socket options = SO_BROADCAST SO_KEEPALIVE SO_RCVBUF=8192 SO_SNDBUF=8192 TCP_NODELAY IPTOS_LOWDELAY
It has been repeated "ad nauseam" that with modern kernels you shouldn't use "socket options" unless you know very well what you are doing and you have a very good reason for doing so.
Also, in my case I found that the following parameter had a big positive impact in performance:
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