XFS unlink still slow on 3.1.9 kernel ?
richard.ems at cape-horn-eng.com
Mon Feb 13 12:06:44 CST 2012
On 02/13/2012 07:02 PM, Christoph Hellwig wrote:
> 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.
Ok, I see, many thanks.
1. use kernels > 3.2, if XFS partition was not created using "-i size=1024"
2. if XFS partition was created using "-i size=1024", kernels < 3.2 will
also be fast while unlinking files with out of line attributes
Richard Ems mail: Richard.Ems at Cape-Horn-Eng.com
Cape Horn Engineering S.L.
C/ Dr. J.J. Dómine 1, 5º piso
Tel : +34 96 3242923 / Fax 924
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