From mboxrd@z Thu Jan 1 00:00:00 1970 From: phillip@lougher.demon.co.uk Subject: Re: Allocation strategy - dynamic zone for small files Date: Tue, 14 Nov 2006 15:19:15 +0000 Message-ID: References: <20061113235749.GK6012@schatzie.adilger.int> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: hbryan@us.ibm.com, jsipek@fsl.cs.sunysb.edu, atraeger@cs.sunysb.edu, linux-fsdevel@vger.kernel.org, phillip.lougher@gmail.com Return-path: Received: from anchor-post-33.mail.demon.net ([194.217.242.91]:63506 "EHLO anchor-post-33.mail.demon.net") by vger.kernel.org with ESMTP id S965921AbWKNPU0 (ORCPT ); Tue, 14 Nov 2006 10:20:26 -0500 To: "Andreas Dilger" , thephilips@gmail.com In-Reply-To: <20061113235749.GK6012@schatzie.adilger.int> Sender: linux-fsdevel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org adilger@clusterfs.com wrote: > At the filesystem summit we DID find a surprising number of small files > even when the whole system was examined. We discussed storing small > files directly in the inode along with other EAs (this would require > larger inodes). This improves data locality and performance (i.e. stat > of the file loads the small file data into cache), though the assumption > is that there will be an increasing number of EAs on files in the future. So it won't be feasible to store EAs + small file in the inode, or in the future it won't be feasible to store just EAs in the inode for most files? Are there any stats showing the current amount/size of EAs per file, and what it is expected to be in the future? Phillip