3.3.1. L2 Ethernet Interface Loop

Following sections include summary graphs of DPDK Testpmd Phy-to-Phy performance with L2 Ethernet Interface Loop, including NDR throughput (zero packet loss) and PDR throughput (<0.5% packet loss). Performance is reported for Testpmd running in multiple configurations of Testpmd pmd thread(s), a.k.a. Testpmd data plane thread(s), and their physical CPU core(s) placement.

3.3.1.1. NDR Throughput

Testpmd NDR 64B packet throughput in 1t1c setup (1thread, 1core) is presented in the graph below.

Figure 1. Testpmd 1thread 1core - NDR Throughput for Phy-to-Phy L2 Ethernet Looping.

CSIT source code for the test cases used for above plots can be found in CSIT git repository:

$ $CSIT/dpdk-tests/perf
$ grep -E "64B-1t1c-eth-l2xcbase-testpmd-ndrdisc" *

10ge2p1x520-eth-l2xcbase-testpmd-ndrpdrdisc.robot:| tc01-64B-1t1c-eth-l2xcbase-testpmd-ndrdisc
10ge2p1x710-eth-l2xcbase-testpmd-ndrpdrdisc.robot:| tc01-64B-1t1c-eth-l2xcbase-testpmd-ndrdisc
40ge2p1xl710-eth-l2xcbase-testpmd-ndrpdrdisc.robot:| tc01-64B-1t1c-eth-l2xcbase-testpmd-ndrdisc

Testpmd NDR 64B packet throughput in 2t2c setup (2thread, 2core) is presented in the graph below.

Figure 2. Testpmd 2threads 2cores - NDR Throughput for Phy-to-Phy L2 Ethernet Looping.

CSIT source code for the test cases used for above plots can be found in CSIT git repository:

$ $CSIT/dpdk-tests/perf
$ grep -E "64B-2t2c-eth-l2xcbase-testpmd-ndrdisc" *

10ge2p1x520-eth-l2xcbase-testpmd-ndrpdrdisc.robot:| tc07-64B-2t2c-eth-l2xcbase-testpmd-ndrdisc
10ge2p1x710-eth-l2xcbase-testpmd-ndrpdrdisc.robot:| tc07-64B-2t2c-eth-l2xcbase-testpmd-ndrdisc
40ge2p1xl710-eth-l2xcbase-testpmd-ndrpdrdisc.robot:| tc07-64B-2t2c-eth-l2xcbase-testpmd-ndrdisc

3.3.1.2. PDR Throughput

Testpmd PDR 64B packet throughput in 1t1c setup (1thread, 1core) is presented in the graph below. PDR measured for 0.5% packet loss ratio.

Figure 3. Testpmd 1thread 1core - PDR Throughput for Phy-to-Phy L2 Ethernet Looping.

CSIT source code for the test cases used for above plots can be found in CSIT git repository:

$ csit/tests/perf
$ grep -E "64B-1t1c-eth-l2xcbase-testpmd-pdrdisc" *

10ge2p1x520-eth-l2xcbase-testpmd-ndrpdrdisc.robot:| tc02-64B-1t1c-eth-l2xcbase-testpmd-pdrdisc
10ge2p1x710-eth-l2xcbase-testpmd-ndrpdrdisc.robot:| tc02-64B-1t1c-eth-l2xcbase-testpmd-pdrdisc
40ge2p1xl710-eth-l2xcbase-testpmd-ndrpdrdisc.robot:| tc02-64B-1t1c-eth-l2xcbase-testpmd-pdrdisc

Testpmd PDR 64B packet throughput in 2t2c setup (2thread, 2core) is presented in the graph below. PDR measured for 0.5% packet loss ratio.

Figure 4. Testpmd 2thread 2core - PDR Throughput for Phy-to-Phy L2 Ethernet Looping.

CSIT source code for the test cases used for above plots can be found in CSIT git repository:

$ csit/tests/perf
$ grep -E "64B-2t2c-eth-l2xcbase-testpmd-pdrdisc" *

    10ge2p1x520-eth-l2xcbase-testpmd-ndrpdrdisc.robot:| tc08-64B-2t2c-eth-l2xcbase-testpmd-pdrdisc
    10ge2p1x710-eth-l2xcbase-testpmd-ndrpdrdisc.robot:| tc08-64B-2t2c-eth-l2xcbase-testpmd-pdrdisc
    40ge2p1xl710-eth-l2xcbase-testpmd-ndrpdrdisc.robot:| tc08-64B-2t2c-eth-l2xcbase-testpmd-pdrdisc