Am Donnerstag 09 August 2007 schrieb David Chinner:
> On Thu, Aug 09, 2007 at 08:20:55AM +0200, Martin Steigerwald wrote:
> > Am Donnerstag 09 August 2007 schrieb David Chinner:
> > > > What would be the impact of atime versus noatime on XFS? What is
> > > > the recommended setting for XFS? Are there any plans to implement
> > > > relatime logic - maybe even the improved one by Ingo Molnar -
> > > > into XFS?
> > >
> > > relatime is a VFS layer construct - it should work with XFS right
> > > now.
> > Thanks for your answer.
> > XFS says:
> > XFS: unknown mount option [relatime].
> That's because it's supposed to be encoded in the mount flags (i.e.
> intercepted by the mount binary and not passed to the kernel
> directly). I think you need a more recent mount binary....
Exactly. After I upgraded mount debian package 2.12r-19 to 2.13~rc3-1
mount -o remount,relatime works.
I got a response back from Ingo and he said, that on ext3 atime updates
are very visible while XFS does some journalling tricks to mitigate it.
He doubts that I will see much difference on XFS as it has less strict
synchronisation rules than ext3.
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
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