I have two Mellanox Connectx-5 adapters connected back to back. Link speed shows 40Gbps. I am using widows server 2016. Tried with different PCIe slots and tested with iperf3. But in case of TCP speed reaches up to 650 MB/s only and in UDP it only achieves nearby 450 MB/s.
I am sure I am missing out some setting but can not figure out what.
Can anybody help me in this case?
Could you try this:
* Install WinOF-2 v.1.70
* Try the Microsoft tool TechNet NTttcp Utility: Profile and Measure Windows Networking Performance
* Verify RDMA performance by running nd_read_bw/nd_write_bw ( check WinOF user manual)