Scripts to install and use DPDK packet generator.
- ./installDpdk.sh -- install dpdk to ./dpdkInstall/dpdk-stable-17.08.1 (with connectx4 drivers)
- ./installPktgen.sh -- install pkt generator to ./dpdkInstall/pktgen-3.4.9 (with 1 GB for pcap rx)
- ./runPktGen.sh -- start pktGen cli using 3 cores: 1 core to display the CPI, 1 core to send packets out of the first ethernet interface available to DPDK, and 1 core to recieve packets on that same interface.
note: pktGen needs a large terminal window to display properly.
Once pktGen initializes it will launch a large cli that displays a per-interface column. Look at the third row from the top ("link state") to determine if the link is up. It should say something like <UP-25000-FD> if the port is up.
A few important commands:
set <PORTNUM> rate <PCT>
- sets port to generate traffic at of its capacity in throughput.
- PCT can be a fraction.
- on a 25 Gb/s link,
set 0 rate .538579will be about 200K packets per second with 64B packets.
set <PORTNUM> burst <VAL>
- sets port to send packets in bursts of size . For evenly spaced packets, you want this to be 1.
start <PORTNUM>
- start generating traffic on
stop <PORTNUM>
- stop generating traffic on
quit
- exit dpdk-pktgen
See https://pktgen-dpdk.readthedocs.io/en/latest/commands.html#runtime-options-and-commands for commands to set all kinds of other options.
- ./runThroughput.sh -- run pktGen with a script to send packets out of port 1 and count packets on port 2 for 10 seconds.
- ./runPcapThroughput.sh -- run pktGen with a script to send packets from pcaps/iperfClient2Server.pcap out of port 1 and count packets on port 2 for 10 seconds. Pcap is loaded into memory and looped.
runThroughput.sh and runPcapThroughput.sh use luaScripts/throughput.lua.
Read the getting started guide for more information on how to use pktGen: http://pktgen-dpdk.readthedocs.io/en/latest/running.html
and more about command line options: http://pktgen-dpdk.readthedocs.io/en/latest/usage_pktgen.html