Microsoft has a profiler that operates somewhat similar to the Unity profile, but it digs in a bit deeper, well at least that seems to be the case for HoloLens. Much like the Unity profiler, this one allows you to drill down to specific function calls, but the level of detail that this profile can see is rather jaw dropping:
Here, we have the GPU threads for about a second of the profile:
This is what the CPU did in the same session:
This profiler lets you drill down into the specific classes that were in ...