Mac OS X sysctl.conf gigabit speed performance tuning

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Original link: Network Tuning for gigabit speeds # don’t delay sending acks to syns net.inet.tcp.delayed_ack=0 # set buffer size for sockets kern.ipc.maxsockbuf=4194304 kern.ipc.somaxconn=512 kern.ipc.maxsockets=2048 kern.ipc.nmbclusters=2048 # increase the size of tcp & udp windows net.inet.tcp.rfc1323=1 net.inet.tcp.win_scale_factor=3 net.inet.tcp.sockthreshold=16 net.inet.tcp.sendspace=262144 net.inet.tcp.recvspace=262144 net.inet.udp.recvspace=74848 net.inet.tcp.mssdflt=1440 net.inet.udp.maxdgram=65535 net.inet.tcp.msl=15000 net.inet.tcp.always_keepalive=0 net.inet.tcp.slowstart_flightsize=4 net.inet.tcp.blackhole=2 net.inet.udp.blackhole=1 net.inet.icmp.icmplim=50