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>
21 \graphicspath{{../_build/_static/dpdk/}}
22 \includegraphics[clip, trim=0cm 8cm 5cm 0cm, width=0.70\textwidth]{64B-1t1c-l2-ndrdisc-lat50}
23 \label{fig:64B-1t1c-l2-ndrdisc-lat50-dpdk}
26 *Figure 1. Testpmd 1thread 1core - packet latency for Phy-to-Phy L2 Ethernet Looping.*
28 CSIT test cases used to generate results presented above can be found in CSIT
29 git repository by filtering with specified regex as follows:
33 .. program-output:: cd ../../../../../ && set +x && cd tests/dpdk/perf && grep -P '64B-1t1c-eth-l2xcbase-testpmd-ndrdisc' *
41 $ grep -P '64B-1t1c-eth-l2xcbase-testpmd-ndrdisc' *
43 Testpmd packet latency - running in configuration of **two worker threads (2t)
44 on two physical cores (2c)** - is presented in the figure below.
48 <iframe width="700" height="1000" frameborder="0" scrolling="no" src="../../_static/dpdk/64B-2t2c-l2-ndrdisc-lat50.html"></iframe>
54 \graphicspath{{../_build/_static/dpdk/}}
55 \includegraphics[clip, trim=0cm 8cm 5cm 0cm, width=0.70\textwidth]{64B-2t2c-l2-ndrdisc-lat50}
56 \label{fig:64B-2t2c-l2-ndrdisc-lat50-dpdk}
59 *Figure 2. Testpmd 2thread 2core - packet latency for Phy-to-Phy L2 Ethernet Looping.*
61 CSIT test cases used to generate results presented above can be found in CSIT
62 git repository by filtering with specified regex as follows:
66 .. program-output:: cd ../../../../../ && set +x && cd tests/dpdk/perf && grep -P '64B-2t2c-eth-l2xcbase-testpmd-ndrdisc' *
74 $ grep -P '64B-2t2c-eth-l2xcbase-testpmd-ndrdisc' *