----- Original Message -----
From: "Marc Henry Galang" <[EMAIL PROTECTED]>
To: "Philippine Linux Users Group Mailing List" <[EMAIL PROTECTED]>
Sent: Thursday, November 13, 2003 6:59 AM
Subject: Re: {Spam?} [plug] killing linux> hmm... thats interesting, even in a cluster? Coz if im right, the > structure of the Cray with UNICOS/mx is somehow like a beowulf cluster, > One(or I think more than 1) Mother OS(es) controling and checking the > heartbeats of the child OSes, so if you will fork bomb one of the child > OS, yes it will eventually die but then the Mother OS will soon see that > its dead and it will reboot it. If you fork Bomb the Mother OS(which I > think is more than 1), they will just reboot theirselves again if they see > that one of their partners are dead, theirfore the whole system is not > interupted, although it would be annoying. Also, this large supercomputers > has I think tools to manage their resources automatically and efficiently. once a process has given an unlimited resources (eg. cpu, memory, disk), that process could easily abuse those resources and lead your OS into disastrous state... fork bomb is one of the technique to hang a system.... filling up all the disk space in a vital partition like / for example coulld hang the system too.... eating up all the memory space (like memory leak) using malloc() function could hang the system also.... that is why there is a ulimit() function to get and set a process limits... regarding to your cray cluster, if there is DDOS (distributed denial of service) you can also execute a distributed fork bomb attack :-> > > Just like Agent Smith, if you will. :) > > [OT] Just for fun, speaking of Agent smith, what if he forked himself too > much that the memory of the matrix run out of resources, what do you think > would happen to the matrix? maybe it would hang too, eh? or even crash... > :) depends on the chief architect of the matrix... how he will deal running out of resources? still the basic answer is use the resource limits... but i guess the chief architect might mislook the resource limits because at matrix reloaded (part II), the chief architect of matrix is using ssh version 1 eventhough that year is already AD2199 :-> fooler. -- Philippine Linux Users' Group (PLUG) Mailing List [EMAIL PROTECTED] (#PLUG @ irc.free.net.ph) Official Website: http://plug.linux.org.ph Searchable Archives: http://marc.free.net.ph . To leave, go to http://lists.q-linux.com/mailman/listinfo/plug . Are you a Linux newbie? To join the newbie list, go to http://lists.q-linux.com/mailman/listinfo/ph-linux-newbie
