From owner-freebsd-hackers Mon Nov 6 23:57:33 2000 Delivered-To: freebsd-hackers@freebsd.org Received: from femail8.sdc1.sfba.home.com (femail8.sdc1.sfba.home.com [24.0.95.88]) by hub.freebsd.org (Postfix) with ESMTP id 054DA37B4D7 for ; Mon, 6 Nov 2000 23:57:31 -0800 (PST) Received: from beastie.localdomain ([24.19.158.41]) by femail8.sdc1.sfba.home.com (InterMail vM.4.01.03.00 201-229-121) with ESMTP id <20001107075730.FLZF2160.femail8.sdc1.sfba.home.com@beastie.localdomain>; Mon, 6 Nov 2000 23:57:30 -0800 Received: (from brian@localhost) by beastie.localdomain (8.9.3/8.8.7) id AAA93675; Tue, 7 Nov 2000 00:00:22 -0800 (PST) (envelope-from brian) Date: Tue, 7 Nov 2000 00:00:22 -0800 From: "Brian O'Shea" To: void Cc: hackers@FreeBSD.ORG Subject: Re: "iowait" CPU state Message-ID: <20001107000022.M622@beastie.localdomain> Reply-To: boshea@ricochet.net Mail-Followup-To: void , hackers@FreeBSD.ORG References: <20001107054413.A1983@firedrake.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.4i In-Reply-To: <20001107054413.A1983@firedrake.org>; from void on Tue, Nov 07, 2000 at 05:44:13AM +0000 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Tue, Nov 07, 2000 at 05:44:13AM +0000, void wrote: > I've been using Solaris a lot lately, and I've noticed that in e.g. > top's output, it has a distinct CPU state called "iowait", which seems > to be a pretty good indicator of how I/O-bound a system is. Is there > any reason that FreeBSD doesn't have such a state? "iostat" also seems > a lot less informative than Sun's. What should I be using to measure > I/O utilization on FreeBSD? From the iostat(8) man page: SEE ALSO fstat(1), netstat(1), nfsstat(1), ps(1), systat(1), pstat(8), vmstat(8) What information are you looking for specifically? Have a look at systat(1). It presents the activity on your system nicely, breaking it down into several descriptive categories which are documented in the man page. Try this: $ systat -io Hope that helps, -brian -- Brian O'Shea boshea@ricochet.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message