It might be interesting to use Terra [0] in place of regular LuaJIT for the audio engine.

[0] http://terralang.org/

Looks interesting. Curious about how much of an issue you find GC latency and how you're handling it. I tried something vaguely similar and it caused me a few problems with larger compositions.

Reminds me of http://www.hermannseib.com/VstLua/index.html

This looks pretty awesome. It says it's fast, but I'm curious how it benchmarks compared to a C (non SSE) implementation.

Thanks. I did do a rudimentary benchmark with a filter bank implemented in C++ versus LuaJIT/protoplug.

Using VC++'s default compiler settings, the performance was exactly the same. However, enabling SSE while using floats instead of doubles is what made the difference. It renders the C version 1.5 - 2 times faster.

So yeah, a float version of LuaJIT would even things out completely, but I don't think that's coming anytime soon.

I think a version with vectorized doubles is more likely to happen.