Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267818AbTGMODP (ORCPT ); Sun, 13 Jul 2003 10:03:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267998AbTGMODP (ORCPT ); Sun, 13 Jul 2003 10:03:15 -0400 Received: from out001pub.verizon.net ([206.46.170.140]:44223 "EHLO out001.verizon.net") by vger.kernel.org with ESMTP id S267818AbTGMODN (ORCPT ); Sun, 13 Jul 2003 10:03:13 -0400 From: Gene Heskett Reply-To: gene.heskett@verizon.net To: "Riley Williams" , "David Ford" , "Ryan Underwood" Subject: Re: Forking shell bombs Date: Sun, 13 Jul 2003 10:17:56 -0400 User-Agent: KMail/1.5.1 Cc: References: In-Reply-To: Organization: None that appears to be detectable by casual observers MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200307131017.56814.gene.heskett@verizon.net> X-Authentication-Info: Submitted using SMTP AUTH at out001.verizon.net from [151.205.62.27] at Sun, 13 Jul 2003 09:17:58 -0500 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2601 Lines: 73 On Sunday 13 July 2003 05:10, Riley Williams wrote: >Hi all. > >It sounds like what is required is some way of basically saying >"Don't permit new processes to be created if CPU usage > 75%" >(where the 75% is configurable but less than 100%). > Which would immediately cause problems for anyone running setiathome. My cpu useage has been 100% for 5 years. >Best wishes from Riley. >--- > * Nothing as pretty as a smile, nothing as ugly as a frown. > > > -----Original Message----- > > From: linux-kernel-owner@vger.kernel.org > > [mailto:linux-kernel-owner@vger.kernel.org]On Behalf Of David > > Ford Sent: Wednesday, July 09, 2003 4:08 PM > > To: Ryan Underwood > > Cc: linux-kernel@vger.kernel.org > > Subject: Re: Forking shell bombs > > > > No such thing exists. I can have 10,000 processes doing nothing > > and have a load average of 0.00. I can have 100 processes each > > sucking cpu as fast as the electrons flow and have a dead box. > > > > Learn how to manage resource limits and you can tuck another > > feather into your fledgeling sysadmin hat ;) > > > > david > > > > Ryan Underwood wrote: > >> Hi, > >> > >> On Tue, Jul 08, 2003 at 04:43:18PM -0400, jhigdon wrote: > >>> Have you tried this on any 2.5.x kernels? Just curious to see > >>> what it does, I plan on giving it a go later. > >> > >> I haven't, but a previous poster indicated that they had > >> (2.5.74) with the same results. > >> > >> I wonder if we could find an upper limit on the number of > >> allowable processes that would leave the box in a workable > >> state? Unfortunately, I don't have a spare box to test such > >> things on at the moment. ;) > >> > >> Thanks, > >--- >Outgoing mail is certified Virus Free. >Checked by AVG anti-virus system (http://www.grisoft.com). >Version: 6.0.500 / Virus Database: 298 - Release Date: 10-Jul-2003 > >- >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/ -- Cheers, Gene AMD K6-III@500mhz 320M Athlon1600XP@1400mhz 512M 99.26% setiathome rank, not too shabby for a WV hillbilly Yahoo.com attornies please note, additions to this message by Gene Heskett are: Copyright 2003 by Maurice Eugene Heskett, all rights reserved. - 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/