XFS unlink still slow on 3.1.9 kernel ?

[Christoph Hellwig]

On Mon, Feb 13, 2012 at 06:53:20PM +0100, Richard Ems wrote:
> I will try to install a > 3.2 kernel and will create new XFS partitions
> with "-i size=1024", since we use ACLs a lot for user access.
> Is there a chance to change existing XFS partitions to "-i size=1024" ?

Unfortunately not.  Note that the speedups in 3.2 only matter for
out of line attributes - once you store the ACLs inside the inode the
code that makes it dog slow in old kernels is never used.