Hello, If anybody out there has tried this or thought about it, I'd like to know... I've been thinking about ways to squeeze as much performance as possible from the NICs on a Ceph OSD node. The nodes in our cluster (6 x OSD, 3 x MGR/MON/MDS/RGW) currently have 2 x 10GB ports. Currently, one port is assigned to the front-side network, and one to the back-side network. However, there are times when the traffic on one side or the other is more intense and might benefit from a bit more bandwidth. The idea I had was to bond the two ports together, and to run the back-side network in a tagged VLAN on the combined 20GB LACP port. In order to keep the balance and prevent starvation from either side it would be necessary to apply some sort of a weighted fair queuing mechanism via the 'tc' command. The idea is that if the client side isn't using up the full 10GB/node, and there is a burst of re-balancing activity, the bandwidth consumed by the back-side traffic could swell to 15GB or more. Or vice versa. From what I have read and studied, these algorithms are fairly responsive to changes in load and would thus adjust rapidly if the demand from either side suddenly changed. Maybe this is a crazy idea, or maybe it's really cool. Your thoughts? Thanks. -Dave -- Dave Hall Binghamton University kdhall@binghamton.edu