OCaml memory profiling with Memprof - TypeRex Utility

Question

My program uses all of available memory, so I wanted to check which functions and abstracts are spoiling my project. I decided to use Memprof, so I installed their compiler and compiled my code with command

ocamlfind ocamlopt -package xml-light unix.cmxa str.cmxa -c -g  NKJPxmlbasics.ml NKJP.mli NKJP.ml test.ml

and then run as suggested in tutorial

ocp-memprof --exec ./test

But there is error instead of result:

Error: no memory profiling information found. Possible causes: - the application was not compiled with memory profiling support; - the application exited before any major garbage collection was performed.

I even managed once to make it work but I have no idea how it happened http://memprof.typerex.org/users/97beffbaec332eb7b2a048b94f7a38cf/2015-12-15_17-33-50_ab17218e800fe0a68fc2cfa54c13bfa6_16194/index.html

Is there any way to use this tool properly in this situation? What am I missing?

Answer 1

ocamlfind ... -c ... does not generate any executable. So, the ./test that you are running was probably generated by a previous command, probably without the memprof switch.