From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda1.sgi.com [192.48.157.11]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id p4V0BXED014838 for ; Mon, 30 May 2011 19:11:33 -0500 Received: from ipmail05.adl6.internode.on.net (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id F259614E1CB4 for ; Mon, 30 May 2011 17:11:30 -0700 (PDT) Received: from ipmail05.adl6.internode.on.net (ipmail05.adl6.internode.on.net [150.101.137.143]) by cuda.sgi.com with ESMTP id StKR6o3uCr9BEjHO for ; Mon, 30 May 2011 17:11:30 -0700 (PDT) Date: Tue, 31 May 2011 10:11:27 +1000 From: Dave Chinner Subject: Re: logbufs default value Message-ID: <20110531001127.GF561@dastard> References: <4DE0A80C.7060806@dermichi.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <4DE0A80C.7060806@dermichi.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: Michael Weissenbacher Cc: xfs@oss.sgi.com On Sat, May 28, 2011 at 09:45:16AM +0200, Michael Weissenbacher wrote: > Hi List! > From linux-2.6.39/Documentation/filesystems/xfs.txt: > logbufs=value > Set the number of in-memory log buffers. Valid numbers range > from 2-8 inclusive. > The default value is 8 buffers for filesystems with a > blocksize of 64KiB, 4 buffers for filesystems with a blocksize > of 32KiB, 3 buffers for filesystems with a blocksize of 16KiB > and 2 buffers for all other configurations. Increasing the > number of buffers may increase performance on some workloads > at the cost of the memory used for the additional log buffers > and their associated control structures. > > Is this still valid? I thought that newer kernels would always use 8 as > default? No, it's not. Patches to fix the documentation are welcome. Cheers, Dave. -- Dave Chinner david@fromorbit.com _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs