4 This section provides a summary of Testpmd Phy-to-Phy L2 Ethernet looping
5 performance illustrating packet latency measured at 50% of discovered NDR
6 throughput rate. Latency is reported for Testpmd running in multiple
7 configurations of Testpmd worker thread(s), a.k.a. Testpmd data plane thread
8 (s), and their physical CPU core(s) placement.
10 *Title of each graph* is a regex (regular expression) matching all plotted
11 latency test cases, *X-axis labels* are indeces of csit-dpdk-perf-1704 jobs
12 that created result output files used as data sources for the graph,
13 *Y-axis labels* are measured packet Latency [uSec] values, and the *graph
14 legend* identifes the plotted test suites.
18 Data sources for reported test results: i) FD.io test executor jobs
19 `csit-dpdk-perf-1704-all <https://jenkins.fd.io/view/csit/job/csit-dpdk-perf-1704-all/>`_ ,
20 ii) archived FD.io jobs test result output files
21 `csit-dpdk-perf-1704-all#job-number <https://nexus.fd.io/link>`_.
23 Testpmd packet latency - running in configuration of **one worker thread (1t) on one
24 physical core (1c)** - is presented in the figure below.
28 <iframe width="700" height="1000" frameborder="0" scrolling="no" src="../../_static/testpmd/64B-1t1c-l2-ndrdisc-lat50.html"></iframe>
30 *Figure 1. Testpmd 1thread 1core - packet latency for Phy-to-Phy L2 Ethernet Looping.*
32 CSIT test cases used to generate results presented above can be found in CSIT
33 git repository by filtering with specified regex as follows:
38 $ grep -E "64B-1t1c-(eth|dot1q|dot1ad)-(l2xcbase|l2bdbasemaclrn)-ndrdisc" *
40 10ge2p1x520-eth-l2xcbase-ndrdisc.robot:| tc01-64B-1t1c-eth-l2xcbase-ndrdisc
42 Testpmd packet latency - running in configuration of **two worker threads (2t)
43 on two physical cores (2c)** - is presented in the figure below.
47 <iframe width="700" height="1000" frameborder="0" scrolling="no" src="../../_static/testpmd/64B-2t2c-l2-ndrdisc-lat50.html"></iframe>
49 *Figure 2. Testpmd 2thread 2core - packet latency for Phy-to-Phy L2 Ethernet Looping.*
51 CSIT test cases used to generate results presented above can be found in CSIT
52 git repository by filtering with specified regex as follows:
57 $ grep -E "64B-2t2c-(eth|dot1q|dot1ad)-(l2xcbase|l2bdbasemaclrn)-ndrdisc" *
59 10ge2p1x520-eth-l2xcbase-ndrdisc.robot:| tc07-64B-2t2c-eth-l2xcbase-ndrdisc