sweep

Overview ¶

sweep drives every backend through the same three loops -- transmit, receive, forward -- so a comparison between them measures the backend and not four different programs.

sweep -io mlx5     -i eno2         -mode tx  -queues 4 -cpus 0-3
sweep -io dpdk     -i 0000:c1:00.1 -mode rx  -queues 8 -cpus 0-7
sweep -io afxdp    -i eno2         -mode fwd -queues 2 -cpus 0-1
sweep -io afpacket -i eno2         -mode tx  -queues 1

It prints one RESULT line with what the application counted. The authoritative rate for a benchmark is the port's own counters, read by the harness around the measurement window; this count is the cross-check.

mlx5 and dpdk need their build tags; without them those two backends are simply not registered:

go build -tags "mlx5 dpdk" ./examples/sweep