[bluGill]

now interoperability costs performance for all the serialize/deserialize operations and so the language is too slow to be practical.

[MaxBarraclough]

The bookkeeping overheads might be trivial though. If it boils down to a handful of instructions per call, that's probably not so bad, depending on context. If large buffers are being copied, that's a problem, but hopefully that can generally be avoided.

[sitzkrieg]

not an ada issue