[jerf]

I've mentioned this before on HN as a way for a "newbie" to look like a superhero in a job very quickly; nice to hear a story of it actually working!

There is so much code in the world that nobody has even so much as glanced at a profile of, and any non-trivial, unprofiled code base is virtually guaranteed to have some kind of massive performance problem that is also almost trivial to fix like this.

Put this one in your toolbelt, folks. It's also so fast that you can easily try it without having to "schedule" it, and if I'm wrong and there aren't any easy profiling wins, hey, nobody has to know you even looked. Although in that case, you just learned something about the quality of the code base; if there aren't any profiling quick wins, that means someone else claimed them. As the codebase grows the probability of a quick win being available quickly goes to 1.