The situation we're observing in New Relic is below. With blue being non-heap memory, orange - V8 heap used, red - V8 heap free.
As you see, non-heap memory is steadily growing until the app crashes with out of memory.
Chrome Node.js DevTools seem to help only with V8 heap memory, which doesn't seem to be causing the issue here.
What's Node.js non-heap memory? Does it include stack? What could be causing non-heap memory leaks? And how do we diagnose them?
