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 oANKPwCN002737 for ; Tue, 23 Nov 2010 14:25:58 -0600 Received: from mail.internode.on.net (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id D812819F669 for ; Tue, 23 Nov 2010 12:27:34 -0800 (PST) Received: from mail.internode.on.net (bld-mail14.adl6.internode.on.net [150.101.137.99]) by cuda.sgi.com with ESMTP id xejZBV3QGf8sfn12 for ; Tue, 23 Nov 2010 12:27:34 -0800 (PST) Date: Wed, 24 Nov 2010 07:27:21 +1100 From: Dave Chinner Subject: Re: Improving XFS file system inode performance Message-ID: <20101123202721.GT22876@dastard> References: <4CEAE7D7.6050401@ssec.wisc.edu> <20101122232528.21b78a9e@galadriel.home> <4CEAEF66.7030708@ssec.wisc.edu> <20101122234419.GK13830@dastard> <4CEBD47F.1040004@ssec.wisc.edu> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <4CEBD47F.1040004@ssec.wisc.edu> 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: Jesse Stroik Cc: Linux XFS On Tue, Nov 23, 2010 at 08:49:35AM -0600, Jesse Stroik wrote: > Dave, > > Thanks. This is precisely what I was looking for. I'll let you > know how it turns out. > > As this file system is likely to continue to increase in number of > files at a fairly rapid rate, we're going to need a long term > strategy. I suspect it may be necessary in the near future to > double or quadruple the memory to 32GB or 64GB, but the uncertainty > in the formula makes me nervous. > > For a situation like this, it would be ideal if we could specify an > inode cache size. That's the third request in a few weeks I've had for being able to fix the inode cache size to either prevent it from growing too large or to prevent it from being reclaimed prematurely. I doubt I'll ever be able to get the VFS cache capped (people have tried in the past with no success), so I'm going to look at providing a method for XFS to provide limits on the size of it's inode cache. Cheers, Dave. -- Dave Chinner david@fromorbit.com _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs