Subject: Re: panic: mb_map too small
To: Darren Hosking <>
From: Chris G. Demetriou <>
List: netbsd-bugs
Date: 07/14/1994 17:48:20
> NetBSD current, i386 platform. 8Mb memory. I'm using the ethernet and
> ppp link extensively.

are you using them to bridge backets?  i.e. do you have 'options
GATEWAY' enabled?

> I keep getting the above panic and would like to know if it may be a bug
> or that I just need to increase the size of the data structure. I had a
> quick look at the code and the value of CLBYTES seems to be closely 
> related to the hardware so I'm cautious about changing it without
> some consultation.

It sounds like you're running out of mbuf space.  if you're not
running 'options GATEWAY', you might want to use:
	options	"NMBCLUSTERS=384"
else if you are running 'options GATEWAY', try:
	options "NMBCLUSTERS=768"

That'll bump up your mbuf space by 50%, in either case.