Forward this from the linux-xfs list, in hoping that decision-makers will consider XFS as the default suse OS install choice. It continually bests other file systems in optimized configuration performance tests and these new improvements sound like they only add more speed to the equation. For nearly all systems, disk speed is the bottle neck, so using the best solution possible should be strongly considered the default choice for all users -- regardless of 'political' concerns (which seem to often over-rule practicality, unfortunately). Linda p.s. I am not part of the xfs project. I've just used it with open suse (or previously, Suse) since ~ 2002 and have never regretted it. Current filesystem read rates using XFS are about 1GB/second on sustained multi-gigabyte reads. Using 1Gbit ethernet, Samba gets 97MB/s read from disk to 115 MB/s read from memory and 125MB/s writes to memory or disk. -------- Original Message -------- Subject: observed significant performance improvement using "delaylog" in a real-world application Date: Tue, 10 Aug 2010 18:01:33 +0200 From: Peter Niemayer <niemayer@isg.de> To: linux-xfs@oss.sgi.com Hi all, we use XFS for a very I/O-intensive, in-house developed real-time database application, and whenever we see new or significantly changed file-systems becoming available, we run a benchmark using this application on a conserved, fixed real-world data set. I'm pleased to state that using the experimental "delaylog" mount option (in vanilla linux-2.6.35) we measured a 17% performance increase for our benchmark scenario. (Other mount-options in use both before and after the "delaylog" option: noatime,nodiratime,nobarrier) That's a lot given that XFS was the fastest performing file-system for this application already. It's also a promising result regarding stability, as several other tests (using e.g. reiser4 or ceph) in the past led to crashes in the same benchmark scenario. So thanks to all contributing developers for this significant optimization! Regards, Peter Niemayer _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org