From: Christoph Hellwig Subject: Re: ZFS, XFS, and EXT4 compared Date: Thu, 30 Aug 2007 14:20:02 +0100 Message-ID: <20070830132002.GA4086@infradead.org> References: <1188454611.23311.13.camel@toonses.gghcwest.com> <1188457666.24970.94.camel@edge.yarra.acx> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: "Jeffrey W. Baker" , zfs-discuss@opensolaris.org, xfs@oss.sgi.com, linux-ext4@vger.kernel.org To: Nathan Scott Return-path: Received: from pentafluge.infradead.org ([213.146.154.40]:57972 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753402AbXH3NUP (ORCPT ); Thu, 30 Aug 2007 09:20:15 -0400 Content-Disposition: inline In-Reply-To: <1188457666.24970.94.camel@edge.yarra.acx> Sender: linux-ext4-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org On Thu, Aug 30, 2007 at 05:07:46PM +1000, Nathan Scott wrote: > To improve metadata performance, you have many options with XFS (which > ones are useful depends on the type of metadata workload) - you can try > a v2 format log, and mount with "-o logbsize=256k", try increasing the > directory block size (e.g. mkfs.xfs -nsize=16k, etc), and also the log > size (mkfs.xfs -lsize=XXXXXXb). Okay, these suggestions are one too often now. v2 log and large logs/log buffers are the almost universal suggestions, and we really need to make these defaults. XFS is already the laughing stock of the Linux community due to it's absurdely bad default settings.