On Mon, Feb 13, 2012 at 06:26:46PM +0100, Richard Ems wrote:
> YES. All files (and dirs) that I checked do show something as
> 0: [0..7]: 18531216..18531223
> So, what improvements can I expect from a kernel > 3.2 ?
> Can I read somewhere about the changes/patches introduced?
On some crazy workloads I've seen speedups up to a factor of 10.000 (5
orders or magnitude). You probably won't get that much of a speedup,
but it will still be significant.
The patch in mainline for this is:
Author: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Sat Aug 27 14:45:11 2011 +0000
xfs: avoid synchronous transactions when deleting attr blocks
> Is there another way to mount/create/mkfs the XFS to improve the unlink
> time for this case?
Try increasing the inode size during filesystem creating using the
"-i size=512" option or even "-i size=1024" if you still have
out of line attributes. The should give you even bigger speedups
for this workload than the patch above.