From: Peter Niemayer <niemayer@isg.de>
To: linux-xfs@oss.sgi.com
Subject: observed significant performance improvement using "delaylog" in a real-world application
Date: Tue, 10 Aug 2010 18:01:33 +0200 [thread overview]
Message-ID: <i3rt4t$46c$1@dough.gmane.org> (raw)
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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next reply other threads:[~2010-08-10 16:01 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-10 16:01 Peter Niemayer [this message]
2010-08-11 0:08 ` observed significant performance improvement using "delaylog" in a real-world application Dave Chinner
2010-08-11 18:08 ` Peter Niemayer
2010-08-11 8:03 ` Michael Monnerie
2010-08-11 9:45 ` Peter Niemayer
2010-08-11 12:28 ` Michael Monnerie
2010-08-11 17:01 ` Peter Niemayer
2010-08-11 22:31 ` Michael Monnerie
2010-08-11 23:44 ` Dave Chinner
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