From owner-freebsd-questions@FreeBSD.ORG  Fri Jun 23 00:48:49 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 23A2F16A481
	for <freebsd-questions@freebsd.org>;
	Fri, 23 Jun 2006 00:48:49 +0000 (UTC)
	(envelope-from hakmi@rogers.com)
Received: from smtp101.rog.mail.re2.yahoo.com (smtp101.rog.mail.re2.yahoo.com
	[206.190.36.79]) by mx1.FreeBSD.org (Postfix) with SMTP id 1AD49454CC
	for <freebsd-questions@freebsd.org>;
	Thu, 22 Jun 2006 23:42:46 +0000 (GMT)
	(envelope-from hakmi@rogers.com)
Received: (qmail 85807 invoked from network); 22 Jun 2006 23:42:46 -0000
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=rogers.com;
	h=Received:From:To:Cc:Subject:Date:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Mailer:In-Reply-To:X-MimeOLE:Thread-Index;
	b=TM2564H+e4lSIuPTqhVSDLtyqosFL0I44jqi6iZm+tgXesIThApZ/BeFQ56smznIHX5Y45BphF40Q29pc3A5KiLuC5aqGAI152bTYMifSwA+HcbOfJnQEL2u1zIXWuOZfwABpHvz4IXSiPad/hlht0aQWddMox5nJLT2SB7/DJU=
	; 
Received: from unknown (HELO tamouh) (hakmi@rogers.com@70.27.160.99 with login)
	by smtp101.rog.mail.re2.yahoo.com with SMTP; 22 Jun 2006 23:42:46 -0000
From: "Tamouh H." <hakmi@rogers.com>
To: "'Dan Nelson'" <dnelson@allantgroup.com>, "'Matt Ruzicka'" <matt@frii.com>
Date: Thu, 22 Jun 2006 19:42:56 -0400
MIME-Version: 1.0
Content-Type: text/plain;
	charset="us-ascii"
Content-Transfer-Encoding: 7bit
X-Mailer: Microsoft Office Outlook, Build 11.0.6353
In-Reply-To: <20060622222509.GA95588@dan.emsphone.com>
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2869
Thread-Index: AcaWVDzpBywiZPITSzWNX+elwelOGQAATmvA
Message-Id: <20060622234246.1AD49454CC@mx1.FreeBSD.org>
Cc: freebsd-questions@freebsd.org
Subject: RE: Tracking if disk is busy
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, 23 Jun 2006 00:48:49 -0000

 
> 
> In the last episode (Jun 22), Matt Ruzicka said:
> > We've got a couple servers that appear to have particularly 
> busy disks 
> > and I was trying to determine if there is a way to more easily poll 
> > this data for tracking.
> > 
> > I'm not sure if this is one of those can't see the forest for the 
> > trees issues or not, but the only means that I am familiar 
> with to see 
> > the percentage of time the disk is busy is to run 'systat 
> -vmstat'.  I 
> > was hoping for something more concise that I could run periodically 
> > and maybe even graph (realizing that watching this might 
> well distort 
> > the results).
> > 
> > It appears that iostat on Solaris gives this information, 
> but I can't 
> > seem to mimic this functionality with FreeBSD.
> 
> iostat on -current and 6-stable has a Solaris-style -x mode 
> with a percent-busy column.
> 
> -- 

Use : 

systat -vm 1    

that will give you all the info u need, you can also try:

systat -io 1 '%busy'