Brendan, thanks for the feedback. It's really cool to hear comments like this from someone like you. We really respect your work in the field.

Good catch on topprocs_file, we'll have to find a better name for it.

In terms of overhead, we put a lot of effort in it and, as you pointed out, we're already extremely optimized. But we think we can do even better. For example, we don't have any kind of kernel-level filtering yet. Coming soon! :)