[rvm-research] question about heap layout

Hi All,

I have a couple of questions about heap layout:

(1) Why is there an unused chunk at the bottom of the heap space for 64 bit systems?

(2) Is the start of the boot address space (and heap start) arbitrary? Similarly for heap end? How can these constants be changed.

Regarding (2), some of my apps can benefit from bigger heaps, but with current setting, a lot of the virtual heap space is unused.

Regards,
Shoaib
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