Memory leak with File Write.vi
Hi All,
I am trying to save a big data cluster, which includes images, into a data log file. The vis I use are: New File.vi, Write File.vi, Close File.vi.
The problem is Write File.vi has memory leak when the data cluster includes images .
Anyone sees similar case? Any solution?
Thanks.
Aiqiu
Aiqiu,
I am glad you found out about flattening your image to a string. I was about to post and say that you probably didn't want to save the IMAQ image reference to a file, because after you closed the image in memory, there wouldn't be anything for the IMAQ image reference to point to. You are correct to flatten the image to a string. Below is a link to a document which discusses doing this to communicate over datasocket, but the processes of flattening the image to a string is the same regardless of whether or not you are sending the image across a datasocket connection or saving to a file.
Transfering Images with DataSocket
As for the memory leak. I am pretty sure that if you passed all of the IMAQ Image references created in the "Image Init Buffer.vi" subVI and then closed each reference individually, that the memory leak would probably go away.
Lorne Hengst
Application Engineer
National Instruments
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I noticed there is solution for window 8
http://support.microsoft.com/kb/2885482
Is there any solution for window 8.1?
I really appreciate for any help.Hi,
I'm sorry for didn't hear anything about this issue. I'll try to connect the writer of this KB, hope we can find some suggestion. If there is any progress about this problem, I would come back.
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Peter
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
import java.beans.PropertyChangeListener;
import java.text.DecimalFormat;
import java.util.Timer;
import java.util.TimerTask;
import java.util.Vector;
import javax.swing.AbstractAction;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.JRadioButtonMenuItem;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.table.AbstractTableModel;
@SuppressWarnings("serial")
public class TriState extends JPanel {
private static final long K = 1024;
private static final long M = K * K;
private static final long G = M * K;
private static final long T = G * K;
protected static int ctr = 1;
private JButton btnShow = new JButton("Show Form");
private JLabel lblMem = new JLabel();
private static final DecimalFormat df = new DecimalFormat("#,##0.#");
protected Timer updateTimer = new Timer();
public TriState() {
this.setLayout(new GridLayout());
add(btnShow);
add(lblMem);
updateTimer.scheduleAtFixedRate(new UpdateTimerTask(), 1000, 1000);
btnShow.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
FrmReferrals fr = new FrmReferrals();
fr.setVisible(true);
class UpdateTimerTask extends TimerTask {
public void run() {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
dumpMemoryUsage();
protected void dumpMemoryUsage() {
System.gc();
Long t = Runtime.getRuntime().totalMemory();
long f = Runtime.getRuntime().freeMemory();
String st = convertToStringRepresentation(t);
String sf = convertToStringRepresentation(f);
String su = convertToStringRepresentation(t - f);
System.out.println("Total:" + st + "(" + t + ") Free:" + sf + "(" + f + ") Used:" + su + "(" + (t - f) + ")");
lblMem.setText(su + "/" + st);
public static String convertToStringRepresentation(final long value) {
final long[] dividers = new long[]{T, G, M, K, 1};
final String[] units = new String[]{"TB", "GB", "MB", "KB", "B"};
if (value < 1)
throw new IllegalArgumentException("Invalid file size: " + value);
String result = null;
for (int i = 0; i < dividers.length; i++) {
final long divider = dividers;
if (value >= divider) {
final double dr = divider > 1 ? (double) value / (double) divider : (double) value;
result = df.format(dr) + units[i];
break;
return result;
private static void createAndShowGUI() {
JFrame frame = new JFrame("SimpleTableDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Create and set up the content pane.
TriState newContentPane = new TriState();
newContentPane.setOpaque(true); // content panes must be opaque
frame.setContentPane(newContentPane);
// Display the window.
