From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1946051AbWGOOTW (ORCPT ); Sat, 15 Jul 2006 10:19:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1946052AbWGOOTW (ORCPT ); Sat, 15 Jul 2006 10:19:22 -0400 Received: from 142.163.233.220.exetel.com.au ([220.233.163.142]:8612 "EHLO idefix.homelinux.org") by vger.kernel.org with ESMTP id S1946051AbWGOOTV (ORCPT ); Sat, 15 Jul 2006 10:19:21 -0400 Subject: Re: Where is RLIMIT_RT_CPU? From: Jean-Marc Valin To: Lee Revell Cc: Esben Nielsen , linux-kernel@vger.kernel.org, Ingo Molnar In-Reply-To: <1152971896.16617.4.camel@mindpipe> References: <1152663825.27958.5.camel@localhost> <1152809039.8237.48.camel@mindpipe> <1152869952.6374.8.camel@idefix.homelinux.org> <1152919240.6374.38.camel@idefix.homelinux.org> <1152971896.16617.4.camel@mindpipe> Content-Type: text/plain Content-Transfer-Encoding: 7bit Organization: =?ISO-8859-1?Q?Universit=E9?= de Sherbrooke Date: Sun, 16 Jul 2006 00:19:18 +1000 Message-Id: <1152973159.6374.59.camel@idefix.homelinux.org> Mime-Version: 1.0 X-Mailer: Evolution 2.6.1 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > Non-root RT tasks are not "unprivileged" - they have a level of > privileges between a normal user and root. Really I think it's OK for > these tasks to consume 100% CPU, as the admin has explicitly allowed it. Sure, if the admin has allowed it, but I think it's also OK for desktop users to have access to rt scheduling by default, as long as their tasks are "well-behaved" (i.e. only use a few percent CPU). > The only problem is that Ubuntu shipped with this enabled for everyone. The problem is not the fact that it's enabled, but the fact that the amount of CPU allowed isn't restricted. Jean-Marc