That's pretty meaningless. It all depends on how bloated your code is, not on the stack. I have production PAMP apps that process requests in 1-2ms. Most of the request roundtrip time tends to be network latency. It's pretty similar peformance wise to equivalent node code. Except that PAMP is naturally multi-core capable, while node is not. It's much easier to mess up node's performance (latency) by doing too much compute, compared to the PHP app, where the multi-process model will save you, to a point.