So, did we achieve everything we wanted to in 12 months? Inevitably the answer is yes and no. We did a lot more benchmarking than we expected; we’ve been able to make a lot of programs (particularly large programs) have more consistent performance; and we’ve got a fair way down the road of implementing a new GC. To whoever takes on further LuaJIT work – best of luck, and I look forward to seeing your results!

source: L