Gluster 3.6.6 / CentOS 7.1 / dual Intel E5-2630v3 / 128GB RAM / Mellanox 10G Ethernet I just added a 3rd replica to a 2 replica volume and I'm noticing the network throughput is very slow replicating to the new node, ~30-60MB/s. I'm on 10gig with SSD bricks and typically get 300+MB/s for normal file transfers. Looking at this thread: http://www.gluster.org/pipermail/gluster-users/2014-January/015554.html it seems this isn't an isolated issue and there is mention of re-factoring the replication code. I see also see glusterfsd cpu usage averaging ~200% and peaks of 4-500% occasionally on node1/node2, but node3 is averaging ~50%. This cpu overhead exists even when network throughput drops to <1MB/sec. Any insight into why this process is so slow and why CPU usage is so high? Lastly, this storage is for an Ovirt storage domain and while the add-brick operation is running all the VM's hang. But I can write to a fuse mount point so the volume isn't RO. Thanks, Steve