On Wed, Aug 29, 2012 at 1:14 PM, Robby Findler <ro...@eecs.northwestern.edu> wrote: > On Wed, Aug 29, 2012 at 5:26 AM, Antonio Leitao <a...@gia.ist.utl.pt> wrote: >> On Tue, Aug 28, 2012 at 7:17 PM, Robby Findler >> <ro...@eecs.northwestern.edu> wrote: >>> Well, here's an example of it working. I don't know what to suggest >>> but to ask if you could make a small program that illustrates it not >>> working and maybe we can go from there to understand why you're seeing >>> what you're seeing. >>> >>> #lang racket >>> (require profile) >>> >>> (define h (make-hash)) >>> (profile >>> (let loop ([n 1000000]) >>> (unless (zero? n) >>> (hash-set! h n #t) >>> (hash-ref h n) >>> (loop (- n 1))))) >> >> This exact program, in DrRacket 5.3 (Windows 64 bits) >> only shows >> >> Welcome to DrRacket, version 5.3 [3m]. >> Language: racket; memory limit: 1024 MB. >> Profiling results >> ----------------- >> Total cpu time observed: 904ms (out of 905ms) >> Number of samples taken: 11 (once every 82ms) >> >> ==================================== >> Caller >> Idx Total Self Name+srcLocal% >> ms(pct) ms(pct) Callee >> ==================================== >>> >> >> Increasing the loop to 10000000 iterations shows: >> >> Welcome to DrRacket, version 5.3 [3m]. >> Language: racket; memory limit: 1024 MB. >> Profiling results >> ----------------- >> Total cpu time observed: 8464ms (out of 8549ms) >> Number of samples taken: 116 (once every 73ms) >> >> ==================================== >> Caller >> Idx Total Self Name+srcLocal% >> ms(pct) ms(pct) Callee >> ==================================== >>> >> >> Is this happening because I'm running the code in >> DrRacket? > > (I've re-added dev; hope that's okay.) > > No, that shouldn't be the cause. > > I'm forgetting now when this is triggered, but I recall that on some > platforms, or with some ways the installation is configured, stack > traces can be disabled (which would render the profiler useless, as > that's how it figures out what is going on). Probably this is what > you're seeing. > > FWIW, the version of Windows I use is Windows 7 and I see good output > using version 5.3, the latest nightly build, and a version I just > build myself (I checked the nightly and the release just to see if > there were different configuration options used.) > > I believe I'm using the 32 bit build in all those cases, tho. Are you > using the 64 bit one?
Yes. _________________________ Racket Developers list: http://lists.racket-lang.org/dev
