In the case of long running daemons, I prefer to write that as:
exec $0, @ARGV if $loop && sleep ($time || 300);
Of course, that assumes you aren't collecting stats over multiple loops.
The advantage of using exec instead of a goto (or loop), is that if there's a memory leak somewhere (be it in your script, a module or library you use, or a in perl itself), it will accumulate with a loop, but not with an exec.
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