Please open a file named "my_program", and write three lines into it: 
#!/usr/bin/perl -w
print STDERR "$$\n";
`./my_program`;

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Now open bash and execute command: 
(ulimit -u150; ./my_program)

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Could you please tell why this program hangs quite _often_ (not always...)? How to make it _always_ fail when number of processes reaches 150...?
My system is: 
Debian GNU/Linux, 2.6.18-iplus #1 SMP Wed Dec 12 14:35:52 CET 2007 i68
+6 GNU/Linux
perl, v5.8.8 built for i486-linux-gnu-thread-multi

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My opinion is that perl waits for child to finish, but it didn't even start, and I don't see any solutions...

In reply to Ulimit makes program hang by memo2005

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