From owner-freebsd-scsi@FreeBSD.ORG  Sun Feb 20 03:10:23 2011
Return-Path: <owner-freebsd-scsi@FreeBSD.ORG>
Delivered-To: freebsd-scsi@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id AD25C106564A;
	Sun, 20 Feb 2011 03:10:23 +0000 (UTC)
	(envelope-from joachim@tingvold.com)
Received: from smtp.domeneshop.no (smtp.domeneshop.no [194.63.248.54])
	by mx1.freebsd.org (Postfix) with ESMTP id 615208FC0C;
	Sun, 20 Feb 2011 03:10:23 +0000 (UTC)
Received: from aannecy-552-1-267-197.w92-157.abo.wanadoo.fr ([92.157.235.197]
	helo=new-host.home)
	by smtp.domeneshop.no with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:16)
	(Exim 4.72) (envelope-from <joachim@tingvold.com>)
	id 1Pqzgj-0005y8-NH; Sun, 20 Feb 2011 04:10:21 +0100
Mime-Version: 1.0 (Apple Message framework v1076)
Content-Type: text/plain; charset=us-ascii; format=flowed; delsp=yes
From: Joachim Tingvold <joachim@tingvold.com>
In-Reply-To: <20110218171619.GB78796@nargothrond.kdm.org>
Date: Sun, 20 Feb 2011 04:10:19 +0100
Content-Transfer-Encoding: 7bit
Message-Id: <318745DD-B5F4-4693-B3F2-22DF8D437349@tingvold.com>
References: <07392102-4584-4690-9188-5202728CC7CA@tingvold.com>
	<20110120155746.GA22515@nargothrond.kdm.org>
	<BC40CE83-6116-49CD-8D37-5BC29893449D@tingvold.com>
	<070C12D5-A54F-4A48-A151-EBA16EF32A13@tingvold.com>
	<20110203221056.GA25389@nargothrond.kdm.org>
	<FFF5EF18-055C-4E0C-8F9B-03564217F80F@tingvold.com>
	<20110204180011.GA38067@nargothrond.kdm.org>
	<DE11FC96-06DB-479F-8673-B9ACE2805390@tingvold.com>
	<20110208201310.GA97635@nargothrond.kdm.org>
	<4A14FA28-6C9E-4F22-B7A3-4295ACD77719@tingvold.com>
	<20110218171619.GB78796@nargothrond.kdm.org>
To: Kenneth D. Merry <ken@freebsd.org>
X-Mailer: Apple Mail (2.1076)
Cc: freebsd-scsi@freebsd.org, Alexander Motin <mav@freebsd.org>
Subject: Re: mps0-troubles
X-BeenThere: freebsd-scsi@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: SCSI subsystem <freebsd-scsi.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-scsi>,
	<mailto:freebsd-scsi-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-scsi>
List-Post: <mailto:freebsd-scsi@freebsd.org>
List-Help: <mailto:freebsd-scsi-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-scsi>,
	<mailto:freebsd-scsi-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 20 Feb 2011 03:10:23 -0000

On Fri, Feb 18, 2011, at 18:16:19PM GMT+01:00, Kenneth D. Merry wrote:
> I just committed a fix to -current for the out of chain buffers  
> issue.  If
> you've got time, pull that fix in and see whether it works for you.

	[jocke@filserver /storage/tmp]$ i=0;while [ $i -le 10 ]; do dd if=/ 
dev/zero of=foo bs=1M count=204800; let "i += 1"; done

I let it run for a while, and checked back later.

<http://home.komsys.org/~jocke/dmesg_mps0_freebsd-scsi_6.txt>

	hw.mps.0.debug_level: 0
	hw.mps.0.allow_multiple_tm_cmds: 0
	hw.mps.0.io_cmds_active: 0
	hw.mps.0.io_cmds_highwater: 970
	hw.mps.0.chain_free: 1024
	hw.mps.0.chain_free_lowwater: 0
	hw.mps.0.chain_alloc_fail: 786

As you can see, I didn't do anything about the 'MPS_CHAIN_FRAMES'- 
value after I pulled the latest version. I could change it, but I  
guess this only would get rid of the 'out of chain'-messages, and not  
really solve the underlying problem.

-- 
Joachim