I was reading perlsec and saw the following:

# Regular expressions - Perl's regular expression engine is so called NFA (Non-Finite Automaton), which among other things means that it can rather easily consume large amounts of both time and space if the regular expression may match in several ways. Careful crafting of the regular expressions can help but quite often there really isn't much one can do (the book "Mastering Regular Expressions" is required reading, see perlfaq2). Running out of space manifests itself by Perl running out of memory.

So this notes how running out of space manifests itself in Perl, but does not say how running out of time is manifested in Perl. I am sure that there are some monks that would like to help me answer this question.

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