Hello,

I have several x310s equipped with TwinRxs, and I'm having an issue with 
consecutive receives using STREAM_MODE_NUM_SAMPS_AND_DONE.

To illustrate my issue, I will refer to the uhd examples provided on github. I 
have built the original "rx_samples_to_file" example and can run it with no 
problem. However, if I modify it by simply duplicating the "recv_to_file" call 
or put it inside of a fore loop, I get an overflow (D) on every consecutive.  I 
saw a previous post, "[USRP-users] Overflows when doing repeated captures with 
X300<http://lists.ettus.com/pipermail/usrp-users_lists.ettus.com/2017-March/024174.html>",
 in which the same problem was reported, but there was some ambiguity as to 
whether the poster was using continuous or num samps and done mode. I USE THE 
"NSAMPS" ARGUMENT AND NO "DURATION" OR "TIME" ARGUMENT.

After some investigating it seems like a single packet is being left in the 
buffer. Can this be fixed? Or at least in the meantime, is there a way to avoid 
the delay that is caused by the out of order packet D overflow?

Thanks in advanced!
Adrian


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