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Figure 28: The ‘dpdk-devbind-atom-latest.py -s’
Command
Use the ‘dpdk-devbind-atom-latest.py --help’ command to get more detailed usage.
Step 7
: Make a soft link to current folder as running binary pktgen-dpdk-wr-atom-latest
requires this link
# ln -sf /root/bin/Pktgen-atom-latest.lua `pwd`/Pktgen.lua
Step 8
: Start Pktgen program
# pktgen-dpdk-wr-atom-latest --master-lcore <ID> -c < COREMASK > -n <CHANNELS > -w <
PORT 1 PFA > -w < PORT 2 PFA > --socket-mem=<MEM SIZE> --file-prefix=dpdk_pktgen -- -P -
T -m <MATRIX >
Considering the command above is relatively complicate we use a dual Cpu sockets platform
as an example,
# pktgen-dpdk-wr-atom-latest --master-lcore 1 -c 00000003 -n 3 -w 01:00.0 -w 02:00.0 --
socket-mem=512 --file-prefix=dpdk_pktgen -- -P -T -m '[0].0,[0].1'
Parameters setting:
--master-lcore 1: The 2
th
logical CPU core (CPU ID 1) in NUMA node0 is selected for running
Pktgen master process
-c 0000003: CPU cores ID 0 is dedicated for Rx and Tx on Port 0 (port 1) respectively.
CPU cores ID 0 is dedicated for Rx and Tx on Port 1 (port 2) respectively.
Thus CPU core ID 1 is used by Pktgen master process.
-n 3: memory channels = 3
-w 01:00.0 -w 02:00.0: i.e. PFA of port 1 and port 2
--socket-mem=512: If the CPU cores using are in NUMA node0,the parameter should be “-
-socket-mem=512” ,else if the CPU cores using are in NUMA node1,
the parameter should be “--socket-mem=0,512”
-m ‘[0].0,[0].1’: The logical CPU core (ID 0) handles port 0 Rx & Tx
The logical CPU core (ID 0) handles port 1 Rx & Tx
If the program runs successfully, users shall end up with Pktgen CLI:
