I’m just starting to use the connectx-5 with iperf3 to replicate one lab that i created with the connectx-4 but no luck at the moment.
I used the same 2 x server hardware (Supermicro X9DRi-LN4F+ - E5-2600 2U with 2 x 2.60 GHz Eight (octa) Core Xeon E5-2650 V2 and 48Gb of RAM)
and while with connectx-4 i can reach 98Gbps (RX and TX) with connectx-5 i can reach only around 68Gbps.
If i connect one of the servers with connectx-5 with one of the connectx-4 server and do traffic connectx-5 ===> connectx-4 TX is 98Gbps but when i do it
in reverse connectx-4 ===> connectx-5, RX of the connectx-5 is 68Gbps.
I have exactly the same Os (centos 7.4) with the same config (i even try to update the OFED drivers to the latest).
Do anyone experienced the same?