Mac OSX Network Stack Tweaks

Change those values in your /etc/sysctl.conf within root login on command line interface. Use sysctl -w kern.ipc.maxsockbuf=4194304kern.ipc.somaxconn=2048kern.ipc.nmbclusters=2048net.inet.tcp.rfc1323=1net.inet.tcp.win_scale_factor=4net.inet.tcp.sockthreshold=16net.inet.tcp.sendspace=1042560net.inet.tcp.recvspace=1042560net.inet.tcp.mssdflt=1448net.inet.tcp.msl=15000net.inet.tcp.always_keepalive=0net.inet.tcp.delayed_ack=3net.inet.tcp.slowstart_flightsize=20net.inet.tcp.blackhole=2net.inet.udp.blackhole=1net.inet.icmp.icmplim=50