Re: [Cooker] "fork" and then "copy-on-write" can crash linux.

[pgeorges]

Anon Sricharoenchai a �crit :
> 
> I have tested the "fork" and so called "copy-on-write" operation by
> invoking the following command (as a normal user, not superuser).
> 
> perl -e '$| = 1; sub s1() { system("free -t | tail -1") } s1(); for ($i =
> 0; $i<10_000_000; $i++) { $a[$i] = 0 } s1(); if (\!fork()) { s1(); for ($i
> = 0; $i<scalar(@a); $i+=300) { $a[$i] = 0 } s1() } else { wait() }'
 
> How can I protect this crash ?

You may protect from 'out of memory' linux crash by setting limits on
memory/time for processes with the ulimit command (ugly turnaround).