There's an outer while(true){} loop - the write side just writes continuously. More generally though, sidenote 5 says that the code in the article itself is in

There's an outer while(true){} loop - the write side just writes continuously. More generally though, sidenote 5 says that the code in the article itself is incomplete and the real test code is available in the github repo: https://github.com/bitonic/pipes-speed-test https://github.com/bitonic/pipes-speed-test