From owner-freebsd-questions  Wed Jan 21 16:14:41 1998
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To: Dan Nelson <dnelson@emsphone.com>
cc: Costa Morris <costa@cortx.com>, questions@FreeBSD.ORG
Subject: Re: ram question 
In-reply-to: Your message of "Wed, 21 Jan 1998 11:53:38 CST."
             <19980121115338.12041@emsphone.com> 
From: David Greenman <dg@root.com>
Reply-To: dg@root.com
Date: Wed, 21 Jan 1998 16:16:50 -0800
Sender: owner-freebsd-questions@FreeBSD.ORG
Precedence: bulk

>In the last episode (Jan 21), Costa Morris said:
>> i have 128MB of ram installed in 2.2.5.   i reconfigured the kernel
>> for the extra ram.
>> 
>> ie.
>> options         "MAXMEM=(128*1024)"
>> 
>> when i run a top i get this:
>> Mem: 72M Active, 6440K Inact, 15M Wired, 20M Cache, 8345K Buf, 11M Free
>
>72+6+15+20+8+11 == 132, which is sorta close 128MB.  You can see
>exactly how much memory FreeBSD detected by running "sysctl hw".

   'buf' is already included in the 'wired' total, so don't add it in. This
would make the total about 124MB. The 4MB discrepency is due to the kernel
text+data+bss and a couple of other things not being included in the numbers.

-DG

David Greenman
Core-team/Principal Architect, The FreeBSD Project