From owner-freebsd-questions@FreeBSD.ORG Thu Jun 22 23:29:49 2006 Return-Path: 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 878B516A4DD for ; Thu, 22 Jun 2006 23:29:49 +0000 (UTC) (envelope-from dan@dan.emsphone.com) Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by mx1.FreeBSD.org (Postfix) with ESMTP id A43A64599B for ; Thu, 22 Jun 2006 22:25:10 +0000 (GMT) (envelope-from dan@dan.emsphone.com) Received: (from dan@localhost) by dan.emsphone.com (8.13.1/8.13.4) id k5MMPAww099715; Thu, 22 Jun 2006 17:25:10 -0500 (CDT) (envelope-from dan) Date: Thu, 22 Jun 2006 17:25:10 -0500 From: Dan Nelson To: Matt Ruzicka Message-ID: <20060622222509.GA95588@dan.emsphone.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-OS: FreeBSD 5.5-PRERELEASE X-message-flag: Outlook Error User-Agent: Mutt/1.5.11 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 22 Jun 2006 23:29:49 -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. -- Dan Nelson dnelson@allantgroup.com