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 nAK5T56t116181 for ; Thu, 19 Nov 2009 23:29:05 -0600 Received: from mail.sandeen.net (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id A087C9E8F9 for ; Thu, 19 Nov 2009 21:29:27 -0800 (PST) Received: from mail.sandeen.net (sandeen.net [209.173.210.139]) by cuda.sgi.com with ESMTP id O92kfia7L0H86E7l for ; Thu, 19 Nov 2009 21:29:27 -0800 (PST) Message-ID: <4B062936.30103@sandeen.net> Date: Thu, 19 Nov 2009 23:29:26 -0600 From: Eric Sandeen MIME-Version: 1.0 Subject: Re: Improving XFS desktop performance? References: <74fd948d0911191805m30c34b51m97c2a998dbe0bac3@mail.gmail.com> In-Reply-To: <74fd948d0911191805m30c34b51m97c2a998dbe0bac3@mail.gmail.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: Pedro Ribeiro Cc: xfs@oss.sgi.com Pedro Ribeiro wrote: > Hi all, > > I've been using XFS since 2007 and I although I'm quite happy with its > performance, I am always looking at ways to improve it. > My usage is a regular desktop machine, for software development and > web browsing. > The main performance bottleneck I have is LUKS :-) However, I really > like my data encrypted, so dissing it is not an option. Actually, I'm > the xfs improvements discussed below I was able to get the performance > hit to something like 10% - negligible for me. > > So what I do is specify a 128m log on filesystem creation: > mkfs.xfs -l size=128m /dev/mapper/target > > And on /etc/fstab mount it as; > /dev/mapper/target noatime,logbufs=8,logbsize=256k FWIW, 8 logbufs is default already. > After the above, my delete speed improved drastically. > > Searching around the net I was able to find that using "lazy-count=1" > on mkfs would give a performance increase - how much would that be, > enough for me to do a full backup, format with that option + 128m log > and then restore all again? You should be able to use xfs_admin to turn it on; see the man page for that. > And anything else you recommend? In general, the defaults are optimal for generic use; unless you have a specific use case that is suffering, it's hard to make recommendations beyond the defaults.... ...although we do keep talking about making lazy sb counters default. -Eric > Thanks for your time, > Pedro > > _______________________________________________ > xfs mailing list > xfs@oss.sgi.com > http://oss.sgi.com/mailman/listinfo/xfs > _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs