[racket] deceptive perfomance for typed racket in integer division

On Tue, Dec 11, 2012 at 5:08 PM, daniel rupis
<danielrupistralizavez at yahoo.es> wrote:
> Pierpaolo Bernardi <olopierpa at ...> writes:

>> Remember to generate an executable, to obtain the maximum speed.


> Welcome to Racket v5.3.1.
>
>
> (define (test)
>   (time (displayln (total-primes 60999))))> > > >
>> (test)
> 6145
> cpu time: 39170 real time: 39156 gc time: 0
>
>  Using ubuntu 12.04 and racket

This looks like you are testing from inside DrRacket.  As I already
wrote you should generate an executable and measure that.

If you run the test from inside DrRacket, you are measuring DrRacket
overhead, which is far from negligible.

P.