sysctl.conf

vm.swappiness = 0
fs.file-max = 65535
net.ipv4.tcp_max_tw_buckets = 1024
net.ipv4.tcp_synack_retries = 2
net.ipv4.tcp_syn_retries = 2
net.ipv4.tcp_orphan_retries = 2
net.ipv4.tcp_max_syn_backlog = 1024
net.core.netdev_max_backlog = 1024
net.core.somaxconn = 65536
# Core socket buffer
net.core.rmem_max = 8388608
net.core.wmem_max = 8388608
net.core.rmem_default = 1048576
net.core.wmem_default = 1048576
# IPv4 default
net.ipv4.tcp_rmem = 1048576 2097152 8388608
net.ipv4.tcp_wmem = 1048576 2097152 8388608
# disable Slow-Start Restart
net.ipv4.tcp_slow_start_after_idle=0
# net.ipv4.tcp_no_metrics_save = 1
# kernel 3.6
# net.ipv4.tcp_fastopen = 3
net.ipv4.tcp_mtu_probing = 1
net.ipv4.tcp_fin_timeout = 3
# hybla illinois
net.ipv4.tcp_congestion_control = hybla