frame.pack();
frame.setVisible(true);
public static void main(String[] args) {
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
protected class PopupMenu extends JPopupMenu {
public PopupMenu() {
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System.out.println(e.getActionCommand());
item1.setActionCommand("Insert");
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@Override
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public FrmReferrals() {
super();
init();
protected void init() {
jbInit();
protected void closeIt() {
uninit();
// variables here
protected Dimension dimPreferred = new Dimension(1270, 995);
protected JTabbedPane tabbedPane = new JTabbedPane();
protected JTable tblReferrals = null;
protected PopupMenu popMenu = new PopupMenu();
protected void jbInit() {
setPreferredSize(dimPreferred);
setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
setTitle("Referrals");
JPanel pnl = new JPanel();
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pnl.setLayout(new BorderLayout());
pnl.add(tabbedPane, BorderLayout.CENTER);
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add(pnl);
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setLocationRelativeTo(null);
// init the table and model
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tblReferrals.setComponentPopupMenu(popMenu);
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addWindowListener(new WindowListener() {
@Override
public void windowActivated(WindowEvent e) {}
@Override
public void windowClosed(WindowEvent e) {}
@Override
public void windowClosing(WindowEvent e) {
closeIt();
@Override
public void windowDeactivated(WindowEvent e) {}
@Override
public void windowDeiconified(WindowEvent e) {}
@Override
public void windowIconified(WindowEvent e) {}
@Override
public void windowOpened(WindowEvent e) {}
protected Vector<DBO_Referrals> buildDummyVector() {
Vector<DBO_Referrals> vr = new Vector<DBO_Referrals>();
for (int x = 0; x < 5000; x++) {
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tblReferrals.setComponentPopupMenu(null);
for (Component c : popMenu.getComponents()) {
PropertyChangeListener[] pl = c.getPropertyChangeListeners();
for (PropertyChangeListener l : pl)
c.removePropertyChangeListener(l);
if (c instanceof JMenuItem) {
ActionListener [] al = ((JMenuItem)c).getActionListeners();
for (ActionListener l : al) {
((JMenuItem)c).removeActionListener(l);
popMenu = null;
protected class DBO_Referrals {
protected long id;
protected String Employee;
protected String Rep;
protected String Asst;
protected String Client;
protected String Dates;
protected String Status;
protected String Home;
public DBO_Referrals(long id) {
this.id = id;
Employee = "Employee" + id;
Rep = "Rep" + id;
Asst = "Asst" + id;
Client = "Client" + id;
Dates = "Dates" + id;
Status = "Status" + id;
Home = "Home" + id;
public long getId() {
return id;
public String getEmployee() {
return Employee;
public String getRep() {
return Rep;
public String getAsst() {
return Asst;
public String getClient() {
return Client;
public String getDates() {
return Dates;
public String getStatus() {
return Status;
public String getHome() {
return Home;
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case 0 :
return Long.class;
default :
return String.class;
@Override
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return sColumns.length;
@Override
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@Override
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case 0 :
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case 1 :
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case 3 :
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return a.getClient();
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case 8 :
return "+";
default :
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Looks like BasicPopupMenuUI doesn't remove a reference to the JRootPane immediately. As far as I can see it will be removed when another menu shows.
As a hackish workaround you can try this in you FrmReferrals#uninit():
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field.setAccessible(true);
field.set(listener, null);
} catch (Exception e) {
// ignored
break;
}Funnily enough though it isn't there when I reduce your code to a SSCCE:
import java.awt.*;
import javax.swing.*;
public class TestBasicPopupMenuUILeak extends JFrame {
public TestBasicPopupMenuUILeak() {
super("Not collected right away");
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
JFrame frame = new JFrame("Test");
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.getContentPane().add(
new JButton(new AbstractAction("Show frame") {
@Override
public void actionPerformed(ActionEvent e) {
EventQueue.invokeLater(new Runnable() {
public void run() {
JLabel label = new JLabel(
"Right click to show popup, then close this frame."
+ "The frame with not be GCed until another (popup) menu is shown.");
JPopupMenu popup = new JPopupMenu(
"Popup");
popup.add("Item");
label.setComponentPopupMenu(popup);
// named differently so you can find it
// easily in your favorite profiler
JFrame frame = new TestBasicPopupMenuUILeak();
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.getContentPane().add(label);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
} -
Memory leaks with Third party classes
Hello all,
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For example,
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In the process of reusing this object, I am getting memory leaks.
Any ideas regarding, how one has to deal this type of situations? What are the issues involved with this case? Are there any similar problems, which have been solved? are most welcome.
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Java Plug-in 1.6.0_07
Using JRE version 1.6.0_07 Java HotSpot(TM) Client VM
Windows XP - SP2
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Memory leak in IMAQ Write PNG File
Hi,
I have a labview program that I'm using to do Speckle Patter Interferometry - it takes an image, takes a second image after some time, then subtracts the original image from the first and saves the subtraction. The process reveals fringes on an object deformed on wavelength scales.
