time_wait 过多　造成网络慢　实战

sh-3.2# scripts]# netstat -an|awk ‘/tcp/ {++S[$NF]}END {for (a in S) print a,S[a]}‘
TIME_WAIT 33
ESTABLISHED 70
LISTEN 13

sh-3.2# 5 scripts]# cat /etc/sysctl.conf|awk ‘/net.ipv4.tcp_syncookies|net.ipv4.tcp_tw_reuse|net.ipv4.tcp_tw_recycle|net.ipv4.tcp_fin_timeout/‘
net.ipv4.tcp_syncookies = 1

[root@Salt85 scripts]# cat /etc/sysctl.conf|awk ‘/net.ipv4.tcp_syncookies|net.ipv4.tcp_tw_reuse|net.ipv4.tcp_tw_recycle|net.ipv4.tcp_fin_timeout/‘
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_fin_timeout = 30

[root@Salt85 scripts]# netstat -an|awk ‘/tcp/ {++S[$NF]}END {for (a in S) print a,S[a]}‘
TIME_WAIT 1
ESTABLISHED 71
LISTEN 13