From: Stan Hoeppner <stan@hardwarefreak.com>
To: xfs@oss.sgi.com
Subject: Re: noatime,nodiratime?
Date: Wed, 19 May 2010 13:00:05 -0500 [thread overview]
Message-ID: <4BF42725.8060903@hardwarefreak.com> (raw)
In-Reply-To: <87mxvveqyq.fsf@petole.demisel.net>
Nicolas KOWALSKI put forth on 5/19/2010 12:33 PM:
> Stan Hoeppner <stan@hardwarefreak.com> writes:
>> Need a little education here. I have a general understanding of what the
>> inode access timestamps "are" but I have no idea what, if any, applications
>> make use of these access times. I see posts all over Google land saying to
>> use "noatime,nodiratime,logbufs=8" for XFS mount options to increase
>> performance.
>
> BTW, about the mount options for XFS, is there a way to check for the
> default values (things like logbsize, logbufs, something else)?
>
> I used to have noatime,logbufs=8,logbsize=256k on my fileserver, not
> sure if these are still necessary.
Yes, the defaults for each parameter are in your mount man page.
logbsize=256K is higher than the default, which is 32K for any system with
over 32MB RAM. logbufs=8 will be the default if your blocksize is 64K. If
your blocksize is 4K you'll get logbufs=2 by default. This is all in the
XFS section of man mount.
--
Stan
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next prev parent reply other threads:[~2010-05-19 17:56 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-19 14:13 noatime,nodiratime? Stan Hoeppner
2010-05-19 17:33 ` noatime,nodiratime? Nicolas KOWALSKI
2010-05-19 18:00 ` Stan Hoeppner [this message]
2010-05-19 18:24 ` noatime,nodiratime? Christoph Hellwig
2010-05-19 19:10 ` noatime,nodiratime? Nicolas KOWALSKI
2010-05-19 18:23 ` noatime,nodiratime? Christoph Hellwig
2010-05-19 19:25 ` noatime,nodiratime? Stan Hoeppner
2010-05-19 19:50 ` noatime,nodiratime? Eric Sandeen
2010-05-19 23:46 ` noatime,nodiratime? Stan Hoeppner
2010-05-26 14:53 ` noatime,nodiratime? Michael Monnerie
2010-05-26 23:18 ` noatime,nodiratime? Dave Chinner
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