Hi !
Featured games (90)
games approved by the League of Dukes
Games in Showcase (710)
Games in Android Showcase (212)
games submitted by our members
Games in WIP (784)
games currently in development
News: Read the Java Gaming Resources, or peek at the official Java tutorials
    Home     Help   Search   Login   Register   
Pages: [1]
  ignore  |  Print  
  some fundamental questions about memory usage  (Read 1200 times)
0 Members and 1 Guest are viewing this topic.
Offline Serethos

Junior Devvie

Java games rock!

« Posted 2004-09-10 12:30:45 »

im only experimenting a little with j2me. therefore ive taken the nokia 7210 emulator, which has nicely a memory usage monitor tool integrated.

so i made a little experiment, just for getting a feeling in the memory management:
i just created a very basic midlet with a canvas, doing absolute nothing and watched the memory usage:

size : 215040
used :  21456
free : 193584

then i tried to compare this result to the same midlet expect adding a class-global int-var:

used : 21500

--> ??
shouldnt the default-value of the heap-used-value be only increased by the value of an int-var (4bytes) ?

another example with 2 int-vars:

int 2x
used : 21528  

--> Huh this tiime i expected to get the difference between the default-memory usage and the one with one int-var twice ... but it isnt...

what do i get wrong ?
Offline Matzon

JGO Knight

Medals: 19
Projects: 1

I'm gonna wring your pants!

« Reply #1 - Posted 2004-09-13 05:10:11 »

I don't think you can be *that* precise when measuring memory in a VM. The phone may or may not have released an object for garbage collection when measuring.

Offline shmoove

Junior Devvie


« Reply #2 - Posted 2004-09-13 05:37:27 »

Chances are it's just the classloader creating some garbage when loading your classes.

Pages: [1]
  ignore  |  Print  
You cannot reply to this message, because it is very, very old.

numerical (103 views)
2017-02-21 07:32:16

numerical (103 views)
2017-02-21 07:31:46

theagentd (206 views)
2017-02-18 13:42:33

theagentd (211 views)
2017-02-18 13:35:16

h.pernpeintner (1372 views)
2017-01-24 22:39:11

h.pernpeintner (1360 views)
2017-01-24 22:38:32

Galdo (1922 views)
2017-01-12 13:44:09

Archive (1997 views)
2017-01-02 05:31:41

0AndrewShepherd0 (2533 views)
2016-12-16 03:58:39

0AndrewShepherd0 (2316 views)
2016-12-15 21:50:57
List of Learning Resources
by elect
2016-09-09 09:47:55

List of Learning Resources
by elect
2016-09-08 09:47:20

List of Learning Resources
by elect
2016-09-08 09:46:51

List of Learning Resources
by elect
2016-09-08 09:46:27

List of Learning Resources
by elect
2016-09-08 09:45:41

List of Learning Resources
by elect
2016-09-08 08:39:20

List of Learning Resources
by elect
2016-09-08 08:38:19

Rendering resources
by Roquen
2016-08-08 05:55:21 is not responsible for the content posted by its members, including references to external websites, and other references that may or may not have a relation with our primarily gaming and game production oriented community. inquiries and complaints can be sent via email to the info‑account of the company managing the website of java‑
Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines | Managed by Enhanced Four Valid XHTML 1.0! Valid CSS!