NodeJS is single threaded, Java Servlet is multi-threaded: wrong NodeJS results?

[patoi]

In real, nodeJS apps run with cluster. Cluster helps NodeJS to utilize processor cores.
A Java servlet is typically multithreaded. That means, multiple requests to the same servlet will be executed at the same time.

More information: http://nodejs.org/api/cluster.html

I think, node will produce far better results after clustering.

[jameswyse]

I thought this too at first but it looks like both the nodejs and express benchmarks do actually use cluster, with a worker for each available core?

[patoi]

I've checked nodejs code. It seems to be fine and cluster works.

Other option: Ubuntu has an ulimit, default value (ulimit -n -> 1024) is very low, when you do performance test.

[TechEmpower]

Right now we set the ulimit to 4096, which seems to be sufficient in our testing.