I just wanted to clarify that this is how it is supposed to work and isn't a cause for alarm.
James Stauffer
-----Original Message-----
From: Spencer W. Thomas [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, September 10, 2003 11:36 AM
To: jdjlist
Subject: [jdjlist] RE: Memory growing alone
Indeed. I added an iteration counter, reduced the sleep time, and found
this behavior:
Iteration 652
total :1984
used :511
Iteration 653
total :1984
used :84
(I also changed the word "free:" to "used:" to reflect what it's
actually measuring.) This on WinXP with JRE 1.4.2, running under
Eclipse 2.1.1. Your mileage may vary.
=Spencer
James Stauffer wrote:
> This may be happening:
> Every time that it does through the loop it has to create some
> temporary objects to print out the info. Those objects probably won't
> be garbage collected until free memory is low.
>
>
> James Stauffer
>
> -----Original Message-----
> *From:* Sebastien RODRIGUES [mailto:[EMAIL PROTECTED]]
> *Sent:* Wednesday, September 10, 2003 10:50 AM
> *To:* James Stauffer
> *Subject:* Re: [jdjlist] RE: Memory growing alone
>
> import java.util.*;
>
> public class Main_1 implements Runnable
>
> {
>
> public Main_1 ()
>
> {
>
> }
>
> public static void main (String[] args)
>
> {
>
> new Main_1 ().teste ();
>
> }
>
> public void run ()
>
> {
>
> while(true)
>
> {
>
> try
>
> {
>
> this.t.sleep (2000);
>
> System.out.println ("total :"+Runtime.getRuntime ().totalMemory ()/1024);
>
> System.out.println ("free :"+(Runtime.getRuntime ().totalMemory
> ()-Runtime.getRuntime ().freeMemory ())/1024);
>
> }catch(Exception e){}
>
> }
>
> }
>
> private Thread t;
>
> public void teste ()
>
> {
>
> t = new Thread (this);
>
> t.start ();
>
> }
>
> }
>
> Using only this code the memory grow 1ko by 2seconds!
>
> Why?
>
>
>
> I'm surching from a free profiler!
>
>
> Message du 10/09/03 17:41
> De : James Stauffer
> A : jdjlist
> Copie � :
> Objet : [jdjlist] RE: Memory growing alone
>
>
>
>
>
>
>
>
> size=2>If the code if small you could post it.
>
>
> James Stauffer
>
>
>
> size=2>-----Original Message-----
> *From:* Greg Nudelman
> [mailto:[EMAIL PROTECTED]]
> *Sent:* Wednesday, September 10, 2003
> 10:27 AM
> *To:* jdjlist
> *Subject:* [jdjlist] RE: Memory growing
> alone
>
>
> class=966032015-10092003> Dear
> Sebastien,
> class=966032015-10092003>
> size=2>
> class=966032015-10092003> You're probably
> creating additional objects (in a loop?) with each re-fresh
> cycle. Make
> sure you allow the old objects to be garbage collected by
> assigning myOldObj =
> null; when you're done with them. It's harder then it sounds:
> these are
> hard bugs to track down. Look into Sun's java -verbose mode, it
> will tell
> you more about which objects are created. (see java -?) There are
> lots of
> good profilers out there for free so look into those
> also.
> class=966032015-10092003>
> size=2>
> class=966032015-10092003> Good
> luck,
> class=966032015-10092003>
> size=2>
> class=966032015-10092003>
> size=2>Greg
>
>
> align="left"> -----Original
> Message-----
> *From:* Sebastien RODRIGUES
> [mailto:[EMAIL PROTECTED]]
> *Sent:* Wednesday, September
> 10, 2003 8:00 AM
> *To:* jdjlist
> *Subject:* [jdjlist] Memory
> growing alone
>
>
> Hi,
>
>
> I have a big problem with my program!
>
>
> When i started the gui program and let it running alone
> showing only memory
> used!
>
>
> The memory used grow with 31 Ko more each second!
>
>
> How i can reduce this?
>
>
> On a perfect word the memry used should be the same if program
> don't work!
>
>
> Sorry i'm not on perfect word i'm on windows 2000!
>
>
> Any idea?
>
>
>
>
>
> Regards
>
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