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  JVM memory usage for a small game?  (Read 1364 times)
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Offline 20thCenturyBoy

Senior Member


Medals: 3


So much to learn, so little time.


« Posted 2004-04-25 09:10:14 »

At http://grexengine.com/sections/externalgames/
there's a nice little example of accelerated 2D graphics. Nothing fancy, just a simple Space Invaders clone. No sound, no sprite animation. The thing is, when I run it, the memory usage on my WinXP machine increases by 145MB! I assume most of this is taken up by the JVM (I'm using JRE 1.4.2) as the game really is very simple with minimal graphics. My question is, is this the norm for simple Java apps and should we assume all users have 512MB RAM these days? Or am I missing something ?

20thCB

"I have never done unit testing and I don’t find it a very useful concept" - Jonathan Blow
Offline kevglass

JGO Kernel


Medals: 152
Projects: 23
Exp: 18 years


Coder, Trainee Pixel Artist, Game Reviewer


« Reply #1 - Posted 2004-04-25 10:42:27 »

If this is the tutorial SpaceInvaders 101 I'm afraid I can explain it Smiley

When I wrote the JNLP for the tutorial I just ripped a JNLP file from an old game. It has max-heap and min-heap system properties set to 128MB (since the game it came from loaded rather alot of data).

I've rectified this now and you should find the current version runs <20MB.

Good find! Cheers.

Kev

Offline 20thCenturyBoy

Senior Member


Medals: 3


So much to learn, so little time.


« Reply #2 - Posted 2004-04-25 11:00:52 »

Yay - that fixed it! Cheers Kev.

Phew, for a minute there I thought I was going to have to ditch Java and go back to C (please God no....)

20thCB

"I have never done unit testing and I don’t find it a very useful concept" - Jonathan Blow
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