A simple node script profiler to give you an idea of how long your script takes, for "run once" kinds of things
$ npm install script-profiler --save
// load into your NodeJS script
var profiler = require('script-profiler');
// start the profiler
profiler.start();
// run your manual script
console.log('doing lots of stuff...');
// stop the profiler on completion
profiler.stop();