Consumption of rtl_tcp too slow?

[ew]

By the looks of it I'd say the gnss-sdr source is the problem, does the 
count keep increasing or does it stop at a certain number?

The explanation for the latter would be that the Application connects, 
but does not read, rtl-tcp has no starting or stopping. As soon as a 
client connects it tries to pump out samples until the client 
disconnects, so buffers are going to pile up if there is a delay between 
connecting and reading and the count will stay the same if the 
application does not read the data faster than real time to empty the list.
If it keeps increasing the most probable explanation would be a sample 
rate mismatch or some other reason why the client does not read fast enough.

The "known to work" rates are just that - values that are known to work 
without any side effects, but most other rates should work, too.
Frequent tuning, gain adjustments, or other commands  might cause those 
commands to pile up, but neither of those would cause the dongle to 
produce more samples than anticipated unless your app accidentally sends 
out a command to set a higher sample rate...


- Hoernchen