Hello,

I am having issues with high UDP traffic with (smallest)64 byte ethernet packets at rates of 5/10Mbps.
Netstat show high dropped UDP "dropped due to full socket buffers" count
I am unable to set UDP recv space ( sysctl -w ) above 65536 as it leads to network stack corruption and everything stops
 working. Are there other options to set UDP receive space size in QNX? 

# sysctl -a | grep udp
net.inet.udp.checksum = 1
net.inet.udp.sendspace = 9216
net.inet.udp.recvspace = 65536
net.inet.udp.do_loopback_cksum = 0


udp:
        1571877 datagrams received
        0 with incomplete header
        0 with bad data length field
        0 with bad checksum
        4 dropped due to no socket
        313 broadcast/multicast datagrams dropped due to no socket
        542557 dropped due to full socket buffers
        1029003 delivered
        8 PCB hash misses
        8 datagrams output