I thought people might be interested in this post, by Luke Maurer.
It announce memtrace-viewer, which is a fancy new memory profiler for OCaml, based on the new support for statistical memory profiling, based on work by Jacques Henri-Jourdan and Stephen Dolan.
I mostly want to say: this is really good stuff. We’ve gotten a ton of benefit from it at Jane Street. People have found the tool to be easy to use, and they’ve been able to uncover and fix a wide variety of performance problems with it. So, try it out!
And it would be interesting for people to reply to this thread with any experience reports. I’d love to get a better sense of the utility people are deriving from our tools outside of Jane Street.