2.4.2. IPv4 Routed-Forwarding

This section includes summary graphs of VPP Phy-to-Phy packet latency with IPv4 Routed-Forwarding measured at 50% of discovered NDR throughput rate. Latency is reported for VPP running in multiple configurations of VPP worker thread(s), a.k.a. VPP data plane thread(s), and their physical CPU core(s) placement.

VPP packet latency in 1t1c setup (1thread, 1core) is presented in the graph below.

Figure 1. VPP 1thread 1core - packet latency for Phy-to-Phy IPv4 Routed-Forwarding.

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

$ cd $CSIT/tests/perf
$ grep -P '64B-1t1c-ethip4-ip4(base|scale)[a-z0-9]*(?!-eth-[0-9]vhost).*-ndrdisc' *

10ge2p1x520-ethip4-ip4base-copwhtlistbase-ndrpdrdisc.robot:| tc01-64B-1t1c-ethip4-ip4base-copwhtlistbase-ndrdisc
10ge2p1x520-ethip4-ip4base-iacldstbase-ndrpdrdisc.robot:| tc01-64B-1t1c-ethip4-ip4base-iacldstbase-ndrdisc
10ge2p1x520-ethip4-ip4base-ipolicemarkbase-ndrpdrdisc.robot:| tc01-64B-1t1c-ethip4-ip4base-ipolicemarkbase-ndrdisc
10ge2p1x520-ethip4-ip4base-ndrpdrdisc.robot:| tc01-64B-1t1c-ethip4-ip4base-ndrdisc
10ge2p1x520-ethip4-ip4base-snat-ndrpdrdisc.robot:| tc01-64B-1t1c-ethip4-ip4base-snat-1u-1p-ndrdisc
10ge2p1x520-ethip4-ip4scale200k-ndrpdrdisc.robot:| tc01-64B-1t1c-ethip4-ip4scale200k-ndrdisc
10ge2p1x520-ethip4-ip4scale20k-ndrpdrdisc.robot:| tc01-64B-1t1c-ethip4-ip4scale20k-ndrdisc
10ge2p1x520-ethip4-ip4scale2m-ndrpdrdisc.robot:| tc01-64B-1t1c-ethip4-ip4scale2m-ndrdisc
10ge2p1x520-ethip4-ip4scale-snat-ndrpdrdisc.robot:| tc11-64B-1t1c-ethip4-ip4base-snat-4000u-15p-ndrdisc
40ge2p1xl710-ethip4-ip4base-ndrpdrdisc.robot:| tc01-64B-1t1c-ethip4-ip4base-ndrdisc

VPP packet latency in 2t2c setup (2thread, 2core) is presented in the graph below.

Figure 2. VPP 2threads 2cores - packet latency for Phy-to-Phy IPv4 Routed-Forwarding.

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

$ cd $CSIT/tests/perf
$ grep -P '64B-2t2c-ethip4-ip4(base|scale)[a-z0-9]*(?!-eth-[0-9]vhost).*-ndrdisc' *

10ge2p1x520-ethip4-ip4base-copwhtlistbase-ndrpdrdisc.robot:| tc07-64B-2t2c-ethip4-ip4base-copwhtlistbase-ndrdisc
10ge2p1x520-ethip4-ip4base-iacldstbase-ndrpdrdisc.robot:| tc07-64B-2t2c-ethip4-ip4base-iacldstbase-ndrdisc
10ge2p1x520-ethip4-ip4base-ipolicemarkbase-ndrpdrdisc.robot:| tc07-64B-2t2c-ethip4-ip4base-ipolicemarkbase-ndrdisc
10ge2p1x520-ethip4-ip4base-ndrpdrdisc.robot:| tc07-64B-2t2c-ethip4-ip4base-ndrdisc
10ge2p1x520-ethip4-ip4scale200k-ndrpdrdisc.robot:| tc07-64B-2t2c-ethip4-ip4scale200k-ndrdisc
10ge2p1x520-ethip4-ip4scale20k-ndrpdrdisc.robot:| tc07-64B-2t2c-ethip4-ip4scale20k-ndrdisc
10ge2p1x520-ethip4-ip4scale2m-ndrpdrdisc.robot:| tc07-64B-2t2c-ethip4-ip4scale2m-ndrdisc
40ge2p1xl710-ethip4-ip4base-ndrpdrdisc.robot:| tc07-64B-2t2c-ethip4-ip4base-ndrdisc