2.11BSD kernel probs

From: Chuck Dickman <chd_1_at_nktelco.net>
Date: Wed May 8 17:33:10 2002

Doc wrote:
>
> On Wed, 8 May 2002, Raymond Moyers wrote:
> > Did the filesystem driver or disk driver end up outside of the resident
> > part of the kernel ?

In 2.11BSD the whole kernel is ALWAYS resident, no swapping here. It is
just not all mapped at any given time. The overlay system is pretty much
transparent to the kernel.
 
> No, that was the first thing I looked for. Actually, a couple of the
> overlays were too large, so I moved drivers _into_ the resident kernel.

Good idea from a performance standpoint, but not for the kernel to function
and again all the overlays, BASE, OV1, OV2, etc. are always in memory, just
not always mapped into the processor instruction space by a page register.

> Doc

Glad you got it working!

-chuck
Received on Wed May 08 2002 - 17:33:10 BST