written on Monday, June 2, 2008
修改/etc/sysctl.conf， /sbin/sysctl -p立即生效
永久修改内核参数： echo "10" > /proc/sys/net/ipv4/tcp_fin_timeout
各种参数的意思：http://ipsysctl-tutorial.frozentux.net/ipsysctl-tutorial.html
还参考了：http://trac.lighttpd.net/trac/wiki/Docs%3APerformance#platform-specific-notes
net.ipv4.tcp_fin_timeout = 10 net.ipv4.tcp_keepalive_time = 300 net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_tw_recycle = 1 #tcp port range net.ipv4.ip_local_port_range = 4096 65000 #tcp send buffer. min, default , and max net.ipv4.tcp_wmem = 4096 65536 16777216 #tcp reservie buffer. #net.ipv4.tcp_rmem = 4096 65536 16777216