Re: Strange performance change 59 -> 61/62

[Martin J. Bligh]

> 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.