[Discuss-gnuradio] Buffering samples from USRP

[Till Hackler]

Hi all,

I'm looking for something like a buffer block to include inside a C++ 
flowgraph.

I'm getting samples off an USRP N210 at ~17MSamps/sec, and they enter 
the flowgraph through an OsmoSDR source block. Unfortunately the 
downstream block (openLTE) cannot initially keep up with the data rate, 
and samples are lost inside the UDP kernel buffer.

Later, the downstream block changes into a "faster" state and I expect 
it to decrease the buffer fill level.

The docs (http://files.ettus.com/uhd_docs/manual/html/transport.html) 
suggest to increase the kernel buffer, but I was wondering if there 
would be a way to include a buffer inside the flowgraph?

I've come across gr::buffer, but it doesn't seem to be what I need 
(http://lists.gnu.org/archive/html/discuss-gnuradio/2011-09/msg00345.html)

Many thanks!
Till