XFS with nfs over rdma performance

[Emmanuel Florac]

Le Tue, 22 Jan 2013 12:10:28 +0100
Samuel Kvasnica <samuel.kvasnica at ims.co.at> écrivait:

> We do not see any remarkable CPU load.

What does the output from iostat -mx 3 looks like while  you're writing
or reading?
 
> The interesting point is, we use btrfs filesystem on server instead of
> xfs now (with otherwise same config) and we are getting consistent,
> steady throughput
> around 1.2-1.3GB/s.
> 
> What is wrong with XFS on 3.x kernel ? Any hints what parameters to
> look at ?

What mkfs and mount options did you use? With a large array nobarrier
and inode64 may make a big difference.

-- 
------------------------------------------------------------------------
Emmanuel Florac     |   Direction technique
                    |   Intellique
                    |	<eflorac at intellique.com>
                    |   +33 1 78 94 84 02
------------------------------------------------------------------------