This repository contains the code for the ePPing application that was used for the PAM 2023 paper "Efficient continuous latency monitoring with eBPF". For the most current build of ePPing please see xdp-project/bpf-examples instead. The code for ePPing is usually bundled with many other cool XDP applications, but for this repository I have removed them to keep it focused on ePPing.
Two different builds of ePPing were used for the experiments in the paper. The build in the main branch was used for the performance tests, whereas the build in the additional-output branch (adds TSecr and ACK number to each RTT report) was used for evaluating the RTT accuracy and showcasing the difference between matching TCP timestamps vs sequence and ACK numbers.
To build ePPing, run the following commands
git submodule update --init
CLANG=clang-14 LLC=llc-14 ./configure
cd pping
make
Note that for the experiments ePPing was built with LLVM-14 (clang-14 and llc-14). This build will fail to run if compiled with LLVM-15+, as the fix for working with LLVM-15+ was added later.
To run ePPing, run the following commands
cd pping
sudo ./pping -i <interface> [optional args]
To list the optional arguments, simply run sudo ./pping -h. A short
explanation of each argument can be found in pping/pping.c