What's the better way to get the Node.js app total time execution?

Question

I've made a Node.js app that makes exactly the same thing that another solution in C#. The both app get all the javascript files from a directory recursively and execute uglify-js command to minify the files.

My project has about 150 JavaScript files to minify and the C# approach takes about 22s to do all the stuff (using threads).

After reading Node.js documentation and books, I've decided to do the Node.js way. I've already did that but I can't do reporting total time Node.js do the stuff because its asynchronous approach...

(yeah, I know, I use threads in C# that was asynchronous too)

So, what's the better way to get the Node.js app total time execution?

I'm using Node.js v0.10.13 as as win32 environment.

Answer 1

At the very start of your script, use console.time('Some_Name_Here');, and then use console.timeEnd('Some_Name_Here'); wherever the script finishes its execution.

It's a quick, native functionality of Node.js, and prevents you from having to initialize a new Date object.

Here's some short documentation on the console.time() method: http://nodejs.org/api/stdio.html#stdio_console_time_label.

Answer 2

You could do the time start/end timing method.

At the beginning of your main script you grab the time.

var start = Date.now();

process.on("exit", function() {
  var end = Date.now();
  console.log("Time taken: %ds", (end - start)/1000);
});

// all you code...
// more code...