Struts, FormFile and memory leak

Hi All
I have a page, where file upload input is used.
This page entering/submit leads to memory leak. /does not matter with or without file to upload/
Size of wasted memory is increased with increasing html inputs count in this page.
I used tomcat 5.0.25 + struts 1.2.4 + jdk 1.5.0_01
Do you have any ideas?

try using updated versions of tomcat and struts? that's what i would do.

Similar Messages

Custom MediaStreamSource and Memory Leaks During SampleRequested

Greetings,
I have a nasty memory leak problem that is causing me to pull my hair out.
I'm implementing a custom MediaStreamSource along with MediaTranscoder to generate video to disk. The frame generation operation occurs in the SampleRequested handler (as in the MediaStreamSource example). No matter what I do - and I've tried a
ton of options - inevitably the app runs out of memory after a couple hundred frames of HD video. Investigating, I see that indeed GC.GetTotalMemory reports an increasing, and never decreasing, amount of allocated RAM.
The frame generator in my actual app is using RenderTargetBitmap to get screen captures, and is handing the buffer to MediaStreamSample.CreateFromBuffer(). However, as you can see in the example below, the issue occurs even with a dumb allocation
of RAM and no other actual logic. Here's the code:
void _mss_SampleRequested(Windows.Media.Core.MediaStreamSource sender, MediaStreamSourceSampleRequestedEventArgs args)
if ( args.Request.StreamDescriptor is VideoStreamDescriptor )
if (_FrameCount >= 3000) return;
var videoDeferral = args.Request.GetDeferral();
var descriptor = (VideoStreamDescriptor)args.Request.StreamDescriptor;
uint frameWidth = descriptor.EncodingProperties.Width;
uint frameHeight = descriptor.EncodingProperties.Height;
uint size = frameWidth * frameHeight * 4;
byte[] buffer = null;
try
buffer = new byte[size];
// do something to create the frame
catch
App.LogAction("Ran out of memory", this);
return;
args.Request.Sample = MediaStreamSample.CreateFromBuffer(buffer.AsBuffer(), TimeFromFrame(_FrameCount++, _frameSource.Framerate));
args.Request.Sample.Duration = TimeFromFrame(1, _frameSource.Framerate);
buffer = null; // attempt to release the memory
videoDeferral.Complete();
App.LogAction("Completed Video frame " + (_FrameCount-1).ToString() + "\n" +
"Allocated memory: " + GC.GetTotalMemory(true), this);
return;
It usually fails around frame 357, with GC.GetTotalMemory() reporting 750MB allocated.
I've tried tons of work-arounds, none of which made a difference. I tried putting the code that allocates the bytes in a separate thread - no dice. I tried Task.Delay to give the GC a chance to work, on the assumption that it just had no time
to do its job. No luck.
As another experiment, I wanted to see if the problem went away if I allocated memory each frame, but never assigned it to the MediaStreamSample, instead giving the sample (constant) dummy data. Indeed, in that scenario, memory consumption stayed
constant. However, while I never get an out-of-memory exception, RequestSample just stops getting called around frame 1600 and as a result the transcode operation never actually returns to completion.
I also tried taking a cue from the SDK sample which uses C++ entirely to generate the frame. So I passed the buffer as a Platform::Array<BYTE> to a static Runtime extension class function I wrote in C++.
I won't bore you with the C++ code, but even directly copying the bytes of the array to the media sample using memcpy still had the same result! It seems that there is no way to communicate the contents of the byte[] array to the media sample without
it never being released.
I know what some will say: the difference between my code and the SDK sample, of course, is that the SDK sample generates the frame _entirely_ in C++, thus taking care of its own memory allocation and deallocation. Because I want to get
the data from RenderTargetBitmap, this isn't an option for me. (As a side note, if anyone knows if there's a way to get the contents of an RT Window using DirectX, that might work too, but I know this is not a C++ forum, so...). But more importantly,
MediaStreamSource and MediaStreamSample are managed classes that appear to allow you to generate custom frames using C# or other managed code. The MediaStreamSample.CreateFromBuffer function appears to be tailored for exactly what I want. But there appears
to be no way to release the buffer when giving the bytes to the MediaStreamSample. At least none that I can find.
I know the RT version of these classes are new to Windows 8.1, but I did see other posts going back 3 years discussing a similar issue in Silverlight. That never appears to have been resolved.
I guess the question boils down to this: how do I safely get managed data, allocated during the SampleRequested handler, to the MediaStreamSample without causing a memory leak? Also, why would the SampleRequested handler just stop getting called
out of the blue, even when I artificially eliminate the memory leak problem?
Thanks so much for all input!

