From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda2.sgi.com [192.48.176.25]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id p3R7qHNw205474 for ; Wed, 27 Apr 2011 02:52:18 -0500 Received: from firestarter.dermichi.com (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id 2472B41764C for ; Wed, 27 Apr 2011 00:55:49 -0700 (PDT) Received: from firestarter.dermichi.com (firestarter.dermichi.com [78.41.115.230]) by cuda.sgi.com with ESMTP id WHbxYEldkjjdVl6q for ; Wed, 27 Apr 2011 00:55:49 -0700 (PDT) Received: from dermichi-2-pt.tunnel.tserv23.zrh1.ipv6.he.net ([2001:470:25:4f4::2]) by firestarter.dermichi.com with esmtpsa (TLSv1:CAMELLIA256-SHA:256) (Exim 4.75) (envelope-from ) id 1QEzb8-0007dz-Tp for xfs@oss.sgi.com; Wed, 27 Apr 2011 09:55:47 +0200 Message-ID: <4DB7CC01.8090804@dermichi.com> Date: Wed, 27 Apr 2011 09:55:45 +0200 From: Michael Weissenbacher MIME-Version: 1.0 Subject: Re: xfs performance problem References: <4DB72084.8020205@inf.ethz.ch> <4DB74331.3030804@hardwarefreak.com> In-Reply-To: <4DB74331.3030804@hardwarefreak.com> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: xfs@oss.sgi.com schrieb Stan Hoeppner: > Benjamin Schindler put forth on 4/26/2011 2:44 PM: >> Hi > Also, slap yourself in the forehead at least 3 times for running your > root filesystem on RAID 0. That's akin to riding a motorcycle, naked, > in a blizzard, down a steep, winding, ice covered mountain road with no > guard rails and a 3000 ft drop. ;) > If you are really adventurous and don't care about the data on your root fs use the following mount options: logbsize=256k,delaylog,nobarrier Personally i would only enable "nobarrier" on Server-Class hardware with Battery Backup and proper UPS. But since you are using RAID-0 i suppose you really don't care that much about the data on your root fs. Note that both logbsize and delaylog will only have effect on your root fs if added to grub.conf (real_rootflags=) since remounting won't activate them. Use "cat /proc/mounts" to see if these options were really enabled. hth, Michael _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs