From owner-freebsd-stable@FreeBSD.ORG Wed Jun 19 15:10:16 2013 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 2A635E88 for ; Wed, 19 Jun 2013 15:10:16 +0000 (UTC) (envelope-from prvs=1882457d64=killing@multiplay.co.uk) Received: from mail1.multiplay.co.uk (mail1.multiplay.co.uk [85.236.96.23]) by mx1.freebsd.org (Postfix) with ESMTP id C05C21930 for ; Wed, 19 Jun 2013 15:10:15 +0000 (UTC) Received: from r2d2 ([82.69.141.170]) by mail1.multiplay.co.uk (mail1.multiplay.co.uk [85.236.96.23]) (MDaemon PRO v10.0.4) with ESMTP id md50004423531.msg for ; Wed, 19 Jun 2013 16:10:14 +0100 X-Spam-Processed: mail1.multiplay.co.uk, Wed, 19 Jun 2013 16:10:14 +0100 (not processed: message from valid local sender) X-MDDKIM-Result: neutral (mail1.multiplay.co.uk) X-MDRemoteIP: 82.69.141.170 X-Return-Path: prvs=1882457d64=killing@multiplay.co.uk X-Envelope-From: killing@multiplay.co.uk X-MDaemon-Deliver-To: freebsd-stable@freebsd.org Message-ID: <4A59B81311B944C3A740BD65455E3E60@multiplay.co.uk> From: "Steven Hartland" To: =?iso-8859-1?Q?Dennis_K=F6gel?= References: <15E6A1D4AB1D43D49C1DA02EAF463126@multiplay.co.uk> <27EED7A0-AB0B-43B5-8B7F-B424852DBD65@neveragain.de> Subject: Re: Weird I/O hangs (9.1R, arcsas, interrupt spikes on uhci0) Date: Wed, 19 Jun 2013 16:10:22 +0100 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157 Cc: freebsd-stable@freebsd.org, Ronald Klop X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 19 Jun 2013 15:10:16 -0000 ----- Original Message ----- From: "Dennis Kögel" > > I'm not familar with that model of the areca but have you tried > > with the standard OS driver or does it not support that card? > > The ARC1320 (non-raid) unfortunately isn't supported by the in-tree driver. > > > Also when you see hangs can you access the disk directly or not > > e.g. dd if=/dev/da0 of=/dev/null bs=1m count=10 ? > > Interesting idea. The dd then hangs right until everything else resumes as well. > > ^T during hang says: load: 12.39 cmd: dd 7847 [physrd] 6.36r 0.00u 0.00s 0% 1632k So it sounds like your seeing device level hangs which indicates either a driver, HW, controller FW or disk level issue. You might want to try adding a seperate disk (different type) to the controller which isn't used and perform the same test to try and eliminate disk's as the source of the issue. Also see what "gstat -d" shows during this? Do you see a big spike of activity either side? Regards Steve ================================================ This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337 or return the E.mail to postmaster@multiplay.co.uk.