[racket] profiling

There's also the (probably more useful) racket/profile library that
uses sampling.

Robby

On Thu, Nov 10, 2011 at 9:28 AM, Shriram Krishnamurthi <sk at cs.brown.edu> wrote:
> Here's a program:
>
> #lang racket
>
> (define (even? n)
>  (if (zero? n) true (odd? (sub1 n))))
>
> (define (odd? n)
>  (if (zero? n) false (even? (sub1 n))))
>
> Go to Language | Choose Language, click on Show Details, and at the
> top-right, select "Debugging and profiling".
>
> Now run the program and in the interactions window, run
>
>> (even? 25)
>
> Go to View | Show Profile.  At the bottom of your screen will be the
> profiling information, showing 13 calls each to even? and odd?.
>
> If you run
>
>> (even? 25)
>
> again in the interactions window, the profile doesn't appear to
> change.  But click on Update Profile (bottom-left) and it'll now show
> 26 calls each.
>
> From there, mess around!
>
> Shriram
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