Hi Rob -
Thanks for your quick reply and for clarifying the terminology.
In the Memory Usage test under Analyze/Performance and Diagnostics (is that what you mean?) it's clear that each frame of video being created is not released from memory except when memory consumption gets very high. GC will occasionally kick in, but eventually
it succumbs.
Interestingly, if I reduce the frame size substantially, say 320x240, it never runs out of RAM no matter how many frames I throw at it. The Memory Usage test, however, shows the same pattern. But this time the GC can keep up and release the RAM.
After playing with this ad nauseum, I am fairly convinced I know what the problem is, but the solution still escapes me. It appears that the Transcoder is requesting frames from the MediaStreamSource (and the MediaStreamSource is providing them via
my SampleRequested handler) faster than the Transcoder can write them to disk and release them. Why would this be happening? The MediaStreamSource.BufferTime property is - I thought - used to prevent this very problem. However, changing the BufferTime seems
to have no effect at all - even changing it to ZERO doesn't change anything. If I'm right, this would explain why the GC can't do its job - it can't release the buffers I'm giving to the Transcoder via SampleRequested because the Transcoder won't give them
up until it's finished transcoding and writing them to disk. And yet the transcoder keeps requesting samples until there's no more memory to create them with.
The following code, which I made from scratch to illustrate my scenario, should be air-tight according to everything I've read. And yet, it still runs out of memory when the frame size is too large.
If you or anyone else can spot the problem in this code, I'd be thrilled to hear it. Maybe I'm omitting a key step with regard to getting the deferral? Or maybe it's a bug in the back-end? Can I "slow down" the transcoder and force it to release samples
it's already used?
Anyway here's the new code, which other than App.cs is everything. So if I'm doing something wrong it will be in this module:
using System;
using System.Collections.Generic;
using System.IO;
using System.Threading.Tasks;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using System.Diagnostics;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
using Windows.UI.Popups;
using Windows.Storage;
using Windows.Storage.Pickers;
using Windows.Storage.Streams;
using Windows.Media.MediaProperties;
using Windows.Media.Core;
using Windows.Media.Transcoding;
// The Blank Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234238
namespace MyTranscodeTest
/// <summary>
/// An empty page that can be used on its own or navigated to within a Frame.
/// </summary>
public sealed partial class MainPage : Page
MediaTranscoder _transcoder;
MediaStreamSource _mss;
VideoStreamDescriptor _videoSourceDescriptor;
const int c_width = 1920;
const int c_height = 1080;
const int c_frames = 10000;
const int c_frNumerator = 30000;
const int c_frDenominator = 1001;
uint _frameSizeBytes;
uint _frameDurationTicks;
uint _transcodePositionTicks = 0;
uint _frameCurrent = 0;
Random _random = new Random();
public MainPage()
this.InitializeComponent();
private async void GoButtonClicked(object sender, RoutedEventArgs e)
Windows.Storage.Pickers.FileSavePicker picker = new Windows.Storage.Pickers.FileSavePicker();
picker.FileTypeChoices.Add("MP4 File", new List<string>() { ".MP4" });
Windows.Storage.StorageFile file = await picker.PickSaveFileAsync();
if (file == null) return;
Stream outputStream = await file.OpenStreamForWriteAsync();
var transcodeTask = (await this.InitializeTranscoderAsync(outputStream)).TranscodeAsync();
transcodeTask.Progress = (asyncInfo, progressInfo) =>
Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
_ProgressReport.Text = "Sourcing frame " + _frameCurrent.ToString() + " of " + c_frames.ToString() +
" with " + GC.GetTotalMemory(false).ToString() + " bytes allocated.";
await transcodeTask;
MessageDialog dialog = new MessageDialog("Transcode completed.");
await dialog.ShowAsync();
async Task<PrepareTranscodeResult> InitializeTranscoderAsync (Stream output)
_transcoder = new MediaTranscoder();
_transcoder.HardwareAccelerationEnabled = false;
_videoSourceDescriptor = new VideoStreamDescriptor(VideoEncodingProperties.CreateUncompressed( MediaEncodingSubtypes.Bgra8, c_width, c_height ));
_videoSourceDescriptor.EncodingProperties.PixelAspectRatio.Numerator = 1;
_videoSourceDescriptor.EncodingProperties.PixelAspectRatio.Denominator = 1;
_videoSourceDescriptor.EncodingProperties.FrameRate.Numerator = c_frNumerator;
_videoSourceDescriptor.EncodingProperties.FrameRate.Denominator = c_frDenominator;
_videoSourceDescriptor.EncodingProperties.Bitrate = (uint)((c_width * c_height * 4 * 8 * (ulong)c_frDenominator) / (ulong)c_frNumerator);
_frameDurationTicks = (uint)(10000000 * (ulong)c_frDenominator / (ulong)c_frNumerator);
_frameSizeBytes = c_width * c_height * 4;
_mss = new MediaStreamSource(_videoSourceDescriptor);
_mss.BufferTime = TimeSpan.FromTicks(_frameDurationTicks);
_mss.Duration = TimeSpan.FromTicks( _frameDurationTicks * c_frames );
_mss.Starting += _mss_Starting;
_mss.Paused += _mss_Paused;
_mss.SampleRequested += _mss_SampleRequested;
MediaEncodingProfile outputProfile = MediaEncodingProfile.CreateMp4(VideoEncodingQuality.Ntsc);
outputProfile.Audio = null;
return await _transcoder.PrepareMediaStreamSourceTranscodeAsync(_mss, output.AsRandomAccessStream(), outputProfile);
void _mss_Paused(MediaStreamSource sender, object args)
throw new NotImplementedException();
void _mss_Starting(MediaStreamSource sender, MediaStreamSourceStartingEventArgs args)
args.Request.SetActualStartPosition(new TimeSpan(0));
/// <summary>
/// This is derived from the sample in "Windows 8.1 Apps with Xaml and C# Unleashed"
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
void _mss_SampleRequested(MediaStreamSource sender, MediaStreamSourceSampleRequestedEventArgs args)
if (_frameCurrent == c_frames) return;
var deferral = args.Request.GetDeferral();
byte[] frameBuffer;
try
frameBuffer = new byte[_frameSizeBytes];
this._random.NextBytes(frameBuffer);
catch
throw new Exception("Sample source ran out of RAM");
args.Request.Sample = MediaStreamSample.CreateFromBuffer(frameBuffer.AsBuffer(), TimeSpan.FromTicks(_transcodePositionTicks));
args.Request.Sample.Duration = TimeSpan.FromTicks(_frameDurationTicks);
args.Request.Sample.KeyFrame = true;
_transcodePositionTicks += _frameDurationTicks;
_frameCurrent++;
deferral.Complete();
Again, I can't see any reason why this shouldn't work. You'll note it mirrors pretty closely the sample in the Windows 8.1 Apps With Xaml Unleashed book (Chapter 14). The difference is I'm feeding the samples to a transcoder rather than a MediaElement (which,
again should be no issue).
Thanks again for any suggestions!
Peter

