From owner-freebsd-hackers Thu Nov 16 3:40:49 2000 Delivered-To: freebsd-hackers@freebsd.org Received: from brutus.conectiva.com.br (brutus.conectiva.com.br [200.250.58.146]) by hub.freebsd.org (Postfix) with ESMTP id 4336B37B4C5 for ; Thu, 16 Nov 2000 03:40:45 -0800 (PST) Received: from localhost (riel@localhost) by brutus.conectiva.com.br (8.11.1/8.11.1) with ESMTP id eAGBeHK13134; Thu, 16 Nov 2000 09:40:22 -0200 X-Authentication-Warning: duckman.distro.conectiva: riel owned process doing -bs Date: Thu, 16 Nov 2000 09:40:17 -0200 (BRDT) From: Rik van Riel X-Sender: riel@duckman.distro.conectiva To: Terry Lambert Cc: void , hackers@FreeBSD.ORG Subject: Re: "iowait" CPU state In-Reply-To: <200011160828.BAA00995@usr02.primenet.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Thu, 16 Nov 2000, Terry Lambert wrote: > > > Modern bloat-ware really pisses me off; I built the bind > > > library the other day: the frigging thing was 4M, unstripped. > > > > How does this affect the (non?-)usefullness of the > > %iowait statistic? > > When you are waiting for I/O in a well written program, it > is because there's nothing left to do but wait, which would > make the statistic useless. If there's something else you > could do, and you're waiting, by definition the program is > not well written (well written programs don't waste time for > no good reason). Ummm, how about a situation where you have a steadily increasing work load (more customers?) and want to have decent statistics of your servers to determine exactly what parts to upgrade and/or if you need to put extra machines into service? I agree that *any* statistics become useless after some time in a completely static situation, but thruth is that the number of internet users is still increasing and the workload on servers is doing the same ;) regards, Rik -- "What you're running that piece of shit Gnome?!?!" -- Miguel de Icaza, UKUUG 2000 http://www.conectiva.com/ http://www.surriel.com/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message