Installed memory today, questions immediately
bonomi at mail.r-bonomi.com
Sun Nov 7 16:34:21 UTC 2010
> To: "FreeBSD Mailing List" <freebsd-questions at freebsd.org>
> Date: Thu, 04 Nov 2010 19:13:53 -0700
> From: "justin v" <vic at yeaguy.com>
> Subject: Installed memory today, questions immediately
> I installed 4GB or memory today. I rebooted and see this, the first line
> after the splash menu thing:
> 983040K of memory above 4GB ignored
> dmesg shows avail mem amount and I am concerned as well:
> real memory = 4294967296 (4096 MB)
> avail memory = 3139940352 (2994 MB)
> is a stick bad perhaps?
Looking at this a little more carefully, the memory itself is fine
The problem is _where_ it is being mapped into the address-space at.
The first line is the give-awy ".... above 4GB ignored."
At this point I'm *guessing*, but it looks like 'main memory' is gettnig
mapped into the address-space in 1gb chunks and there is "something"
(probably video memory) occuping space up to 0x?38000000 maybe a
128mb video card mapped in at a base 768mb
If there is a way to relocate where the (presumed video) memory is mapped,
say, down to a bae of 128mb, you could potentialy pick up 640 megs of
usable memory. giving 3-3/4 gig less a bit, instead of barely 3 gigs.
It's worth checking the video board manual and/or 'configuration' utility
for a tweak.
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