Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751429AbWCJWCm (ORCPT ); Fri, 10 Mar 2006 17:02:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752006AbWCJWCm (ORCPT ); Fri, 10 Mar 2006 17:02:42 -0500 Received: from main.gmane.org ([80.91.229.2]:12782 "EHLO ciao.gmane.org") by vger.kernel.org with ESMTP id S1751429AbWCJWCl (ORCPT ); Fri, 10 Mar 2006 17:02:41 -0500 X-Injected-Via-Gmane: http://gmane.org/ To: linux-kernel@vger.kernel.org From: =?iso-8859-1?Q?M=E5ns_Rullg=E5rd?= Subject: Re: can I bring Linux down by running "renice -20 cpu_intensive_process"? Date: Fri, 10 Mar 2006 22:01:58 +0000 Message-ID: References: <441180DD.3020206@wpkg.org> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: 82.153.166.94 User-Agent: Gnus/5.1007 (Gnus v5.10.7) XEmacs/21.4.15 (linux) Cancel-Lock: sha1:t6YH8Yd+WwTSG9/Uu8q4onVXyas= Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 778 Lines: 15 Jan Engelhardt writes: >>Subject: can I bring Linux down by running "renice -20 >>cpu_intensive_process"? >> > Depends on what the cpu_intensive_process does. If it tries to allocate > lots of memory, maybe. If it's _just_ CPU (as in `perl -e '1 while 1'`), > you get a chance that you can input some commands on a terminal to kill it. > SCHED_FIFO'ing or SCHED_RR'ing such a process is sudden death of course. Sysrq+n changes all realtime tasks to normal priority. -- M?ns Rullg?rd mru@inprovide.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/