The problem currently is that the program seems to have a memory leak. When I run the program, the amount of memory being used (according to Windows Task Manager) just keeps going up and up then after about 20 minutes, it crashes with the error:
Error 1074396159
Not enough memory for required operation
The error is normally when the file tries to write the png file - though that is the part of the program that takes the most time so it could just be coincidence that it happens at this point in the loop.
I've tried using the labview profiler (output attached), but can't see a particular VI that is using an abhorrent amount of memory.
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Attachments:
ESPI.llb 556 KB
memory_profile.txt 237 KBHi Sam,
I'm glad to hear that you managed to fix the problem in your code. I have had a look at the code you posted and I have a few suggestions on how you can improve it.
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Kind Regards
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Okay, so the following code will not complete.
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84 10/26/2006 9:35:15 AM Error:
85 File handle for "W:\TR-2051-2100\TR-2060 - BAS Arctic PTC\Vnom\00-99\VnomCombined00-99\p1.TDM" file is invalid.
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87 File handle for "W:\TR-2051-2100\TR-2060 - BAS Arctic PTC\Vnom\00-99\VnomCombined00-99\p2.TDM" file is invalid.
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89 File handle for "W:\TR-2051-2100\TR-2060 - BAS Arctic PTC\Vnom\00-99\VnomCombined00-99\p3.TDM" file is invalid.
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Error in <GM315 Pa...sing.VBS> (Line: 185, Column: 5):
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see attachment for code.
Attachments:
ForLoopCode.txt 11 KBi am having a similar error randomly inserted in the log
25 10/1/2009 1:58:36 PM Error:
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and
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(Error no. 6)
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I first use mark() method before iterate throw values with
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CFStringRef keys[3];
CFTypeRef values[3];
int n=0;
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CFStringRef pathUrl = CFSTR("file:/path/to/a/big.pdf");
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if( n < maxPages ) sleep(5); //Wait 5 seconds
return 0;I was able to fix the memory leak using the following code:
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printf("Running memLeakTest...
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CFStringRef keys[10];
CFTypeRef values[10];
int n=0;
//keys[n] = kCGImageSourceCreateThumbnailFromImageIfAbsent;
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values[n++] = kCFBooleanTrue;
keys[n] = kCGImageSourceCreateThumbnailWithTransform;
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Hello Experts!
I have been experiencing an apparent memory leak within
Director 11 when
using cloneModelFromCastMember().
I was making the assumption that calling resetWorld() on a
w3D member
onBeginSprite() would garbage collect any models previously
cloned into that
when I previously ran the movie.
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Gobbles roughly
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upon calling
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A good way to replicate this is to use
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memory usage hike
up.
Anybody have any advice why this is happening? Do I need to
explicitly
delete all models cloned into a member on stopMovie????
Cheers
Richard SmithHi Zzzorro,
Thanks for the advice!
Why does cloning from external w3D members help? Does it
avoid the memory
leak? It never used to happen on Director 8.5 so it has to be
a new Version
10 / 11 bug right?
I need to import several weightmapped boned characters into a
3D member, and
due to export issues each character has to have it's own w3D
file.
So I have to perform cloning at runtime to build the world. I
also need to
clone these characters based on the level, so I can't use
just one single 3D
member for both these reasons.
Thanks for any further ideas.
Richard Smith
"zzzorro" <[email protected]> wrote in
message
news:gd4sn2$2l8$[email protected]..
> as a rule of thumb:
> whenever possible avoid cloneModelFromCastMember in the
first place.
> It is highly unrecommended and the intel engineers
always recommended to
> use
> loadFile() with an external w3d file, which is much
better than having the
> w3d
> file in the castlib and using cmfcm.
> each cmfm rebuilds the whole scene and takes a lot of
time the bigger the
> scene is.
> apart from glitches like leaks, which you found right
now and other
> things.
>
> I work very much with sw3d and I barely have more than
one shockwave3d
> member
> in any of my movies. in very rare cases I use 2 sw3d
members. Other than
> that I
> use one member where I build and load everything into
from external w3d
> files
> with loadFile(), which is much more appropriate. the
only downside is that
> I
> can't change the model name, but there are ways to deal
with it.
