================
It's show up the status of the server such as cpu, mem and load average's usage per second, and provide you can check TPS(tranjaction per second)
NPM
npm install benchmark-server
GIT
git clone https://github.com/iamdenny/benchmark-server.git
The port number shouldn't be same as the other HTTP which is your web server. Because It utilize express.js. It can be conflict.
var BenchmarkServer = require('benchmark-server');
BenchmarkServer.listen(15030);