Thread-level memory usage metrics

[conanbee]

I have reviewed the existing exposed metrics and observed that no thread-level memory usage metrics are provided here. Our use case is to analyze which thread - the specific thread name - causes a process out of memory. Could you take a look at this issue and check if process-exporter can provide such kind of metrics? The type should be gauge.

[flixr]

This is not an issue with the exporter... Memory per thread does not make sense, as all threads in the same process share the memory (virtual address space).