Sounds weird to me. Don't you have some element in the network that is just limited to 5140 and above it, it starts to fix fragmentation or so. I can remember asking the data center to enable 9000 and they never did and also were experimenting with some software defined network. I will bet that peer to peer you should have no issues when testing mtu 9000.
> For example, we found that many 10g NICs don't handle full-sized jumbo > frames (9000) without a performance hit. We got a huge performance > improvement by finding the exact optimal MTU (5139 on a cluster I am > looking at - at 5140 it falls off a cliff). Just one example. > _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
