Neither Lua nor LuaJIT use a generational design, they're both tri-color incremental mark and sweep collectors without a separate nursery. There was a plan for

Neither Lua nor LuaJIT use a generational design, they're both tri-color incremental mark and sweep collectors without a separate nursery. There was a plan for a generational GC for LuaJIT [0] (not to mention a lot of other cool features and a very clever design) but it was never implemented (and at this point it probably never will be). [0] http://wiki.luajit.org/New-Garbage-Collector http://wiki.luajit.org/New-Garbage-Collector