> -
Memory Leak with GotoAndStop()
I am trying to track down a solution to a memory leak within an embedded video. If I embed a video on the timeline and then run gotoAndStop or gotoAndPlay to a specific frame every time the frame changes it takes in more memory until it crashes at about 1.7GB however if I run a straight play() on the same clip the memory usage remains constant. I have also tried System.gc() as it is an AIR App and have tried unloadAndStop() with the embeded video being loaded into a Loader and neither can reclaim any memory.
I am looking for a a way to resolve the memory leak or another way to be able to rapidly jump to specific frames of video as far as I know this is not possible with external flvs.
Thanks
Davevideo is much like a .gif file. if you start at frame 0 and jump to frame 30 it needs to redraw what it does nt have in frame 30 which means tellign it to start at frame 30 is the same as telling it to get all information from when it last changed which might be frame 27 to complete the frame of what should display on frame 30.
this is why its slow to play backwards. and best to play an flv forward.
what i would suggest if you do not need video persay, would be to use png sequences. but if your videos are long then i suppose it would be a greater advantage to keep it compressed.
what is the quality as well of the video and its size and your frame rate?
You mention that you are creating a 3d view, how is that? do you use more than 1 swf ?
I still think this does not sound like a play head issue, since the video is already compiled. -
Hello,
I just found a memory leak in my code caused by the SystemTray, but I don't know if that is me that misused SystemTray (I add a trayIcon, then remove it, then add an another one, and so on). I know how to get around that problem, but I don't know the origin of it (my code, java bug ?). So I made the following code reproducing that leak. If someone can give me idea or advice :-)
class MyThread extends Thread {
ReferenceQueue<?> referenceQueue;
public MyThread(ReferenceQueue<?> referenceQueue) {
this.referenceQueue = referenceQueue;
@Override
public void run() {
System.out.println("Starting ...");
try {
while (true) {
referenceQueue.remove();
System.out.println("We release a TrayIcon");
} catch (InterruptedException ex) {
Logger.getLogger(MyThread.class.getName()).log(Level.SEVERE, null, ex);
class MyPopup extends PopupMenu {
static final int MAX = 1000000;
Integer []toto = new Integer[MAX];
public MyPopup() {
for(int i = 0; i < MAX; i++)
toto[i] = i;
public class Main {
public static void main(String[] args) {
PopupMenu popup;
ReferenceQueue referenceQueue = new ReferenceQueue();
Vector<WeakReference>weakReference = new Vector<WeakReference>();
MyThread myThread = new MyThread(referenceQueue);
myThread.start();
SystemTray tray = SystemTray.getSystemTray();
TrayIcon trayIcon;
File file = new File(<AN IMAGE HERE>);
Image image;
try {
image = ImageIO.read(file);
while(true) {
popup = new PopupMenu();
trayIcon = new TrayIcon(image, "Frame Title", popup);
tray.add(trayIcon);
tray.remove(trayIcon);
weakReference.add(new WeakReference(trayIcon, referenceQueue));
} catch (IOException ex) {
Logger.getLogger(MyJFrame.class.getName()).log(Level.SEVERE, null, ex);
} catch (AWTException e) {
Logger.getLogger(MyJFrame.class.getName()).log(Level.SEVERE, null, e);
}------------------------------------------- ADDED -----------------------------------
P.S. :
- the toto array in MyPopup is there in order to obtain quicker a OutOfMemory (OOM)
- you may change your java parameter by fixing the allowed memory size in order to have a OOM quicker (-Xms30m -Xmx30m)
- you must have an image in order to test this code (and set the path where <AN IMAGE HERE> is)
- if you remove the following lines there is no OOM :
tray.add(trayIcon);
tray.remove(trayIcon);
so it seems to me that TrayIcon is the origin of the OOM
- the weak reference is there in order to see when a trayIcon can be garbage collected
Edited by: lemmel on May 5, 2009 7:22 AM - added commentsSo I did the test and:
- you were right about the vector, but this one was added only for debugging purpose (find the OOM cause)
- your code sample get a OOM with my computer as well as mine (with the vector removed obviously); I made some alteration to your code see below
could you try changing your java memory settings (see below) ?
