From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay1.corp.sgi.com [137.38.102.111]) by oss.sgi.com (Postfix) with ESMTP id E124F7FB6 for ; Thu, 7 Mar 2013 07:44:41 -0600 (CST) Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by relay1.corp.sgi.com (Postfix) with ESMTP id CA16B8F8066 for ; Thu, 7 Mar 2013 05:44:41 -0800 (PST) Received: from greer.hardwarefreak.com (mo-65-41-216-221.sta.embarqhsd.net [65.41.216.221]) by cuda.sgi.com with ESMTP id mHGlM9g0WKyAC1G0 for ; Thu, 07 Mar 2013 05:44:41 -0800 (PST) Message-ID: <513899D3.80907@hardwarefreak.com> Date: Thu, 07 Mar 2013 07:44:51 -0600 From: Stan Hoeppner MIME-Version: 1.0 Subject: Re: XFS IO multiplication problem on centos/rhel 6 using hp p420i raid controllers References: <1362060736.1247.30.camel@seahawk> <20130228194023.GQ5551@dastard> <1362577992.1247.84.camel@seahawk> <20130307035737.GC6369@dastard> <1362651128.16657.13.camel@seahawk> <513891D7.4060801@hardwarefreak.com> <1362663188.16657.20.camel@seahawk> In-Reply-To: <1362663188.16657.20.camel@seahawk> Reply-To: stan@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 Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com To: Dennis Kaarsemaker Cc: xfs@oss.sgi.com On 3/7/2013 7:33 AM, Dennis Kaarsemaker wrote: > The "ten times as many bytes" is constant, so it is constantly writing > ten times as much data. Where in the IO stack are you counting the bytes? Are 10x as many bytes actually hitting the AGs? I.e. are you consuming 10x more (real--not counting preallocation) space in the filesystem? Or are you simply seeing larger IOs in flight per unit time, but the same total amount of IO bytes? -- Stan _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs