A traffic generator built on BESS.
Like any other DPDK applications, you need to set up hugepages -- by default, BESS requires 2GB per CPU socket. Using 2MB hugepages is recommended since it can be configured without system reboot and the performance difference compared to 1GB ones is negligible.
Bind any NICs you want to generate traffic on to DPDK and take note of their PCIe addresses.
Finally, clone this repo and build BESS with the trafficgen plugins. See the BESS Wiki for notes about build dependencies.
$ git clone --recursive git@github.com:nefelinetworks/trafficgen.git
$ cd trafficgen
$ pip3 install -r requirements.txt
$ make
After setting things up, generating traffic is simple.
$ ./run.py
Type "help" for more information.
Starting BESS...
Done.
Spawning port monitor thread...
localhost:10514 $
To generate a simple stream of UDP packets on a single port (03:00.0 for example) and watch for return traffic, run:
localhost:10514 $ add port portA pci='03:00.0'
localhost:10514 $ start portA udp
localhost:10514 $ monitor port portA
Use the following commands to start, stop and monitor traffic:
monitor pipeline Monitor packet counters in the datapath pipeline
help List available commands
show config Show the current confiugration of all ports
show config PORT... Show the current confiugration of a port
reset Reset trafficgen
monitor port Monitor the current traffic of all ports
monitor port PORT... Monitor the current traffic of specified ports
set csv CSV Set the CSV file for stats output
start PORT MODE [TRAFFIC_SPEC...] Start sending packets on a port
stop PORT... Stop sending packets on a set of ports
add port PORT [PORT_ARGS...] Create a port with the given args
delete port PORT Create a port with the given args
See the advanced guide for how to generate different types of traffic.
To pretty-print a summary of trafficgen results, run summarize.py on the CSV output:
cd scripts
./summarize.py <CSV file>