How does `--heap_size_hint` relate to improvements for `Sys.total_memory()`?

Hi there,
I am looking to make Julia run smoothly on a kubernetes pod. There seem to be two things which somehow improve stability:

My question: does it make sense to set the heap_size_hint in addition when running on docker?

Also note that there is draft pullrequest with even stricter handling of memory management on docker and the like, however don’t know whether it is still worked on RFC: Avoid running out of memory by checking available memory before allocating by maleadt · Pull Request #46831 · JuliaLang/julia · GitHub