Hi everyone, we have done some basic testing with DPDK. We are testing the baseline forwarding performance (table lookup code has been commented out and we statically forward traffic among a 1-1 incoming to outgoing port assignment), but we get weird results (attached).
For 256-byte packets the average latency is lower than for 128-byte packets, but for 1500-byte packets the latency is much higher than the previous two packet sizes. Could you please let us know if this is something expected, since it is counter-intuitive, or if we are having some obvious configuration mistake? Our configuration is as following: Best regards, Chris *Command* sudo ./build/l3fwd -c 0xffff -n 4 -- -p 0xfff -P --config="(0,0,1),(1,0,2),(2,0,3),(3,0,4),(4,0,8),(5,0,9),( 6,0,10),(7,0,11),(8,0,12),(9,0,13),(10,0,14),(11,0,15)" *Core assignment (one core per one port)* L3FWD: entering main loop on lcore 1 L3FWD: -- lcoreid=1 portid=0 rxqueueid=0 L3FWD: entering main loop on lcore 2 L3FWD: -- lcoreid=2 portid=1 rxqueueid=0 L3FWD: entering main loop on lcore 3 L3FWD: -- lcoreid=3 portid=2 rxqueueid=0 L3FWD: entering main loop on lcore 4 L3FWD: -- lcoreid=4 portid=3 rxqueueid=0 L3FWD: lcore 5 has nothing to do L3FWD: lcore 6 has nothing to do L3FWD: lcore 7 has nothing to do L3FWD: entering main loop on lcore 8 L3FWD: -- lcoreid=8 portid=4 rxqueueid=0 L3FWD: entering main loop on lcore 9 L3FWD: -- lcoreid=9 portid=5 rxqueueid=0 L3FWD: entering main loop on lcore 10 L3FWD: -- lcoreid=10 portid=6 rxqueueid=0 L3FWD: entering main loop on lcore 11 L3FWD: -- lcoreid=11 portid=7 rxqueueid=0 L3FWD: entering main loop on lcore 12 L3FWD: -- lcoreid=12 portid=8 rxqueueid=0 L3FWD: entering main loop on lcore 13 L3FWD: -- lcoreid=13 portid=9 rxqueueid=0 L3FWD: entering main loop on lcore 14 L3FWD: -- lcoreid=14 portid=10 rxqueueid=0 L3FWD: entering main loop on lcore 15 L3FWD: -- lcoreid=15 portid=11 rxqueueid=0 L3FWD: lcore 0 has nothing to do
