Linux TCP优化

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查看网络连接状态

netstat -n | awk '/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}'

直接上配置

vi /etc/sysctl.conf--------------start-------------# max open filesfs.file-max = 51200# max read buffernet.core.rmem_max = 67108864# max write buffernet.core.wmem_max = 67108864# default read buffernet.core.rmem_default = 65536# default write buffernet.core.wmem_default = 65536# max processor input queuenet.core.netdev_max_backlog = 4096# max backlognet.core.somaxconn = 4096# resist SYN flood attacksnet.ipv4.tcp_syncookies = 1# reuse timewait sockets when safenet.ipv4.tcp_tw_reuse = 1# turn off fast timewait sockets recyclingnet.ipv4.tcp_tw_recycle = 0# short FIN timeoutnet.ipv4.tcp_fin_timeout = 30# short keepalive timenet.ipv4.tcp_keepalive_time = 1200# outbound port rangenet.ipv4.ip_local_port_range = 10000 65000# max SYN backlognet.ipv4.tcp_max_syn_backlog = 4096# max timewait sockets held by system simultaneouslynet.ipv4.tcp_max_tw_buckets = 5000# turn on TCP Fast Open on both client and server sidenet.ipv4.tcp_fastopen = 3# TCP receive buffernet.ipv4.tcp_rmem = 4096 87380 67108864# TCP write buffernet.ipv4.tcp_wmem = 4096 65536 67108864# turn on path MTU discoverynet.ipv4.tcp_mtu_probing = 1# for high-latency networknet.ipv4.tcp_congestion_control = hybla# for low-latency network, use cubic instead# net.ipv4.tcp_congestion_control = cubic--------------end-------------sysctl -pvi /etc/security/limits.conf-------------start------------* soft nofile 51200* hard nofile 51200-------------end------------

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