node.js is single threaded and EC2 large instance has 4 CPUs. So to be fair you must either: a) bench on a single core processor (a small EC2 instance) b) con

node.js is single threaded and EC2 large instance has 4 CPUs. So to be fair you must either: a) bench on a single core processor (a small EC2 instance) b) configure node.js as a cluster with as many instances as processors.