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Date: Fri, 21 Feb 2003 23:46:16 -0800
From: "Martin J. Bligh" <mbligh@aracnet.com>
To: Andrew Morton <akpm@digeo.com>
cc: linux-kernel@vger.kernel.org
Subject: Re: Strange performance change 59 -> 61/62
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> mark_inode_dirty() tends to be called _very_ frequently.  Too frequently.
> 
> Could you try remounting all filesystems noatime with
> 
> 	mount /mnt/point -o remount,noatime
> 
> and the below patch will prevent us calling the barrier-happy
> current_kernel_time() for noatime mounts.

Cool, that works nicely - thanks.

2.5.59-mjb6:             84 __mark_inode_dirty
2.5.61-mjb1:            594 __mark_inode_dirty
2.5.61-mjb1-no_mb:       74 __mark_inode_dirty
2.5.61-mjb1-noatime:     65 __mark_inode_dirty

M.