/usr/share/doc/fio/examples/cpuio.fio is in fio 2.1.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7
[global] ioengine=cpuio time_based runtime=10 [burn50percent] cpuload=50