[Discuss-gnuradio] Losing data somewhere between USRP and hard drive

[Chris Stankevitz]

Hello,

Q1: If I use a file_sink to record data, and my app never reports "Ou" 
on the console, have all the bits been written to disk?

Q2: Does anyone have a suggestion about how I can avoid Ou messages when 
using file_sink?

Q1 commentary: Sometimes the data I get from file_sink looks funky.  It 
could be a problem with my implementation of my application, but I 
suspect the data is corrupted and I suspect it contains gaps eventhough 
no "Ou" was reported.

Q2 commentary: Ramdisk doesn't work because I'm writing gigabytes of 
data.  I am thinking maybe I could write a multithreaded file_sink that 
operates more cleverly than the currently implementation.  I am sampling 
4e6 complex short samples per second.  I have also tried sending the 
data over TCPIP using file_descriptor_sink attached to a python socket 
with setblocking(0).  Even when the receiving server is just throwing 
away the data (i.e. no disk access or processing) data is sometimes lost.

Thanks for your help and suggestions,

Chris