Graal Forums - GBench

Benchmarking!
If you have ever found yourself trying to make a script run faster, it can be a pain. GBench (a benchmarker) makes it less of a pain:

You create a function you want to benchmark
You join("utility_benchmark");
You call this.defaultMain({this.bench("someName", temp.yourFunctionHere)});

It will run 100 samples (basically a sample is enough of your function calls to take up at least 0.01 secs).

Then it will give you a histogram that shows each sample and how long it took.

And then it will give you something called a "Kernel Density Estimation". That is a statistics term for a pretty simple concept:
In our case, look at any point on the kernel density estimate, and that is your probability of your function taking that long.

Example!

PHP Code:


		
			
this.join("utility_benchmark");
//#CLIENTSIDE

// some example function you wrote
function fib(temp.n) {
  if (temp.n == 0) {
    return 0;
  }
  if (temp.n == 1) {
    return 1;
  }
  return fib(temp.n-1) + fib(temp.n-2);
}

// just in case
function onCreated() {
  this.maxlooplimit = 20000;
}


function onWeaponFired() {
  // this is what we will be testing
  temp.f = function () {
    return this.fib(18);
  };

  // let's go!
  this.defaultMain({
    this.bench("fib", temp.f)
  });
}

In your F2, you will get:

NPC Code:

benchmarking fib 

collecting 100 samples, 1 iterations each, in estimated 4.057331309 s

mean: 41.656855829 ms, lb: 41.109135379 ms, ub: 42.937021324 ms

And, then you will get your histogram and kernel density estimate (all times are in milliseconds):
http://forums.graalonline.com/forums...4&d=1268441055

The big hill on the kernel density estimate shows that most likely the function will take around 41.6 ms to run. The smaller hill near the end means there is a slight chance that the function will take 43 ms to run.

Known Bugs :(

On some computers, in v5, some samples take a negative amount of time to run. I have no clue why this would happen, since it just compares timevar2s.
In v6, division doesn't work nicely and can make the graph axis a bit hard to read.

The magic is attached!