I'm not sure it's intrinsic to JIT. LuaJIT's footprint is no larger than the normal Lua VM last I looked. It has more to do with how you pack your data and how

I'm not sure it's intrinsic to JIT. LuaJIT's footprint is no larger than the normal Lua VM last I looked. It has more to do with how you pack your data and how much pressure you put on the GC (thus requiring more memory).