Hi Graham,
For winsock applications you need also to set two more variables:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Afd\Parameters\DefaultR
eceiveWindow
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Afd\Parameters\DefaultS
endWindow
Both of type REG_DWORD.
I don't know if it applies to you, but NT4 SP5 has a math error in its tcp
stack that causes the retransmit timer to be incorrectly computed, leading
to unnecessary retransmissions. There is a new tcpip.sys file that fixes
that bug. If you need this file and also the MS bug report regarding this,
please let me know.
Regards,
Marcelo M. Reis
[email protected]
> ----- Mensagem original -----
> De: Graham Street [SMTP:[email protected]]
> Enviada em: Quinta-feira, 10 de Fevereiro de 2000 11:04
> Para: [email protected]
> Assunto: nt to nt tcpsat problems
>
> Hi all,
>
> We're trying to run windows file sharing protocols over a tcp sat link
> and getting miserable performance, even after setting TcpWindowSize to
> 65536. We can get about 100-250k max. We are trying to get at least
> one megabit out of it. Is this even possible? We can get 1-2 megabits
> ftping from a sun box over satellite...
>
> does anyone know of any clever (cheap) solutions (spoofing nacks?,
> translating
> to udp?)
>
> Thanks,
> Graham Street
> [email protected]
This archive was generated by hypermail 2b29 : Mon Feb 14 2000 - 16:15:00 EST