Native memory tracking

[glandais-eptica]

I've releases a NMT metrics binder on https://github.com/glandais-eptica/nmt-metrics

It might be great to include it in your project. Feel free to help yourself or ask for support.

[mweirauch]

Thanks for the heads-up!

I wouldn't include it in this project though. It can be used additionally when required, as NMT has its performance penalties itself and the query implementation as I see it relies on a JDK being present (jcmd).