From: David Chinner <dgc@sgi.com>
To: Just Marc <marc@corky.net>
Cc: Barry Naujok <bnaujok@sgi.com>, xfs@oss.sgi.com
Subject: Re: xfs_fsr, performance related tweaks
Date: Fri, 29 Jun 2007 17:08:14 +1000 [thread overview]
Message-ID: <20070629070814.GR31489@sgi.com> (raw)
In-Reply-To: <4684A98B.1030000@corky.net>
On Fri, Jun 29, 2007 at 07:41:15AM +0100, Just Marc wrote:
> Barry Naujok wrote:
> >You can use the xfs_io chattr command to mark known files as
> >nodefrag. Using the chattr -R option can be used to recurse
> >directories.
>
> That's right but I can't do this on a filesystem that's just been
> defragged say a minute ago, and in the mean time 20 new files got added
> (I don't know what these files are... ).
So walk the filesystem with a script that queries the number of
extents in each file, and if they have a single extent then
run the xfs_io on them.
Cheers,
Dave.
--
Dave Chinner
Principal Engineer
SGI Australian Software Group
next prev parent reply other threads:[~2007-06-29 7:08 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-28 12:47 xfs_fsr, performance related tweaks Just Marc
2007-06-28 20:38 ` Eric Sandeen
2007-06-29 0:52 ` Andi Kleen
2007-06-29 6:21 ` Just Marc
2007-06-29 6:41 ` Barry Naujok
2007-06-29 6:41 ` Just Marc
2007-06-29 7:08 ` David Chinner [this message]
2007-06-29 7:16 ` Just Marc
2007-06-29 7:33 ` Nathan Scott
2007-06-29 7:41 ` David Chinner
2007-06-29 7:39 ` Just Marc
2007-06-30 17:17 ` Eric Sandeen
2007-07-01 22:43 ` David Chinner
-- strict thread matches above, loose matches on Subject: below --
2007-06-28 12:47 Just Marc
2007-06-29 0:12 ` Nathan Scott
2007-06-29 6:31 ` Just Marc
2007-06-29 8:13 ` Andi Kleen
2007-06-29 8:23 ` Just Marc
2007-06-29 8:58 ` Andi Kleen
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