[Discuss-gnuradio] Expected behavior during underruns

[Patrik Eliardsson]

Dear list,

What is the expected behavior when we get underruns with the UHD and the flow 
control using the USRP2?

1) When we get underruns, does the usrp2 send some random samples until the 
host computer manage to feed the usrp2 and then starts to consume the 'old' 
samples from the host computer?

Or

2) When we get underruns, does the usrp2 send some random samples while 
throwing away old samples until the host computer manage to feed the usrp2 with 
samples to be sent in the future? 

Or does it work in another way?

Br,
Patrik