vim /etc/sysctl.conf
新增如下程式碼 後重新載入 sysctl -p

 net.ipv4.tcp_max_tw_buckets = 6000
net.ipv4.tcp_sack = 1
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_rmem = 4096 87380 4194304
net.ipv4.tcp_wmem = 4096 16384 4194304
net.core.wmem_default = 8388608
net.core.rmem_default = 8388608
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.core.netdev_max_backlog = 262144
net.core.somaxconn = 262144
net.ipv4.tcp_max_orphans = 3276800
net.ipv4.tcp_max_syn_backlog = 262144
net.ipv4.tcp_timestamps = 0
net.ipv4.tcp_synack_retries = 1
net.ipv4.tcp_syn_retries = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_mem = 94500000 915000000 927000000
net.ipv4.tcp_fin_timeout = 30
net.ipv4.tcp_keepalive_time = 30
net.ipv4.ip_local_port_range = 1024 65000
 

vim /etc/security/limits.conf
新增如下程式碼 新增後需要重啟 才能載入

* soft nofile 102400
* hard nofile 102400

http的模組 IfModule prefork.c

    StartServers       8
    MinSpareServers    5
    MaxSpareServers   40 #原始可改
    ServerLimit      2048 #可改
    MaxClients       2048#可改
    MaxRequestsPerChild  10000#可改

pgrep httpd |wc -l 統計httpd的程序數量

/etc/init.d/httpd configtest httpd的配置檢測
/usr/local/nginx/sbin/nginx -t -c /usr/local/nginx/conf/nginx.conf nginx的配置檢測（編譯安裝）