From owner-freebsd-questions Sun Nov 21 12:50:41 1999 Delivered-To: freebsd-questions@freebsd.org Received: from gate.bulinfo.net (psf44.mobikom.net [212.5.130.44]) by hub.freebsd.org (Postfix) with ESMTP id C357314E67 for ; Sun, 21 Nov 1999 12:50:06 -0800 (PST) (envelope-from ian@bulinfo.net) Received: from bulinfo.net (ian@localhost [127.0.0.1]) by gate.bulinfo.net (8.9.3/8.9.3) with ESMTP id WAA83468 for ; Sun, 21 Nov 1999 22:50:00 +0200 (EET) (envelope-from ian@bulinfo.net) Message-ID: <38385AF8.731806A9@bulinfo.net> Date: Sun, 21 Nov 1999 22:50:00 +0200 From: Iani Brankov Organization: ok systems X-Mailer: Mozilla 4.7 [en] (X11; I; Linux 2.0.36 i386) X-Accept-Language: en MIME-Version: 1.0 To: Freebsd-questions Subject: Do I have NO FUTURE with vinum? Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Hi everybody, I have a big headaches with this 'evil'. I configured a two disk striped volume, but it performs much slower than I expected. The read performance - ~20MB/s is ok, but in writing it's ~4MB/s. Both the separate disks are much faster than the stripped volume, configured onto them. My machine is PII/350MHz with an Intel BX board, 64MB RAM, Intel EtherExpress Pro/100B, Adaptec U2W SCSI controller with IBM DDRS 9.1GB & IBM DNES 9.1GB LVD disks working in LVD mode and a Quantum Fireball SE 4.3BG single ended narrow scsi disk used for 3.3 FreeBSD cvsupped a day ago. I think the SCSI chain is ok (termination, length, etc) I also tried the performance configuring a 'one disk concatenated' volume on the first hard drive, but the result was terrible again (below 50% of the standalone disk performance). I noticed when I write onto the raw vinum device it performs pretty well, whereas the cooked one is good in reading, but very slow in writing. I made so many tests in different ways, so I cannot believe it's related to a configuration mistake. Anyway here's the vinum.cfg: drive d1 device /dev/da1h drive d2 device /dev/da2h volume double plex org striped 256k sd length 8700mb drive d1 sd length 8700mb drive d2 The hardware configuration is very popular, so I hope someone has already solved this problem, if it's related to the hardware. Thanks in advance, iani To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message