Try yourblock.set_max_noutput_items(1024/itemsize)
On 03/03/2018 09:57 PM, Firdavs Pulat wrote:
Hello everyone,
I have a B200mini device I'm communicating over USB to a pc which is
running the gnuradio software. The gnuradio does some processing (e.g.,
low-pass filtering, data type conversion, etc), and finally gets to the
UDP sink block where packets are generated and sent through Ethernet to
an external device. The issue I'm having is that, in the UDP block,
noutput_items*d_itemsize size is alot larger than the UDP payload size
(1024 bytes). So, UDP gets 4-6K worth of bytes and bursts it all out
really fast (I can see this behavior in Wireshark), then waits to buffer
up another 4-6K bytes, and sends it all out really fast. This process
then continues. Is there a way to smooth this out so that it's not
bursting bunch of packets all at once? Otherwise the external device
isn't able to keep up and it's leading to tons of dropped packets.
I tried setting the max output buffer in python but I get this warning
when I run: gr::log :WARN: flat_flowgraph - Block (endian_swap_impl0)
max output buffer set to 2048 instead of requested 512.
Any ideas on what I can do to change this behaviour?
Thanks!
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