Is your feature request related to a problem? Please describe.
Stock system allocator on most platforms is mediocre. Microsoft works on what is arguable the best general purpose allocator in existence at the moment in the form of mimalloc.

Describe the solution you'd like
Build and ship mimalloc with msjdk in place of system alloc. Benefits would be increase performance and lower memory usage. Also a nice synergy between microsoft tech.

Describe alternatives you've considered
Manually overriding the allocator via LD preload or page table modification.

Link
https://github.com/microsoft/mimalloc