On Mon, Nov 26, 2001 at 05:00:14PM -0500, Paul Mather wrote:
> The lance ethernet driver:
> 
> NetBSD 1.5Y (CHUMBY) #2: Wed Nov 21 11:44:53 EST 2001
>     paul@chumby:/usr/src/sys/arch/alpha/compile/CHUMBY
> DEC 3000 - M300LX, 125MHz, s/n
> 8192 byte page size, 1 processor.
> total memory = 112 MB
> [...]
> ioasic0 at tc0 slot 5 offset 0x0: slow mode
> le0 at ioasic0 offset 0xc0000: address 08:00:2b:3d:d7:b8
> le0: 32 receive buffers, 8 transmit buffers
> 
> => Does netstat -i show errors on the interface ?
> 
> No errors.
> 
> Name  Mtu   Network       Address              Ipkts Ierrs    Opkts
> Oerrs Colls
> le0   1500  <Link>        08:00:2b:3d:d7:b8  6075433     0  8829331
> 0  4521
> 
> 
> 
> Actually, I think I just solved the problem.  I noticed that one of the
> differences between my 1.5 DEC3000/300 and 1.4 DECstation 5000/240 is
> that net.inet.tcp.cwm is set to 1 on the former and 0 on the latter.
> When I set net.inet.tcp.cwm to 0 on the NetBSD 1.5 box, the problem went
> away.  When I set it to 1, FTP speeds went straight down to ~7 KB/sec
> when sending from the 1.5 machine to another subnet.
> 
> I guess net.inet.tcp.cwm defaults to 1 nowadays.

Can you send-pr this ? This is certainly not the intended behavior ...

--
Manuel Bouyer <bouyer@antioche.eu.org>
--