linux核心引數最佳化１

net.ipv4.tcp_fin_timeout = 2
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_keepalive_time = 600
net.ipv4.ip_local_port_range = 4000     65000
net.ipv4.tcp_max_syn_backlog = 16834
net.ipv4.tcp_max_tw_buckets = 36000
net.ipv4.route.gc_timeout = 100
net.ipv4.tcp_syn_retries = 1
net.core.somaxconn = 16834
net.core.netdev_max_backlog = 16834
net.ipv4.tcp_max_orphans = 16834
#iptabels
#net.ipv4.ip_conntrack_max = 25000000
#net.ipv4.netfilter.ip_conntrack_max = 25000000
#net.ipv4.netfilter.ip_conntrack_tcp_timeout_established=180
#net.ipv4.netfilter.ip_conntrack_tcp_timeout_time_wait=120
#net.ipv4.netfilter.ip_conntrack_tcp_timeout_close_wait=60
#net.ipv4.netfilter.ip_conntrack_tcp_timeout_fin_wait=120