Hi yairi,
I tried adding multiple thread and here is the results:
1. Two NICs (1 connextion):
- iperf 1 thread: 23Gbps
-iperf 2 thread: 39 Gbps
-iperf 4 thread: 39.6 Gbps
-iperf 8 thread: 39.6 Gbps
-iperf 16 thread: 39.6 Gbps
1. Four NIC (4 connection):
- iperf 1 thread: 40Gbps
-iperf 2 thread: 63 Gbps
-iperf 4 thread: 64 Gbps
-iperf 8 thread: 64 Gbps
-iperf 16 thread: 64 Gbps
I think stucking to 64 Gbps is not coming by application as i see that cpus are at 30-40%
Is my conclusion true: the NIC is PCIe limited (8*8=64)?
Thanks