TCP Tweaks

Windows TCP-Tweak:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters.
REG_DWORD, key "Tcp1323Opts", value 3
REG_DWORD, key "GlobalMaxTcpWindowSize", value e.g. 4000000, decimal


Linux TCP-Tweak:
/proc/sys/net/ipv4/tcp_rmem - memory reserved for TCP rcv buffers
/proc/sys/net/ipv4/tcp_wmem - memory reserved for TCP snd buffers

/proc/sys/net/core/rmem_max - maximum receive window
/proc/sys/net/core/wmem_max - maximum send window

Sources:
http://www.psc.edu/networking/projects
/tcptune/