From: Dave Chinner <david@fromorbit.com>
To: Willy Tarreau <w@1wt.eu>
Cc: Michael Monnerie <michael.monnerie@is.it-management.at>, xfs@oss.sgi.com
Subject: Re: XFS status update for August 2010
Date: Sun, 5 Sep 2010 23:08:09 +1000 [thread overview]
Message-ID: <20100905130809.GI705@dastard> (raw)
In-Reply-To: <20100905104739.GC27623@1wt.eu>
On Sun, Sep 05, 2010 at 12:47:39PM +0200, Willy Tarreau wrote:
> On Sun, Sep 05, 2010 at 11:37:03AM +0200, Michael Monnerie wrote:
> > On Sonntag, 5. September 2010 Willy Tarreau wrote:
> > > I've just installed 2.6.35.4
> >
> > Try the following mount options:
> > relatime,logbufs=8,logbsize=256k,attr2,barrier,largeio,swalloc,delaylog
FYI:
- relatime,logbufs=8,attr=2,barrier are all defaults.
- largeio only affects stat(2) output if you have
sunit/swidth set - unlikely on a laptop drive, and has
no effect on unlink performance.
- swalloc only affects allocation if sunit/swidth are set
and has no effect on unlink performance.
> Ah thanks for the info Michael, indeed it's a *lot* better: down from 57s
> to 1.3s !
- delaylog is the option providing that improvement.
You should keep in mind that delaylog is a brand new experimental
feature (as it warns in dmesg output on mount) and as such has the
potential to eat your data. That being said, I've been running
my laptop and my production machines (except for the backup target)
for a couple of months now with it and haven't had any problems...
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
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next prev parent reply other threads:[~2010-09-05 13:07 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-02 14:59 XFS status update for August 2010 Christoph Hellwig
2010-09-02 14:59 ` Christoph Hellwig
2010-09-05 7:44 ` Willy Tarreau
2010-09-05 7:44 ` Willy Tarreau
2010-09-05 9:37 ` Michael Monnerie
2010-09-05 10:47 ` Willy Tarreau
2010-09-05 13:08 ` Dave Chinner [this message]
2010-09-05 18:56 ` Willy Tarreau
2010-09-05 23:36 ` Dave Chinner
2010-09-06 5:19 ` Willy Tarreau
2010-09-06 5:49 ` xfs mount/create options (was: XFS status update for August 2010) Michael Monnerie
2010-09-08 5:38 ` Michael Monnerie
2010-09-08 10:58 ` Dave Chinner
2010-09-08 13:38 ` Michael Monnerie
2010-09-08 14:51 ` Dave Chinner
2010-09-08 15:24 ` Emmanuel Florac
2010-09-08 23:34 ` Michael Monnerie
2010-09-08 23:30 ` Michael Monnerie
2010-09-09 7:27 ` Dave Chinner
2010-09-09 8:29 ` Michael Monnerie
2010-09-06 3:22 ` XFS status update for August 2010 Eric Sandeen
2010-09-06 5:10 ` Michael Monnerie
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