From owner-freebsd-questions@FreeBSD.ORG  Fri Aug 17 20:17:12 2007
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id C84DD16A4DD
	for <freebsd-questions@freebsd.org>;
	Fri, 17 Aug 2007 20:17:12 +0000 (UTC)
	(envelope-from mksmith@adhost.com)
Received: from mail-in01.adhost.com (mail-in01.adhost.com [216.211.128.146])
	by mx1.freebsd.org (Postfix) with ESMTP id ADC1C13C48D
	for <freebsd-questions@freebsd.org>;
	Fri, 17 Aug 2007 20:17:12 +0000 (UTC)
	(envelope-from mksmith@adhost.com)
Received: from ad-exh01.adhost.lan (unknown [216.211.143.69])
	by mail-in01.adhost.com (Postfix) with ESMTP id 5C00B61C34;
	Fri, 17 Aug 2007 13:17:12 -0700 (PDT)
	(envelope-from mksmith@adhost.com)
Content-class: urn:content-classes:message
MIME-Version: 1.0
Content-Type: text/plain;
	charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
X-MimeOLE: Produced By Microsoft Exchange V6.5
Date: Fri, 17 Aug 2007 13:17:11 -0700
Message-ID: <17838240D9A5544AAA5FF95F8D52031602504E94@ad-exh01.adhost.lan>
In-Reply-To: <4B90A9A7-D8D6-49C5-B097-00094486EF4A@messier.com>
X-MS-Has-Attach: 
X-MS-TNEF-Correlator: 
Thread-Topic: performance hints (6.2)
Thread-Index: AcfhCt9SHpD5r7gKQ++I2NSOU13g7AAAKNwg
References: <4B90A9A7-D8D6-49C5-B097-00094486EF4A@messier.com>
From: "Michael K. Smith - Adhost" <mksmith@adhost.com>
To: "Mark Messier" <mark@messier.com>,
	"FreeBSD Mailing List" <freebsd-questions@freebsd.org>
Cc: 
Subject: RE: performance hints (6.2)
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
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, 17 Aug 2007 20:17:12 -0000

Hello Mark:

> -----Original Message-----
> From: owner-freebsd-questions@freebsd.org [mailto:owner-freebsd-
> questions@freebsd.org] On Behalf Of Mark Messier
> Sent: Friday, August 17, 2007 1:00 PM
> To: FreeBSD Mailing List
> Subject: performance hints (6.2)
>=20
> I've got a freebsd 6.2 system, dual 2Ghz 5130 cpu, 4g ram, with raid5
> Adaptec 2120s, running not much more than /usr/ports/mail/imap-uw
> and I'm having performance problems with only 20 IMAP users.
>=20
> I'm not swapping.. cpu is mostly idle, so I figure it must be I/O
> performance.  Just to confirm, is that what the following show?
>=20
> Thanks,
> -mark
>=20
It looks like your disks are getting pretty busy.  What does a gstat
look like over time?

Mike