Maybe the prgPROCESS processes don't end and stay stuck without make room for other process?

Yes. You are creating zombie processes and not collecting them.

Adding: 

$SIG{CHLD} = 'IGNORE';

[download]

to the top of your program will likely make the problem go away.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
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In reply to Re: A daemon to tail a log and fork multiple external (perl) script by BrowserUk
in thread A daemon to tail a log and fork multiple external (perl) script by chrome

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