From owner-freebsd-stable@FreeBSD.ORG Thu Dec 18 14:30:44 2008 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id AEDEF106564A for ; Thu, 18 Dec 2008 14:30:44 +0000 (UTC) (envelope-from bsdlist@cogeco.ca) Received: from fep9.cogeco.net (smtp.cogeco.net [216.221.81.25]) by mx1.freebsd.org (Postfix) with ESMTP id 8A3B88FC18 for ; Thu, 18 Dec 2008 14:30:44 +0000 (UTC) (envelope-from bsdlist@cogeco.ca) Received: from [192.168.1.126] (d150-251-98.home.cgocable.net [24.150.251.98]) by fep9.cogeco.net (Postfix) with ESMTP id 45DFBD8C; Thu, 18 Dec 2008 09:30:41 -0500 (EST) Message-ID: <494A5F11.5080701@cogeco.ca> Date: Thu, 18 Dec 2008 09:32:49 -0500 From: Paul MacKenzie User-Agent: Thunderbird 3.0a1pre (Windows/2008022014) MIME-Version: 1.0 To: Steven Hartland References: <494967A9.3000503@elehost.com> <42A989748EC74EB3A6520F7845446360@multiplay.co.uk> In-Reply-To: <42A989748EC74EB3A6520F7845446360@multiplay.co.uk> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: freebsd-stable@freebsd.org Subject: Re: 7.1-PRERELEASE: arcmsr write performance problem X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 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, 18 Dec 2008 14:30:44 -0000 > Just to confirm we see something similar on the box which runs our stats. > > We have updated from 5.4 -> 6.0 -> 6.2 -> 7.0 all have had no effect on > the lockups which happen when the stats run. > > This box is also on an areca controller but it was on an Adaptec and we > saw pretty much the same thing so I suspect its not related to the > controller more to the way things are read from and flushed to disk. > > When we see this problem any ssh sessions become totally unresponsive. > > The stats we are running are a combination of rrdtool updates from a > mysql DB and rrdtool backed mrtg for network stats. > > This is very reproducible here as it "stalls" the box every few mins > when the stats kick off so if there needs to be more investigation > we should be able to help. > > Regards > Steve Hi Steve, Thanks for your message. Do your processes also lock in UFS state? Well I went and bought a new Areca controller to see if this would fix it. It is quicker and seems to work much better but unfortunately I am still seeing the locking. I moved from a PCI-X Areca controller w/ 1 GB of Cache to a PCI-Express controller w/ 2 GB of cache. Main Processor : 800MHz CPU ICache Size : 32KB CPU DCache Size : 32KB CPU SCache Size : 512KB System Memory : 2048MB/533MHz/ECC Firmware Version : V1.46 2008-08-06 BOOT ROM Version : V1.45 2008-08-26 Controller Name : ARC-1231 As I try to see if there is a hardware connection to this I will let you know. I guess I am going to have to replace the full chassis SR2500ALBRPNA and mainboard S5000PAL next. If no solution is found with hardware replacement then am I out of options with using Freebsd? I wonder would there be any need to also try to replace the ram and cpus given there are no errors? Thanks, Paul