Profiling Class

This is a quick side note.

I have been tying to profile the class creation of PrototypeJS and Next!. Unfortanly i was not able to find a fair result, because i evaluated full prototype since everything depends on everything :S
I would be a hard trick to remove all uneed stuff.

So i tested by doing this( this is not real code, just graph )

Class Animal
  name
  constructor(name)
    this.name=name;
  say(message)
    alert(this.name + ": " + message);
  eat(food)
    this.say("Yum!");

Class Cat extends Animal
  constructor()
    super("cat");
  eat(food)
    if (food instanceof Mouse)
      super.eat();
    else if (food instanceof BadMouse)
      this.say("i dont like bad mouse");
    else
      this.say("Whatever you gaved me to eat, i dont like");

Class Lion extends Cat
  constructor()
    super("lion");
  say(message)
    super.say(message.toUpperCase());//big

Class Mouse extends Animal
  constructor()
    super("mouse")

Class BadMouse extends Mouse

var l= new Lion();

I picked this and created class with Next! and with PrototypeJS and used Firebug to profile and see how much function calls are done and how much time it taken

Next! ( Just class stuff ): Profile (0ms, 11 calls)
Prototype (full): Profile (31.25ms, 1091 calls)

Theres a Huge diference, but we must dont forget that most of this calls are from PrototypeJS base, its impossible to make a good comparission
But one thing i can say none of those 11 calls are iterating over objects to extend

In the end, PrototypeJS code looks a bit better and might be some char's smaller but overuses object extending stuf, and its slower to parse