increase socket buffer

socket buffer

# increase TCP max buffer size settable using setsockopt()
net.core.rmem_max=16777216 
net.core.wmem_max=16777216 

# increase Linux autotuning TCP buffer limit 
net.ipv4.tcp_rmem=4096 87380 16777216
net.ipv4.tcp_wmem=4096 65536 16777216

# increase the length of the processor input queue
net.core.netdev_max_backlog=30000

# recommended default congestion control is htcp
net.ipv4.tcp_congestion_control=htcp

# recommended for hosts with jumbo frames enabled
net.ipv4.tcp_mtu_probing=1