From owner-freebsd-stable@FreeBSD.ORG  Tue Apr 11 01:46:37 2006
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
X-Original-To: freebsd-stable@freebsd.org
Delivered-To: freebsd-stable@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 8D78116A402
	for <freebsd-stable@freebsd.org>; Tue, 11 Apr 2006 01:46:37 +0000 (UTC)
	(envelope-from freebsd-stable@voidcaptain.com)
Received: from mx4.x15.net (mx4.x15.net [69.55.237.194])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 44DBB43D48
	for <freebsd-stable@freebsd.org>; Tue, 11 Apr 2006 01:46:37 +0000 (GMT)
	(envelope-from freebsd-stable@voidcaptain.com)
Received: from j1.x15.net [63.196.213.76] 
	by mx4.x15.net with ESMTP id 603050111X1FT7xY0004gUI7;
	Tue, 11 Apr 2006 01:46:24 +0000
Message-ID: <443B0A51.8040206@voidcaptain.com>
Date: Mon, 10 Apr 2006 18:45:53 -0700
From: Pete Slagle <freebsd-stable@voidcaptain.com>
MIME-Version: 1.0
To: doconnor@gsoft.com.au
References: <1dbad3150604100913hff9fc4dsb125ea541675f992@mail.gmail.com>	<20060410161713.GA48094@xor.obsecurity.org>
	<200604111048.09905.doconnor@gsoft.com.au>
In-Reply-To: <200604111048.09905.doconnor@gsoft.com.au>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: freebsd-stable@freebsd.org, michael.schuh@gmail.com, kris@obsecurity.org
Subject: Re: Maximum Swapsize
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Production branch of FreeBSD source code <freebsd-stable.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>, 
	<mailto:freebsd-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-stable>
List-Post: <mailto:freebsd-stable@freebsd.org>
List-Help: <mailto:freebsd-stable-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
	<mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 11 Apr 2006 01:46:37 -0000

Daniel O'Connor wrote:

> The old "swap size = 2x RAM" rule is no longer applicable unless you have a 
> very special application.

This "rule" always seemed counterintuitive to me anyway.

When you have very limited physical RAM you need a lot of swap space. 
When you have more than enough RAM you don't need any swap space at all. 
For a given set of applications, as RAM increases you need less swap 
space, not more. And vice versa.