Q: Does anyone have a write-up on how to measure performance of distributed Erlang/BEAM apps on linux? What tools are you using, what stats are the most relevant, what things are missing that you metric yourself, etc? Obviously there's a _mountain_ of tools and things to look at here... I've been looking into sysstat (https://github.com/sysstat/sysstat).
One of the first things I did when analyzing the algorithms in Part 1 was to start writing metrics to ETS...but then I discovered that Erlang already has tools like cover, cprof, fprof... In fact, it seems that whenever you are looking for something you need, it's actually there, somewhere.