Slow XFS write

[Martin LEUSCH <sce.tech@imereos.fr>]

Hi,


I have a NFS server with a hardware RAID5 on 3 HDD of 6 TB. I have a 
system partition with ext4 and a data partition with XFS.

I get only 10 MB/s in write speed on the XFS data partition and 80 MB/s 
on the system partition.


XFS mount option:

/dev/sda4 on /var/srv/nfs type xfs (rw,relatime,attr2,inode64,noquota)

Is there a way to have better performance? Is XFS a good choice in this 
situation?