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
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
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