The rmem_max Linux setting defines the size of the buffer that receives UDP packets. When traffic becomes too busy, packet loss starts occurring. I made a graph showing how packet loss increases ...
I change value tcp_max_syn_backlog in sysctl in my ubuntu server 10.04 for growing SYN_RECV queue. But isnt work (I flood this server by hping). But, when i change somaxconn (in documentation its ...