[argus]

Is it me or is this not a really fair comparison since the erlang frameworks would be utilizing both cpu's while node and tornado wouldn't be?

In real life a load balancer in front of tornado or node would be a far better solution than going down the erlang road in production.. support and maintenance wise + more programmers out there knowing the language would win hands down IMO...

[evgen]

If you read the article closely you will notice that the Erlang VMs were started without SMP support enabled; everything was single-core. If you turned on Erlang SMP support then the comparison would be even more lop-sided than the example presented in the OP. In real life a hardware load balancer in front of a pool of Erlang servers would be even better :)