cvs commit: src/release/doc/en_US.ISO8859-1/installation/common install.sgml

[John Baldwin]

On Tuesday 01 March 2005 11:43 am, M. Warner Losh wrote:
> In message: <86acpnmzih.fsf at xps.des.no>
>
>             des at des.no (Dag-Erling Smørgrav) writes:
> : John Baldwin <jhb at FreeBSD.org> writes:
> : > How about a custom boot kernel?  When I suggested 12MB rather than
> : > 7MB in the original PR, I was thinking of the case of building a
> : > stripped-down custom kernel.  GENERIC certainly isn't going to fit
> : > well in 16MB.
> :
> : A custom kernel should work better.  I figured out that the "missing"
> : memory is in fact the memory used by the kernel, so a system with a
> : trimmed kernel should have a lot more memory available.  I'll run some
> : more tests...
>
> I've booted a stripped down (but not minimal) kernel with
> hw.physmem=10M to single user, but couldn't even get to multi-user
> with 16M:  Too many processes and too much swapping (I didn't trim my
> enabled list on my laptop).  If I booted a minimal kernel, and did
> some creative trimming, I think I can get down closer to 6M to 8M on a
> fairly small system (no acpi, etc), but it would be painful to run in
> that environemnt, unless you had special needs (eg, it was an embedded
> platform).

Then I think we should just say 24MB is the minimum required for both install 
and running given all the comments.  It will also simplify the docs if we 
just go with one number for minimum memory requirement.

-- 
John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org