net.core.rmem_max=134217728
net.core.wmem_max=134217728 
net.core.netdev_max_backlog=250000
net.ipv4.tcp_rmem=4096 87380 67108864
net.ipv4.tcp_wmem=4096 65536 67108864
net.ipv4.tcp_congestion_control=htcp
net.ipv4.tcp_mtu_probing=1