Subject: Re: panic: kmem malloc: mb_map too small
To: None <>
From: Dave Burgess <>
List: tech-kern
Date: 10/25/1995 16:09:38
> On Sat, 21 Oct 1995 16:35:56 -0400 
>  "Michael K. Sanders" <> wrote:
> [ Sorry for the additional cross-post, but it seems to me that follow-ups
>   to this should take place on tech-kern. --thorpej ]
>  > 16MB RAM, 32MB swap... there wasn't anything particularly intensive going on 
>  > when I got the following panic:
>  > 
>  > mb_map full
>  > panic: kmem_malloc: mb_map too small
> This can happen if your system is dealing with alot of network traffic.  
> Add an option like:
> options		NMBCLUSTERS=1024
> to you kernel config file, and it will probably go away.  I definitely 
> had to do this on my hp380 which is the diskless boot server for my hp319 
> and MVME-147, plus my source tree server, etc.  In fact, I had to bump up 
> to 2048; the larger number provided by `options GATEWAY' (512 on the 
> hp300) just wasn't sufficient...

Whatever is decided, the question and answer appear in FAQ Section 5.

Dave Burgess  (The man of a thousand E-Mail addresses)
386bsd FAQ Maintainer / SysAdmin for the NetBSD system in my spare bedroom
"Just because something is stupid doesn't mean that there isn't someone
that wants to do it...."