Measure kernel UDP socket queue drops
A question for QA: measure the number of packets dropped by kernel when the UDP socket queue is full.
On BSDs the value is given by "netstat -s" in the "dropped due to full socket buffers" count. I don't know for Linux...
Another way is to count received packets in the receiver loop (thread for ring).
I expect to get a low or zero number of kernel dropped packets with a receiver thread/ring.