I think Amazon EC2 cannot be trusted for these benchmarks. On the physical hardware I tested node scales very linearly with the amount of cores added. On Ec2

I think Amazon EC2 cannot be trusted for these benchmarks. On the physical hardware I tested node scales very linearly with the amount of cores added. On Ec2 I have seen very strange results / bad performance. There is something seriously odd here, and I suspect it has to do with Amazons virtualization. On the box the author tested with, I would expect node (or nginx) to easily serve 50k req / sec. I'll have to do some more research to figure this out.