On Fri, Apr 13, 2012 at 11:25:58AM +0200, Philip wrote: > Sometimes the io-latency skyrockets and there is no > access possible on the raid for >10 seconds. Have you checked http://community.gluster.org/a/linux-kernel-tuning-for-glusterfs/ ? If you have a large amount of RAM and a lot of writes, maybe you're accumulating large amounts of dirty data which is then being synchronously flushed.
