How to profile xiu

We can use flamegraph to profile xiu binary, use the following command to generate svg file:

sudo flamegraph -o my_flamegraph.svg -- ./xiu -w

or if the executable is already running, you can provide the PID via -p (or --pid) flag:

sudo flamegraph -o my_flamegraph.svg --pid 1337

And then open the svg file in browser to see the flame graph.