Hi all, I'm running the l3fwd DPDK sample application and using Moongen's HW NIC timestamp capabilities through this suite <https://github.com/ztz1989/software-switches/tree/artifacts> for benchmarking l3fwd's latency with 64B packets. I'm running tests both with Intel X520 and X710 NICs. While X520 NICs give me meaningful values (e.g. 8.5 us at 10Gbps, 7.86 us at 5Gbps, 10 us at 1Gbps), Intel X710 show an unexpected increase when running at line rate (16.45 us at 10Gbps), while at lower rates results are quite similar as Intel X520 (7.42 us at 5Gbps, 8.24 us at 1Gbps). Even playing with different parameters (such as DPDK's l3fwd minimum batch transmit size) the problem still occurs. Do you have any insight about Intel X710 timestamping and how this can happen? Thanks, Marco
