Some notes:

Often, it is a bad when two instance of a program run at the same time. So, when you run the script using "scheduled tasks", and this is a problem, check that the current instance is the only instance (which is another common problem).

Windows has no exec() system call, so that trick won't work on Windows. (Windows also lacks fork(). Another reason to stay away from Windows. ;-) Recent perl versions try to emulate both, but the emulation is far from being complete - simply because Windows has no equivalent of that API calls.)

exec $0 removes all command line arguments. Often, you don't want that. exec($0,@ARGV) keeps them.

In any case, exec() removes all context your program had, it literally starts from the beginning. If you need some state information, you have to keep it outside of the process, e.g. in a file or in an environment variable.

Alexander

--
Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)

In reply to Re^2: memory consumption by afoken
in thread memory consumption by moked

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