Linux(Debian)VPS网络优化

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Yushum 2018年10月19日
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调整内核参数

vi /etc/sysctl.conf

添加以下内容

vm.swappiness = 10
fs.file-max = 51200
net.core.rmem_max = 67108864
net.core.wmem_max = 67108864
net.core.rmem_default = 65536
net.core.wmem_default = 65536
net.core.netdev_max_backlog = 4096
net.core.somaxconn = 4096
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_fin_timeout = 30
net.ipv4.tcp_keepalive_time = 1200
net.ipv4.ip_local_port_range = 10000 65000
net.ipv4.tcp_max_syn_backlog = 4096
net.ipv4.tcp_max_tw_buckets = 5000
net.ipv4.tcp_fastopen = 3
net.ipv4.tcp_mem = 25600 51200 102400
net.ipv4.tcp_rmem = 4096 87380 67108864
net.ipv4.tcp_wmem = 4096 65536 67108864
net.ipv4.tcp_mtu_probing = 1
net.ipv4.tcp_congestion_control=bbr
net.core.default_qdisc=fq

保存生效

sysctl -p

增加打开文件描述符的最大数量

vi /etc/security/limits.conf

添加这两行

* soft nofile 51200
* hard nofile 51200

修改 ulimit

vi /etc/profile

加上这一句

ulimit -SHn 51200