network is slow in one direction, fast in the other...

[Chapter11]

I have a W2KP machine and a FreeBSD machine on the same network (home) - 100M linksys switch. Both machines are at 100 full (and neither are 3com cards, so I don't believe 100F versus 100H is a problem)

I'm using ftp (W2KP as client, FreeBSD as server) to test network speed.

When I move data from the FreeBSD machine to the W2KP machine, it is fast, exactly what I would expect out of a 100M network.

When I move data from the Windows machine to the FreeBSD, it is painfully slow - I would almost swear that my old 2B+D ISDN line was faster.

I've done some basic tweaking around with tcp receive windows and MTU size on the W2KP machine, but I can't lick this slow send problem.

Can anyone point me in what would hopefully be the right direction?

Thanks.

 

[bcastner]

http://support.microsoft.com/default.aspx?scid=kb;EN-US;321098

http://support.microsoft.com/?id=321169

 

[Chapter11]

Thanks,

I tried the TcpDelAckTicks trick, but it has no appreciable effect. I also noted that both of those articles were related to SMB-based copying - I haven't gotten to that point yet: I'm doing FTP, so tuning SMB will have no effect. FTP is much rawer than SMB in how it uses the network, so I've been trying to look for solutions at a much lower level.

 

[bcastner]

http://www.lvllord.de/