var start = new Date()
var hrstart = process.hrtime()
var simulateTime = 5
setTimeout(function(argument) {
// execution time simulated with setTimeout function
var end = new Date() - start,
hrend = process.hrtime(hrstart)
console.info('Execution time: %dms', end)
console.info('Execution time (hr): %ds %dms', hrend[0], hrend[1] / 1000000)
}, simulateTime)