[Haskell-cafe] [reactive] A pong and integrate

[Limestraël]

I'm definitely not good at profiling...
But I have something:

   4,971,190,736 bytes allocated in the heap
   4,392,735,248 bytes copied during GC
      13,998,328 bytes maximum residency (573 sample(s))
       3,281,000 bytes maximum slop
              38 MB total memory in use (0 MB lost due to fragmentation)

  Generation 0:  6987 collections,     0 parallel,  3.18s,  3.01s elapsed
  Generation 1:   573 collections,     0 parallel,  1.74s,  1.90s elapsed

  INIT  time    0.00s  (  0.00s elapsed)
  MUT   time    6.60s  (  9.54s elapsed)
  GC    time    4.92s  (  4.91s elapsed)
  RP    time    0.00s  (  0.00s elapsed)
  PROF  time    0.02s  (  0.03s elapsed)
  EXIT  time    0.01s  (  0.01s elapsed)
  Total time   11.55s  ( 14.49s elapsed)

  *%GC time      42.6%*  (33.9% elapsed)

  Alloc rate    752,071,215 bytes per MUT second

  Productivity  57.2% of total user, 45.6% of total elapsed


COST CENTRE                    MODULE               %time %alloc

MAIN                           MAIN                  92.2   89.9
newPaddle                  Pong.Types             7.8    9.9


Apparently, the integral (which is in newPaddle) does not consumes lots of
memory and time. It's the main.

I don't see where I should add strict evaluation.


2010/5/15 Limestraël <limestrael at gmail.com>

> Okay,
> guess I'll have to bring out the chapter 25 of my Real World Haskell...
>
>
> 2010/5/15 Bulat Ziganshin <bulat.ziganshin at gmail.com>
>
> Hello Limestraėl,
>>
>> Saturday, May 15, 2010, 7:02:38 PM, you wrote:
>>
>> > But when I set my beat to tick every 60 times per second, the
>> > position is well updated, but I clearly see that the display
>> > dramatically slows down after a few seconds of execution. Too heavy rate
>> for integrate?
>>
>> it may be due to lot of uncollected garbage that is result of lazy
>> evaluation. profile program to check its GC times
>>
>>
>> --
>> Best regards,
>>  Bulat                            mailto:Bulat.Ziganshin at gmail.com
>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.haskell.org/pipermail/haskell-cafe/attachments/20100515/33154a97/attachment.html