So you say that it does/did not fork() at all? Have you investigated with a simple test script to see if forks happen, how many and under what conditions with what system messages? Can the OS limit the number of forks? Note that Windows does not have a native fork() and so Perl emulates that somehow. See perlfork for the caveats and warnings. (I am exclusively working with Linux so I can't help with anything else)

In reply to Re^3: Fork and creating a thread exits the process by bliako
in thread Fork and creating a thread exits the process by fluks

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