P.S. :
- I first tried with your code as it was, got the OOM, then decided to give some time to the garbage collector (and later to force a call to it) by adding the lines with the tag ADDED
import java.awt.*;
import java.awt.image.BufferedImage;
static class MyPopup extends PopupMenu {
public static void main(String[] args) throws Exception{
SystemTray tray = SystemTray.getSystemTray();
BufferedImage image = new BufferedImage(16, 16, BufferedImage.TYPE_INT_RGB);
int i = 0; //ADDED
while (true) {
PopupMenu popup = new MyPopup();
TrayIcon newTrayIcon = new TrayIcon(image, "Frame Title", popup);
tray.add(newTrayIcon);
tray.remove(newTrayIcon);
if((i%10)==0) { //ADDED
System.gc(); //ADDED
System.runFinalization(); //ADDED
Thread.sleep(100); //ADDED
} //ADDED
i ++; //ADDED
}I removed the array trick in the MyPopup class in order to be able to do at least one loop (see my settings below)
- my environnement :
---- debian testing, kernel 2.6.26-1-686, libc6 2.9-4
---- tried with both java 6.12 and 6.13 (1.6.0_13; Java HotSpot(TM) Client VM 11.3-b02), use Netbeans NetBeans IDE 6.5 (Build 200811100001)
---- put those flags: -Xms5m -Xmx5m -
Memory leak with Visa Close in loop
I read the other posts about the memory leak problems with Visa Close, but eliminating the Visa Close from VI causes problems with read & write (it seems to go out of sync). Any suggestions? Example attached.
Attachments:
MKS_651C_Serial_Communication.vi 144 KBSolved the problem. I had to change the bit count and adjust sort. Removing the Visa Close did eliminate the memory leak.
-
Memory leak with jsp and beans
The application we have created has one particular page that is designed to stay up in the browser and refresh with new information from database queries once every 60 seconds. Running with Tomcat3.2.1 and IE5.5
The problem is that the memory usage of java.exe continues to grow until the machine crashes from out of memory. It does take more than 24 hours to crash.
Things I have tried to do to track down the problem or eliminate the problem.
- I have explicitly set the scope of the beans to "page"
- I have watched the DatabaseAccess.class (the beans are all extended from this class) and put in code to watch how many instantiations of the class are made and subsequently garbage collected. This appears to be where the memory leak may reside - hundreds of instantiations from some other source than the page I am displaying.
- the top frame makes database queries for security and display of a menu system dependant upon security clearance. It does not set any time for refresh (refresh == 0). Nor does it explicitly set a scope for the beans.
- I have run a different jsp engine to see if this was directly related to Tomcat - same problem with resin2.0.0
The main jsp page that is in the bottom section of the page has the following code:
** only the relevant lines are included here
<%@ include file="../../common.jsp" %>
<%
refresh=60;
%>
<head>
<%@ include file="../../meta_head.jsp" %>
</head>
<body bgcolor="#FFFFFF" text="#003399" link="#660099" vlink="#990099" alink="#006666" leftmargin="0" topmargin="0" marginwidth="0" marginheight="0">
<%@ include file="../../access.jsp" %>
<%@ include file="../../page_title.jsp" %>
<jsp:useBean id="Line" class="jsp.Line" scope="page" />
<jsp:useBean id="Machine" class="jsp.Machine" scope="page"/>
<jsp:useBean id="Alarm_log" class="jsp.Alarm_log" scope="page"/>
contents of meta_head.jsp
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<META HTTP-EQUIV= "expires" content = "0">
<META HTTP-EQUIV="Pragma" CONTENT="no_cache">
<META HTTP-EQUIV="Cache-Control" CONTENT="no-cache" forua="true">
<META NAME="robots" content="NOINDEX,NOFOLLOW">
<%
if (refresh > 0)
%>
<meta http-equiv="Refresh" content="<%= refresh %>">
<%
If anyone has some suggestions on how to trap this memory leak, it would be terrific. Or, some other things to try to stop the instantiation of the DatabaseAccess object (perhaps setting the scope of the beans in the header to "session" or "application"?).
Thanks in advance.
Robertajsp:useBean tags scope declaration :
page = Create a new instance on each load.
session = Load instance from the session, if not there, create one
application = Load instance from the ServletContext, if not there, create one.
Not sure how you are populating the data variables, but make sure you are closing all ResultSet, (Prepared)Statement, and Connection objects.
Maybe you are looking for
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Attn: Moderator! Re thread: Adding a calendar scheduling...
This thread is duplicating here from the DW forum. Can we have it removed now? Thanks. Oops! Here's the link: http://forums.adobe.com/thread/471891?tstart=0