[racket-users] Re: making games in racket

Juan Francisco Cantero Hurtado Mon, 28 Dec 2015 09:54:42 -0800

On 27/12/15 16:55, Taro Annual wrote:

2015年12月27日日曜日 11時39分10秒 UTC+9 Matthew Flatt:

At Sat, 26 Dec 2015 06:52:19 -0800 (PST), Taro Annual wrote:

2015年12月26日土曜日 21時54分52秒 UTC+9 Matthew Flatt:

Can you try a current snapshot to see whether it eliminates pauses?:


   http://pre.racket-lang.org/

[...]


Sorry, it doesn't work well. Try the follows:


Can you say more about your platform, how you're running the program,
and what the pause looks like?

On OS X 10.11 and Racket 6.3.0.10, I started the program with

  env PLTSTDERR="debug@GC error" racket pong.rkt

and I see output like

  ...
  GC: 0:MAJ @ 111,386K(+56,166K)[+7,508K]; free 31,113K(-47,429K) 145ms @ 1521
  GC: 0:mIn @ 113,400K(+73,411K)[+9,864K]; free 29,273K(-27,310K) 18ms @ 3536
  GC: 0:mIn @ 92,385K(+92,464K)[+9,756K]; free 8,216K(-8,216K) 4ms @ 4125
  GC: 0:mIn @ 92,433K(+92,416K)[+9,752K]; free 8,249K(-8,249K) 3ms @ 4705
  GC: 0:mIn @ 92,470K(+92,379K)[+9,752K]; free 8,267K(-8,267K) 4ms @ 5295
  GC: 0:mIn @ 92,447K(+92,402K)[+9,752K]; free 8,235K(-8,235K) 4ms @ 5898
  GC: 0:mIn @ 92,468K(+92,381K)[+9,752K]; free 8,231K(-8,231K) 4ms @ 6485
  GC: 0:mIn @ 92,517K(+92,331K)[+9,760K]; free 8,266K(-8,266K) 4ms @ 7050
  GC: 0:mIn @ 92,511K(+92,337K)[+9,760K]; free 8,237K(-8,237K) 3ms @ 7599
  GC: 0:mIn @ 92,559K(+92,290K)[+9,756K]; free 8,282K(-8,282K) 4ms @ 8181
  GC: 0:mIn @ 92,520K(+92,328K)[+9,756K]; free 8,225K(-8,225K) 3ms @ 8767
  GC: 0:mIn @ 92,521K(+92,328K)[+9,756K]; free 8,203K(-8,203K) 4ms @ 9355
  GC: 0:mIn @ 92,542K(+92,307K)[+9,752K]; free 8,211K(-8,211K) 3ms @ 9929
  GC: 0:mIn @ 92,659K(+92,190K)[+9,756K]; free 8,232K(-8,232K) 4ms @ 10501

where the "MAJ" is just before the game window shows. I'm not noticing
pauses interactively, either. I'm only running the game for under a
minute, though.

I see similar results when I run in DrRacket. The pauses tend to be
longer, but usually in the 6-10ms range -- and nothing close to
300-500ms after the forced GC before the game starts.


Thanks for your help,
Matthew


Umm, maybe there are some problems in my code.

FYI, I also see the pauses in the game when I move the lateral bars(with Racket 6.3 and git HEAD). I'm using Linux and the output of racketonly shows very small pauses.




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[racket-users] Re: making games in racket

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