we're trying to create too many mappings in the kernel address space.
one problem here is that the sun4c pmap treats all kernel pmap entries
as wired, so UBC mappings tie up a bunch of pmegs as unstealable even
though it would be perfectly fine to steal them.  that's probably the
biggest user of non-wired kernel mappings.

the UBC mappings can only consume 1/4 of the available pmegs on a sun4c
(though I remembered it as being 1/8, better double-check my math),
so there must be lot of other kernel mappings as well if you're running out.
you should check to see if we can cut back in other places too.

-Chuck


On Thu, Jun 13, 2002 at 09:28:00PM +0200, Manuel Bouyer wrote:
> Hi,
> I tried to install 1.6_BETA2 on a SS1+, but the install paniced while
> downloading the sets.
> The machine has 64M RAM. I booted from miniroot, and started an
> install using existing disklabel. Then I selected a ftp install from a local
> server. The installer was downloading base.tgz at more than 500KB/s when
> it paniced this way. It's perfectly reproductible for me (tried 2 times).
> The machine has 64M RAM.