libmimalloc2.0 2.0.9+ds-2 (ppc64el binary) in ubuntu mantic

 This is a general purpose allocator with excellent performance characteristics.
 Initially developed by Daan Leijen for the run-time systems of the Koka and
 Lean languages.
 .
 It is a drop-in replacement for malloc and can be used in other programs
 without code changes.