1
vi /etc/sysctl.d/99-custom.conf

1
vm.swappiness=10
2

3
fs.file-max = 51200
4

5
net.core.rmem_max = 67108864
6
net.core.wmem_max = 67108864
7
net.core.netdev_max_backlog = 250000
8
net.core.somaxconn = 4096
9
net.core.default_qdisc = fq
10

11
net.ipv4.tcp_syncookies = 1
12
net.ipv4.tcp_tw_reuse = 1
13
net.ipv4.tcp_tw_recycle = 0
14
net.ipv4.tcp_fin_timeout = 30
15
net.ipv4.tcp_keepalive_time = 1200
16
net.ipv4.ip_local_port_range = 10000 65000
17
net.ipv4.tcp_max_syn_backlog = 8192
18
net.ipv4.tcp_max_tw_buckets = 5000
19
net.ipv4.tcp_fastopen = 3
20
net.ipv4.tcp_mem = 25600 51200 102400
21
net.ipv4.tcp_rmem = 4096 87380 67108864
22
net.ipv4.tcp_wmem = 4096 65536 67108864
23
net.ipv4.tcp_mtu_probing = 1
24
net.ipv4.tcp_congestion_control = bbr

1
sysctl --system

1
vi /etc/security/limits.d/custom.conf

1
* soft nofile 51200
2
* hard nofile 51200
3

4
# for server running in root:
5
root soft nofile 51200
6
root hard nofile 51200

1
ulimit -n 51200