates 10 MB/s transfers) Any suggestions for improved performance? To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message