1 L2 Ethernet Interface Loop
2 ==========================
4 This section includes summary graphs of Testpmd Phy-to-Phy packet
5 latency with L2 Ethernet Interface Loop measured at 50% of discovered
6 NDR throughput rate. Latency is reported for Testpmd running in multiple
7 configurations of Testpmd pmd thread(s), a.k.a. Testpmd data plane
8 thread(s), and their physical CPU core(s) placement.
10 Testpmd packet latency - running in configuration of **one worker thread (1t) on one
11 physical core (1c)** - is presented in the figure below.
15 <iframe width="700" height="1000" frameborder="0" scrolling="no" src="../../_static/dpdk/64B-1t1c-l2-ndrdisc-lat50.html"></iframe>
17 *Figure 1. Testpmd 1thread 1core - packet latency for Phy-to-Phy L2 Ethernet Looping.*
19 CSIT test cases used to generate results presented above can be found in CSIT
20 git repository by filtering with specified regex as follows:
24 $ $CSIT/tests/dpdk/perf
25 $ grep -E "64B-1t1c-eth-l2xcbase-testpmd-ndrdisc" *
27 10ge2p1x520-eth-l2xcbase-testpmd-ndrpdrdisc.robot:| tc01-64B-1t1c-eth-l2xcbase-testpmd-ndrdisc
28 10ge2p1x710-eth-l2xcbase-testpmd-ndrpdrdisc.robot:| tc01-64B-1t1c-eth-l2xcbase-testpmd-ndrdisc
29 40ge2p1xl710-eth-l2xcbase-testpmd-ndrpdrdisc.robot:| tc01-64B-1t1c-eth-l2xcbase-testpmd-ndrdisc
31 Testpmd packet latency - running in configuration of **two worker threads (2t)
32 on two physical cores (2c)** - is presented in the figure below.
36 <iframe width="700" height="1000" frameborder="0" scrolling="no" src="../../_static/dpdk/64B-2t2c-l2-ndrdisc-lat50.html"></iframe>
38 *Figure 2. Testpmd 2thread 2core - packet latency for Phy-to-Phy L2 Ethernet Looping.*
40 CSIT test cases used to generate results presented above can be found in CSIT
41 git repository by filtering with specified regex as follows:
45 $ $CSIT/tests/dpdk/perf
46 $ grep -E "64B-2t2c-eth-l2xcbase-testpmd-ndrdisc" *
48 10ge2p1x520-eth-l2xcbase-testpmd-ndrpdrdisc.robot:| tc07-64B-2t2c-eth-l2xcbase-testpmd-ndrdisc
49 10ge2p1x710-eth-l2xcbase-testpmd-ndrpdrdisc.robot:| tc07-64B-2t2c-eth-l2xcbase-testpmd-ndrdisc
50 40ge2p1xl710-eth-l2xcbase-testpmd-ndrpdrdisc.robot:| tc07-64B-2t2c-eth-l2xcbase-testpmd-ndrdisc