RBD cluster of 3 Optiplex 9020 with 500GB 7200RPM dedicated drive with colocated journal. Ceph 0.80.5. Ubuntu 14.04. Single 1gbit network connection. TrendNET 8port. Test machine Optiplex 780 Intel Core 2 Quad Q9400, 8GB RAM. This run is with XFS on RBD with noatime. Not a fresh boot...