From owner-freebsd-scsi@FreeBSD.ORG Tue Aug 15 19:56:00 2006 Return-Path: X-Original-To: freebsd-scsi@freebsd.org Delivered-To: freebsd-scsi@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 97C1816A4DD for ; Tue, 15 Aug 2006 19:56:00 +0000 (UTC) (envelope-from anderson@centtech.com) Received: from mh1.centtech.com (moat3.centtech.com [207.200.51.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id 67F3B43D68 for ; Tue, 15 Aug 2006 19:55:57 +0000 (GMT) (envelope-from anderson@centtech.com) Received: from [10.177.171.220] (neutrino.centtech.com [10.177.171.220]) by mh1.centtech.com (8.13.1/8.13.1) with ESMTP id k7FJtpms080147; Tue, 15 Aug 2006 14:55:51 -0500 (CDT) (envelope-from anderson@centtech.com) Message-ID: <44E226DE.30701@centtech.com> Date: Tue, 15 Aug 2006 14:56:14 -0500 From: Eric Anderson User-Agent: Thunderbird 1.5.0.5 (X11/20060802) MIME-Version: 1.0 To: freebsd-scsi@freebsd.org References: <44DB8A9C.8090609@centtech.com> <44DC6F9F.4060405@centtech.com> <20060811154348.GA83765@chuggalug.clues.com> <44DCA9F1.1000302@centtech.com> <7579f7fb0608121101g112e006cy1112d282fab753d3@mail.gmail.com> <20060814080857.GA58022@chuggalug.clues.com> <20060814085936.GB58022@chuggalug.clues.com> <44E05FE8.3060800@centtech.com> In-Reply-To: <44E05FE8.3060800@centtech.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: ClamAV 0.87.1/1664/Tue Aug 15 09:28:31 2006 on mh1.centtech.com X-Virus-Status: Clean Cc: Subject: Re: isp issues on recent -STABLE X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Aug 2006 19:56:00 -0000 On 08/14/06 06:35, Eric Anderson wrote: > On 08/14/06 03:59, Geoff Buckingham wrote: >>>>> I have this one host connected to a single QLogic fiber channel switch, >>>>> which has 5 ACNC fiber channel arrays attached to it, along with a tape >>>>> robot and tape drives. Three of the arrays present 3 LUNs each (2TB per >>>>> LUN), and two of them present 2 LUNs each, 4GB and 10TB - I'm not using >>>>> these two arrays much yet, and are not really associated with the problems. >>>>> >> Curiosity just lead me to the acnc website. The html data-sheets suggest >> the arrays support 253 commands, the PDFs 255! It also reads to me as if >> this is per FC port not per LUN. You will presumably have better >> informaton with whatever documentation these devices shipped with. > > > *sigh* - I was going by what I was told on the phone by one of their > support people. I trust the lowest number :) > > I see that now too. I'll try setting that lower (80 should be good for > each of the three LUNs per array). > > Thanks everyone for the hints/help - I'll report back once I know if > that made any difference. > > Eric > > After setting the tag queue depth down, things seem much more stable. Seems like the default should be a bit lower that 256, since very few targets can provide 256 apparently. Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology Anything that works is better than anything that doesn't. ------------------------------------------------------------------------