sysctl.conf

fs.file-max = 2097152
vm.swappiness = 1
vm.dirty_ratio = 60
vm.dirty_background_ratio = 2

net.ipv4.tcp_synack_retries = 2
net.ipv4.ip_local_port_range = 2000 65535
net.ipv4.tcp_rfc1337 = 1
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_fin_timeout = 15

net.ipv4.tcp_keepalive_time = 300
net.ipv4.tcp_keepalive_probes = 5
net.ipv4.tcp_keepalive_intvl = 15

net.core.rmem_default = 31457280
net.core.rmem_max = 33554432
net.core.wmem_default = 31457280
net.core.wmem_max = 33554432
net.core.somaxconn = 65535
net.core.netdev_max_backlog = 65536
net.core.optmem_max = 25165824

net.ipv4.tcp_mem = 786432 1048576 26777216
net.ipv4.udp_mem = 65536 131072 262144

net.ipv4.tcp_rmem = 8192 87380 33554432
net.ipv4.udp_rmem_min = 16384

net.ipv4.tcp_wmem = 8192 65536 33554432
net.ipv4.udp_wmem_min = 16384

net.ipv4.tcp_max_tw_buckets = 1440000

kernel.printk = 3 3 3 3