On Sun, 16 Feb 1997, Harry Raaymakers wrote:

> 
> Hi, 
> 
>    I just build a i386 NetBSD 1.2 system and I am expericening a 
> problem where the mbuf's blow out to a large number and stay there. 
> As a result, I loose network connectivity.
> 
>   This typically happens when the sendmail queue runs. 
> 
> I am using a 3Com 3c590 PCI ethernet card.
> 
> ifconfig'ing ep1 down and then up clears things up and the interface 
> is usable again for a little while.
> 
> I have tried setting MAXUSERS to 128 and build another kernel, checked
> out the socket.h SOMAXCONN which was big enough at 128 already.
> 
> I have seen reference to an 'options NMBCLUSTERS=2048' that I haven't
> tried and to a patch that fixes the transmit interupt on for for
> 3c59x/3c90. Are these relevant ? Would increasing the mbufs to a very
> large number help ?

The patch I found in the netbsd-bugs archive did the trick. 

No problems since.

harry

> 
> Anyone know of a fix ? Is this a known problem ? Is their a patch ?
> 
> Thanks
> Harry
> 
> 
>