From owner-freebsd-hackers@FreeBSD.ORG Tue Jan 30 17:19:17 2007 Return-Path: X-Original-To: freebsd-hackers@freebsd.org Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 6FA0A16A4C9 for ; Tue, 30 Jan 2007 17:19:17 +0000 (UTC) (envelope-from joerg@britannica.bec.de) Received: from britannica.bec.de (storm.stura.uni-rostock.de [139.30.252.72]) by mx1.freebsd.org (Postfix) with ESMTP id 3310113C481 for ; Tue, 30 Jan 2007 17:19:16 +0000 (UTC) (envelope-from joerg@britannica.bec.de) Received: by britannica.bec.de (Postfix, from userid 1000) id 1B0F148C8; Tue, 30 Jan 2007 18:19:02 +0100 (CET) Date: Tue, 30 Jan 2007 18:19:02 +0100 From: Joerg Sonnenberger To: freebsd-hackers@freebsd.org Message-ID: <20070130171902.GA4545@britannica.bec.de> Mail-Followup-To: freebsd-hackers@freebsd.org References: <200701301521.l0UFLYgE055509@lurza.secnetix.de> <20070130162350.126210@gmx.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070130162350.126210@gmx.net> User-Agent: Mutt/1.5.13 (2006-08-11) Subject: Re: top delay value X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 30 Jan 2007 17:19:17 -0000 On Tue, Jan 30, 2007 at 05:23:50PM +0100, Dr. Markus Waldeck wrote: > > Well, an unprivileged user can achieve the same effect by > > typing "while :; do :; done". There are a thousand ways > > to waste CPU time, and there is no way to prevent a user > > >from doing it. > > It is not the same effect. > > You describe fork bombing. No, this is just the shell equivalent of for (;;) ; in C. Aka a busy loop. Joerg