From owner-freebsd-questions@FreeBSD.ORG  Sat Feb 10 22:31:03 2007
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 [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id E5C5116A503
	for <freebsd-questions@freebsd.org>;
	Sat, 10 Feb 2007 22:31:03 +0000 (UTC)
	(envelope-from Cy.Schubert@komquats.com)
Received: from spqr.komquats.com (S0106002078125c0c.gv.shawcable.net
	[24.108.150.192])
	by mx1.freebsd.org (Postfix) with ESMTP id 8DE3413C46B
	for <freebsd-questions@freebsd.org>;
	Sat, 10 Feb 2007 22:31:03 +0000 (UTC)
	(envelope-from Cy.Schubert@komquats.com)
Received: from cwsys.cwsent.com (cwsys [10.1.1.1])
	by spqr.komquats.com (Postfix) with ESMTP id 74FF74C5C3
	for <freebsd-questions@freebsd.org>;
	Sat, 10 Feb 2007 14:31:20 -0800 (PST)
Received: from cwsys (localhost [127.0.0.1])
	by cwsys.cwsent.com (8.13.8/8.13.8) with ESMTP id l1AMVKNl007984
	for <freebsd-questions@freebsd.org>;
	Sat, 10 Feb 2007 14:31:20 -0800 (PST)
	(envelope-from Cy.Schubert@komquats.com)
Message-Id: <200702102231.l1AMVKNl007984@cwsys.cwsent.com>
X-Mailer: exmh version 2.7.2 01/07/2005 with nmh-1.2
From: Cy Schubert <Cy.Schubert@komquats.com>
X-os: FreeBSD
X-Sender: cy@cwsent.com
X-URL: http://www.komquats.com/
To: freebsd-questions@freebsd.org
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Date: Sat, 10 Feb 2007 14:31:20 -0800
Sender: Cy.Schubert@komquats.com
Subject: Tuning Question
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
Reply-To: Cy Schubert <Cy.Schubert@komquats.com>
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: Sat, 10 Feb 2007 22:31:04 -0000

I have a question about tuning FreeBSD systems, specifically in regard to 
memory. At one time on Solaris systems it was recommended to keep scan rate 
below 200 pages per second. (Today it's 300 pages per second, dependent on 
the amount of memory, class of system.) Are there any recommendations or 
rules of thumb a person can use to determine when a memory upgrade is 
required? My machines are only busy during port builds when the scan rate 
can vary greatly and the page out rate could reach as high as two pages per 
second during brief periods. What kind of memory and paging metrics should 
I use on FreeBSD systems?


-- 
Cheers,
Cy Schubert <Cy.Schubert@komquats.com>
FreeBSD UNIX:  <cy@FreeBSD.org>   Web:  http://www.FreeBSD.org

			e**(i*pi)+1=0