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

[schlichtanders]

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

• Expose constrained memory limits and have the GC use them by maleadt · Pull Request #46796 · JuliaLang/julia · GitHub which makes Sys.total_memory() respect the docker memory
• added new command line option heap_size_hint for greedy GC by rssdev10 · Pull Request #45369 · JuliaLang/julia · GitHub which introduces --heap_size_hint commandline option

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

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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