How to know the throughput and end-to-end delay?

Hi all,

When I use a simulator, I can easily get the throughput, delay, and
packet loss rate. However, it seems there is no this kind of function in
GNU Radio with USRP. I am wondering how you guys can know the throughput
and delay. For example, if I run tunnel.py, is it possible for me to
know the throughput? I really appreciate your time and help.

Thank you,
Jane