From owner-freebsd-hackers@FreeBSD.ORG Wed Oct 18 15:40:13 2006 Return-Path: X-Original-To: freebsd-hackers@freebsd.org Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 808F016A407 for ; Wed, 18 Oct 2006 15:40:13 +0000 (UTC) (envelope-from lydianconcepts@gmail.com) Received: from nf-out-0910.google.com (nf-out-0910.google.com [64.233.182.191]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8E5C143E9A for ; Wed, 18 Oct 2006 15:36:29 +0000 (GMT) (envelope-from lydianconcepts@gmail.com) Received: by nf-out-0910.google.com with SMTP id p77so707610nfc for ; Wed, 18 Oct 2006 08:36:09 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=HvvWfzGl6d6rGYTJEJJ+lehXQIsPyQ9+hw9XKhF12sJqWFuzDh37FCJkWw21QhJwBD23NInGn6hw8pIRpfijFBRKBZIQw+E9A8LStHFLl5/CCx7JzVWK4OhwGWBvTOqAu97/KKM9psmbN/g5oNSCpCtsT5Z2OdBun3ZbVMEVyXI= Received: by 10.82.106.14 with SMTP id e14mr2258837buc; Wed, 18 Oct 2006 08:35:53 -0700 (PDT) Received: by 10.78.197.4 with HTTP; Wed, 18 Oct 2006 08:35:53 -0700 (PDT) Message-ID: <7579f7fb0610180835wf89cbc8lef04d1a4f1a73cb1@mail.gmail.com> Date: Wed, 18 Oct 2006 08:35:53 -0700 From: "Matthew Jacob" To: "Johannes.Kruger@nokia.com" In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <7579f7fb0610121617n2b6b4cdap67eeb0c9b5a58da8@mail.gmail.com> X-Mailman-Approved-At: Wed, 18 Oct 2006 16:50:13 +0000 Cc: freebsd-scsi@freebsd.org, freebsd-hackers@freebsd.org Subject: Re: LSI1064 and LSI1064E and mpt X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Oct 2006 15:40:13 -0000 On 10/17/06, Johannes.Kruger@nokia.com wrote: > Hi Matthew. > I gave up on the PCI-express version of the card for the time being. My contact at LSI hasn't gotten back to me. > The PCI-X running the same firmware works fine, except for the slow RAID > of course. > > I still have the main problem I try to get to the bottom off, and that > is that the RAID-1 volume da0 is very slow. > - Slow with even just 1 disk. > - Slow when sync completed or not. > Without RAID configured , and having 2 disks mounted, the disks are fast > ~ 30 Mbytes/sec > The disks are Fujitsu SATA laptop drives. Integrated Mirroring has always been a problem. For parallel SCSI, you have to negotiate with the physical drives themselves. This *shouldn't* be an issue with SAS, but you never know. > > I was poking around the MPI libraries of Linux, and I see they have some > extra entries related to SAS. > Also the file mptsas.c in Linux sets up the link speed and so on on the > PHY. > Do not know if something there is needed yet. > > Any idea of where I can start looking for the problem ? > - link speed > - dma > - caching > - etc ..etc .. > Don't know yet. The RAID stuff for mpt was written solely for SPI. It's a miracle it works at all for SAS or FC. I have a sunfire4100 on loan which supports this and when I have a spare moment (hah) I'll look into it.