Re: Total memory vs. available memory

[Matthias Scheler <tron%zhadum.org.uk@localhost>]

On Mon, Feb 23, 2009 at 06:26:51PM +0100, Hubert Feyrer wrote:
> >Out of interest: where did the 166MB go that aren't available?
> >Is that some PC voodoo where some memor gets lost because of some
> >address space conflict? I can't believe that the kernel itself
> >uses 166MB.
> 
> The difference is whatever the kernel needs for its own bookkeeping.
> It's not specific to the amd64 or x86 port, but you can see a similar 
> difference on all NetBSD platforms.

I was aware of that of course. I just didn't realize how much memory is
necessary to managed 5GB in 4MB pages.

I remembered that difference to be a few MB. But that number was probably
for an system I had quite a while ago with considerably less memory.

        Kind regards

-- 
Matthias Scheler                                  http://zhadum.org.uk/