From owner-freebsd-amd64@FreeBSD.ORG  Tue Jul 19 03:42:48 2005
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Date: Mon, 18 Jul 2005 20:42:47 -0700 (PDT)
From: Doug White <dwhite@gumbysoft.com>
To: Attila Nagy <bra@fsn.hu>
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Cc: amd64@freebsd.org
Subject: Re: DL145G2 cache memory
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On Fri, 15 Jul 2005, Attila Nagy wrote:

> Hello,
>
> On an HP DL145G2, I see something like the following at startup time
> (BIOS screens):
> Main memory: 4092 MB
> Cache memory: 1024 MB
>
> The machine has 4 GB RAM, and the dmesg tells me:
> real memory  = 5368709120 (5120 MB)
> avail memory = 4119322624 (3928 MB)
>
> Do you have any ideas what should be this?

Both are correct, it just depends on how you count it. The "real memory"
number from FreeBSD is apparently skipping over the PCI memory hole, which
is a Good Thing since that amount of memory is not being lost.

The CPU cache is not counted as part of main memory.

-- 
Doug White                    |  FreeBSD: The Power to Serve
dwhite@gumbysoft.com          |  www.FreeBSD.org