linux内核调优

net.core.rmem_max=16777216

net.core.wmem_max=16777216

net.ipv4.tcp_rmem = 4096 87380 174760

net.ipv4.tcp_wmem=4096 65536 174760

net.ipv4.tcp_fin_timeout = 10

net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_tw_reuse = 1

net.ipv4.tcp_timestamps = 0

net.ipv4.tcp_window_scaling = 0

net.ipv4.tcp_sack = 0

net.core.netdev_max_backlog = 30000

net.ipv4.tcp_no_metrics_save=1

net.core.somaxconn = 262144

net.ipv4.tcp_max_orphans = 262144

net.ipv4.tcp_max_syn_backlog = 819200

net.ipv4.tcp_synack_retries = 2

net.ipv4.tcp_syn_retries = 2

######DEFAULT 2h####
net.ipv4.tcp_keepalive_time=1200
net.ipv4.tcp_keepalive_intvl=30
net.ipv4.tcp_keepalive_probes=3
net.netfilter.nf_conntrack_max = 6553600
net.netfilter.nf_conntrack_tcp_timeout_established = 1200
net.ipv4.ip_local_port_range = 1024 65000
net.ipv4.tcp_max_tw_buckets = 20000
net.nf_conntrack_max = 6553600