From owner-freebsd-stable@FreeBSD.ORG Thu Apr 7 08:40:58 2005 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 884AA16A4CE for ; Thu, 7 Apr 2005 08:40:58 +0000 (GMT) Received: from hyperreal.org (taz3.hyperreal.org [209.237.226.90]) by mx1.FreeBSD.org (Postfix) with SMTP id E102643D58 for ; Thu, 7 Apr 2005 08:40:57 +0000 (GMT) (envelope-from brian@hyperreal.org) Received: (qmail 5386 invoked from network); 7 Apr 2005 08:41:02 -0000 Received: from localhost.hyperreal.org (HELO paz.hyperreal.org) (127.0.0.1) by localhost.hyperreal.org with SMTP; 7 Apr 2005 08:41:02 -0000 Received: (qmail 37203 invoked by uid 1001); 7 Apr 2005 08:42:14 -0000 Received: from localhost (sendmail-bs@127.0.0.1) by localhost with SMTP; 7 Apr 2005 08:42:14 -0000 Date: Thu, 7 Apr 2005 01:42:14 -0700 (PDT) From: Brian Behlendorf To: Carl Makin In-Reply-To: <42548B2D.9010503@xena.ipaustralia.gov.au> Message-ID: <20050407013544.W73813@paz.hyperreal.org> References: <200504061842.43294.eugene@imedia.ru> <42548B2D.9010503@xena.ipaustralia.gov.au> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Spam-Rating: localhost.hyperreal.org 1.6.2 0/1000/N cc: freebsd-stable@freebsd.org cc: freebsd-questions@freebsd.org Subject: Re: IBM eServer 346 ServeRaid is too slow X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Apr 2005 08:40:58 -0000 On Thu, 7 Apr 2005, Carl Makin wrote: > I'd say you are seeing the same as I am with the same card in a Dell 1855. > There is something wrong with the mpt driver and the disks when they are > setup in a raid0 set. If you split the disks and use them as individual > drives then you will get full performance. It's also a known problem, though not being tracked very well. http://lists.freebsd.org/pipermail/freebsd-scsi/2004-December/001577.html http://lists.freebsd.org/pipermail/freebsd-scsi/2004-December/001578.html Doesn't look like (from viewcvs.cgi) there's been any recent work on this. Brian