Difficult (impossible?) to say without seeing your code. A typical cause of a hang might be waiting for a pipe to be closed by the writer or waiting on a signal.

You could try to use strace on the hanging process (strace -p pid) which could give you an idea.

we know this via logging mechanism
be careful, the log file might not be up-to-date if some records are waiting in a buffer. Check by switching off buffering if you can.

In reply to Re: perl process hangs after processing the last file. by cdarke
in thread perl process hangs after processing the last file. by avanta

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