Thanks - L~R

Indeed. Devel::DProf is good stuff. I was very happy with my results when using it and Benchmark to, erm, profile and benchmark my code.

As for Memoize, Limbic~Region's reply is correct. It won't really work for me in this case, because I willshould never have the case where my subroutine gets called twice with the same arguments (unless of course there's something wrong in my log and I get duplicate entries). Thanks for mentioning this though, I've been meaning to look at it for a good while now.

I just mentioned Memoize for the general case and the rest of our audience.

Regarding Memoize, maybe im weird but i've never found it to be particularly useful. I have never had a real (dev and toy, ok) circumstance where I can cache based on arguments alone, and splitting my function into subfuctions that can be so Memoized never seemed to me to be the right thing to do. I think caching properly requires some degree of thought and understanding of the overall process, which combined with the ease of establishing a cache in Perl I have never used Memoize in any production code.