當伺服器負載高於一定程度，會發現預設的系統環境設定效能會不敷使用，跟著小編一起開外掛，榨乾主機的硬體效能吧!
Set01.
sudo vi /etc/sysctl.conf
新增下列設定值
fs.file-max = 65536
kernel.core_uses_pid = 1
kernel.msgmax = 65536
kernel.msgmnb = 65536
kernel.shmall = 4294967296
kernel.shmmax = 68719476736
kernel.sysrq = 0
net.core.netdev_max_backlog = 262144
net.core.optmem_max = 25165824
net.core.rmem_default = 31457280
net.core.rmem_max = 67108864
net.core.somaxconn = 65535
net.core.wmem_default = 31457280
net.core.wmem_max = 16777216
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.all.accept_source_route = 0
net.ipv4.conf.all.log_martians = 1
net.ipv4.conf.all.rp_filter = 1
net.ipv4.conf.default.accept_source_route = 0
net.ipv4.conf.default.log_martians = 1
net.ipv4.conf.default.rp_filter = 1
net.ipv4.icmp_echo_ignore_all = 1
net.ipv4.icmp_echo_ignore_broadcasts = 1
net.ipv4.ip_forward = 0
net.ipv4.ip_local_port_range = 1024 65000
net.ipv4.tcp_fin_timeout = 30
net.ipv4.tcp_keepalive_intvl = 15
net.ipv4.tcp_keepalive_probes = 5
net.ipv4.tcp_keepalive_time = 300
net.ipv4.tcp_max_orphans = 3276800
net.ipv4.tcp_max_syn_backlog = 8192
net.ipv4.tcp_max_tw_buckets = 6000
net.ipv4.tcp_mem = 94500000 915000000 927000000
net.ipv4.tcp_orphan_retries = 3
net.ipv4.tcp_rmem = 4096 87380 4194304
net.ipv4.tcp_sack = 1
net.ipv4.tcp_syn_retries=2
net.ipv4.tcp_synack_retries = 1
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_timestamps = 0
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_wmem = 4096 16384 4194304
Set02.立即套用
sudo sysctl -p
注意事項：
透過該方法可以提升Linux主機的網路連線session處理能力，但也要關注一下主機是否承受的起，避免因為session過多而當機的狀況發生。