From owner-freebsd-questions@FreeBSD.ORG  Fri Mar  3 13:35:16 2006
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
X-Original-To: freebsd-questions@freebsd.org
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id B24F616A427
	for <freebsd-questions@freebsd.org>;
	Fri,  3 Mar 2006 13:35:16 +0000 (GMT)
	(envelope-from freebsd-questions-local@be-well.ilk.org)
Received: from mail8.sea5.speakeasy.net (mail8.sea5.speakeasy.net
	[69.17.117.10]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2D95343D45
	for <freebsd-questions@freebsd.org>;
	Fri,  3 Mar 2006 13:35:15 +0000 (GMT)
	(envelope-from freebsd-questions-local@be-well.ilk.org)
Received: (qmail 1041 invoked from network); 3 Mar 2006 13:35:15 -0000
Received: from dsl092-078-145.bos1.dsl.speakeasy.net (HELO be-well.ilk.org)
	([66.92.78.145])
	(envelope-sender <freebsd-questions-local@be-well.ilk.org>)
	by mail8.sea5.speakeasy.net (qmail-ldap-1.03) with SMTP
	for <freebsd-questions@freebsd.org>; 3 Mar 2006 13:35:15 -0000
Received: by be-well.ilk.org (Postfix, from userid 1147)
	id 4AB7828447; Fri,  3 Mar 2006 08:35:14 -0500 (EST)
Sender: lowell@be-well.ilk.org
To: "N. Ersen SISECI" <siseci@gmail.com>
References: <1141377091.2228.17.camel@siseci.gdg.gov.tr>
From: Lowell Gilbert <freebsd-questions-local@be-well.ilk.org>
Date: 03 Mar 2006 08:35:13 -0500
In-Reply-To: <1141377091.2228.17.camel@siseci.gdg.gov.tr>
Message-ID: <44bqwnr6r2.fsf@be-well.ilk.org>
Lines: 19
User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Cc: freebsd-questions@freebsd.org
Subject: Re: Calculating of total free memory
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
Reply-To: freebsd-questions@freebsd.org
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 03 Mar 2006 13:35:16 -0000

"N. Ersen SISECI" <siseci@gmail.com> writes:

> I want to know REAL free memory size in my system. What I want to know 
> that is the real free memory size is hw.physmem - Free memory (the one 
> that is shown at the output of top -b). Various tools such as the one in
> freecolor ports in ports tree says it is not like that. It seems that
> Free Memory 
> is ( hw.physmem - (Free + Inactv)  )
> 
> I am not sure which one is the right one.. Can someone tell me which one
> is 
> the right one? 

I don't think you have a clear definition of "free memory" in mind.  
According to the kernel definitions, the "free" value from top(1) is
the amount of free RAM.  "Inactive" memory holds usable data, but can
be cleared for new uses fairly easily.

What is your purpose in looking for this number?