From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id q46AVrNa184661 for ; Sun, 6 May 2012 05:31:53 -0500 Received: from mail.lichtvoll.de (mondschein.lichtvoll.de [194.150.191.11]) by cuda.sgi.com with ESMTP id 8POigXoDOHXeBlxG for ; Sun, 06 May 2012 03:31:51 -0700 (PDT) From: Martin Steigerwald Subject: Re: suddenly slow writes on XFS Filesystem Date: Sun, 6 May 2012 12:31:50 +0200 References: <4FA63DDA.9070707@profihost.ag> (sfid-20120506_121127_622020_FC89E0F4) In-Reply-To: <4FA63DDA.9070707@profihost.ag> MIME-Version: 1.0 Message-Id: <201205061231.50526.Martin@lichtvoll.de> 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 Cc: Stefan Priebe Am Sonntag, 6. Mai 2012 schrieb Stefan Priebe: > Hi, Hi Stefan, > since a few days i've experienced a really slow fs on one of our > backup systems. > > I'm not sure whether this is XFS related or related to the Controller > / Disks. > > It is a raid 10 of 20 SATA Disks and i can only write to them with > about 700kb/s while doing random i/o. I tried vanilla Kernel 3.0.30 > and 3.3.4 - no difference. Writing to another partition on another xfs > array works fine. How do you measure the 700 KB/s? Anything in dmesg? I and likely others here would be interested in vmstat and iostat outputs during slowness. See: http://xfs.org/index.php/XFS_FAQ#Q:_What_information_should_I_include_when_reporting_a_problem.3F Ciao, -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7 _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs