net.ipv4.tcp_timestamps = 1
net.ipv4.tcp_sack = 1
net.core.netdev_max_backlog = 1000
net.core.rmem_max = 131071
net.core.wmem_max = 131071
net.core.rmem_default = 126976
net.core.wmem_default = 126976
net.core.optmem_max = 20480
net.ipv4.tcp_rmem = 4096        87380   174760
net.ipv4.tcp_wmem = 4096        16384   131072
net.ipv4.tcp_mem = 196608       262144  393216