Example Testpmd Configuration

Intel® Ethernet Controller E810 Data Plane Development Kit (DPDK) 22.11/23.03

Configuration Guide

ID	Date	Version	Classification
764257	06/16/2023	22.11	Public

This section provides a more complex example of a testpmd command.

This command starts testpmd with the following EAL parameters:

-l 2-11: Run DPDK on cores 2 through 11.

-n 4: Use 4 memory channels.

-a 11:00.2: Probe PCI device at BDF number 11:00.2.

--file-prefix testpmd18000: Run DPDK under the specified prefix ‘testpmd18000’.

--socket-mem=1024: Pre-allocates 1024 megabytes on socket 0.

--proc-type=auto: Set the type of the process to auto.

And, the following testpmd parameters:

--nb-cores=4: Set the number of cores used by the application for forwarding to 4.

--rxq=4: Set the number of RX queues per port to 4.

--txq=4: Set the number of TX queues per port to 4.

-i: Start testpmd in interactive mode.

--forward-mode=mac: Set the packet forwarding mode to mac, which changes the source and destination addresses of the packets before forwarding them.

--eth-peer=0,68:05:ca:c1:c9:29: Set the MAC address of the peer port.

The following is the testpmd output from running the command:

./dpdk-testpmd -l 2-11 -n 4 -a 11:00.2 --file-prefix testpmd18000 --socket-mem=1024,0 --proc-type=auto -- --nb-cores=4 --rxq=4 --txq=4 -i --forward-mode=mac --eth-peer=0,68:05:ca:c1:c9:29 EAL: Detected 88 lcore(s) EAL: Detected 2 NUMA nodes EAL: Auto-detected process type: PRIMARY EAL: Multi-process socket /var/run/dpdk/testpmd18000/mp_socket EAL: Selected IOVA mode 'PA' EAL: Probing VFIO support... EAL: PCI device 0000:18:00.0 on NUMA socket 0 EAL: probe driver: 8086:1592 net_ice Interactive-mode selected Set mac packet forwarding mode testpmd: create a new mbuf pool <mbuf_pool_socket_0>: n=219456, size=2176, socket=0 testpmd: preferred mempool ops selected: ring_mp_mc Warning! port-topology=paired and odd forward ports number, the last port will pair with itself. Configuring Port 0 (socket 0) Port 0: 68:05:CA:A6:0A:B0 Checking link statuses... Done testpmd> start mac packet forwarding - ports=1 - cores=4 - streams=4 - NUMA support enabled, MP allocation mode: native Logical Core 3 (socket 0) forwards packets on 1 streams: RX P=0/Q=0 (socket 0) -> TX P=0/Q=0 (socket 0) peer=68:05:CA:A6:0B:1C Logical Core 4 (socket 0) forwards packets on 1 streams: RX P=0/Q=1 (socket 0) -> TX P=0/Q=1 (socket 0) peer=68:05:CA:A6:0B:1C Logical Core 5 (socket 0) forwards packets on 1 streams: RX P=0/Q=2 (socket 0) -> TX P=0/Q=2 (socket 0) peer=68:05:CA:A6:0B:1C Logical Core 6 (socket 0) forwards packets on 1 streams: RX P=0/Q=3 (socket 0) -> TX P=0/Q=3 (socket 0) peer=68:05:CA:A6:0B:1C mac packet forwarding packets/burst=32 nb forwarding cores=4 - nb forwarding ports=1 port 0: RX queue number: 4 Tx queue number: 4 Rx offloads=0x0 Tx offloads=0x10000 RX queue: 0 RX desc=1024 - RX free threshold=32 RX threshold registers: pthresh=8 hthresh=8 wthresh=0 RX Offloads=0x0 TX queue: 0 TX desc=1024 - TX free threshold=32 TX threshold registers: pthresh=32 hthresh=0 wthresh=0 TX offloads=0x10000 - TX RS bit threshold=32 testpmd> show port stats all ######################## NIC statistics for port 0 ######################## RX-packets: 322932478810 RX-missed: 558861443 RX-bytes: 18446743441590657960 RX-errors: 0 RX-nombuf: 0 TX-packets: 302564215177 TX-errors: 0 TX-bytes: 18446743108765253980 Throughput (since last show) Rx-pps: 35183210 Tx-pps: 32640093 ############################################################################ testpmd> stop Telling cores to stop... Waiting for lcores to finish... ------- Forward Stats for RX Port= 0/Queue= 0 -> TX Port= 0/Queue= 0 ------- RX-packets: 155985410964 TX-packets: 146417324571 TX-dropped: 9568086393 ------- Forward Stats for RX Port= 0/Queue= 1 -> TX Port= 0/Queue= 1 ------- RX-packets: 6224427006 TX-packets: 4972240065 TX-dropped: 1252186941 ------- Forward Stats for RX Port= 0/Queue= 2 -> TX Port= 0/Queue= 2 ------- RX-packets: 4981979331 TX-packets: 4973665526 TX-dropped: 8313805 ------- Forward Stats for RX Port= 0/Queue= 3 -> TX Port= 0/Queue= 3 ------- RX-packets: 155943833856 TX-packets: 146389491787 TX-dropped: 9554342069 ---------------------- Forward statistics for port 0 ---------------------- RX-packets: 323135651965 RX-dropped: 561082081 RX-total: 323696734046 TX-packets: 302752721949 TX-dropped: 20382929208 TX-total: 323135651157 ---------------------------------------------------------------------------- +++++++++++++++ Accumulated forward statistics for all ports+++++++++++++++ RX-packets: 323135651965 RX-dropped: 561082081 RX-total: 323696734046 TX-packets: 302752721949 TX-dropped: 20382929208 TX-total: 323135651157 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Done.