vi /etc/sysctl.conf
kern.ipc.nmbclusters=200000
kern.ipc.nmbjumbop=100000
net.inet.ip.portrange.randomized=0
net.inet.tcp.fast_finwait2_recycle=1
kern.random.sys.harvest.ethernet=0
net.inet.tcp.inflight.enable=1
net.inet.tcp.drop_synfin=1
kern.maxvnodes=100000
kern.ipc.somaxconn=8192
kern.ipc.maxsockbuf=2097152
kern.maxfilesperproc=32768
kern.maxfiles=65536
net.inet.tcp.sendspace=65536
net.inet.tcp.recvspace=65536
net.inet.udp.maxdgram=57344
net.inet.icmp.drop_redirect=1
net.inet.icmp.log_redirect=0
net.inet.ip.redirect=1
net.inet6.ip6.redirect=1
net.inet.icmp.icmplim=100
net.inet.tcp.always_keepalive=1
net.inet.tcp.delayed_ack=1
net.inet.tcp.log_in_vain=0
net.inet.udp.log_in_vain=0
net.inet.tcp.blackhole=2
net.inet.udp.blackhole=1
net.local.stream.sendspace=65535
net.local.stream.recvspace=32768
