DPDK with rr examples

This repository contains a few DPDK applications used in research for talk "Debugging DPDK applications using rr" at DPDK Userspace Summit 2020.

This repository contains the following applications:

• dpdk-eal - initialize EAL, wait for SIGINT, clean up;
• dpdk-rx-simple - initialize EAL, configure port, receives single packet bursts, wait for SIGINT, clean up;
• dpdk-rx-intr - initialize EAL, configure port, wait for RX interrupt and receive 32 packet burst, wait for SIGINT, clean up;

Applications were built and tested with:

• DPDK v20.08,
• libibverbs v31.0.

Inside each directory there are two scripts:

• run.sh - start the application,
• run-rr.sh - start the application under rr record:
  • requires that rr is in PATH.

On top of that for dpdk-rx-intr run scripts take one optional command line parameter:

# Hexdump each received packet
run.sh
# or
run-rr.sh

# Only log when lcore was woken up
run.sh -n
# or
run-rr.sh -n