XSLT processing and Memory Leak

I have the following code for a Simple XSLT Transformation from one form of XML to another, the Size of the XML and the XSLT file are very small( few KB).
As you can see I'm explicitly setting everything to null just to make sure the objects get GC'd.
When I run the transformation on my local m/c running Windows XP on WSAD5.0 there are no memory leak issues, but when I deploy the Same app on our Server running WSAD 5.1 on Solaris, I see memory issues and finally throws an OutOfMemory Exception.
Any Ideas would be appreciated.
     public String translate( String xml, String xsltFileName) throws Exception{
          String xmlOut = null;
          File fXslt = null;
          ByteArrayOutputStream baos = null;
          javax.xml.transform.Source xmlSource = null;
          javax.xml.transform.Source xsltSource = null;
          javax.xml.transform.Result result = null;
          InputStream isXML = null;
          javax.xml.transform.TransformerFactory transFact = null;
          javax.xml.transform.Transformer trans = null;
          Templates cachedXSLT = null;
          try{
          //     String classname = System.setProperty("javax.xml.transform.TransformerFactory", "org.apache.xalan.processor.TransformerFactoryImpl");
               String classname = System.getProperty("javax.xml.transform.TransformerFactory");
               System.out.println( "******* TRANSFORMER CLASS ***** = "+classname);
               isXML = new ByteArrayInputStream( xml.getBytes());
               fXslt = new File(xsltFileName);
               baos = new ByteArrayOutputStream();
               xmlSource =
                         new javax.xml.transform.stream.StreamSource( isXML);
               xsltSource =
                         new javax.xml.transform.stream.StreamSource( fXslt);
               result =
                         new javax.xml.transform.stream.StreamResult( baos);
               // create an instance of TransformerFactory
               transFact = javax.xml.transform.TransformerFactory.newInstance();
               //transFact.setAttribute("http://xml.apache.org/xalan/features/incremental", Boolean.TRUE);
               cachedXSLT = transFact.newTemplates(xsltSource);
               trans = cachedXSLT.newTransformer();
               //trans =     transFact.newTransformer(xsltSource);
               trans.transform(xmlSource, result);
               xmlOut = baos.toString();
System.out.println("xmlout=***" + xmlOut);
          catch( Exception e){
               System.out.println( e.getMessage());
               throw e;
          finally{
               trans = null;
               //transFact = null;
               result = null;
               xsltSource = null;
               xmlSource = null;
               baos.close();
               baos = null;
               fXslt = null;
               isXML.close();
               isXML = null;
          return xmlOut;
     }

scream3r wrote:
All code work's as well, but i have a memory leak by using structure (by creating a new MyStructure());Presumably this really is java code. As such the following are the only possibilities
1. You do not have a memory leak. You are misreading a tool (probably task manager) and assuming a leak exists when it doesn't.
2. You need to call something either on MyStructure or by passing it to another class to free it. See the documentation.
3. The leak is caused by something else.

PrinterJob and Memory Leak

I have encounter a serious memory leak when printing in Java. When the following code is compiled into a 'jar' (1.4.x and 1.5.x) and run, the Print process consumes roughly 4 Mb and never gives it back. Does anybody have a solution for recovering the lost memory?
import java.awt.*;
import java.awt.print.*;
public class BasicPrint extends JComponent implements Printable {
public int print(Graphics g, PageFormat pf, int pageIndex) {
if (pageIndex > 0) {
return Printable.NO_SUCH_PAGE;
Graphics2D g2d = (Graphics2D)g;
g2d.translate(pf.getImageableX(), pf.getImageableY());
g2d.draw3DRect(20,50,100,50,true)
return Printable.PAGE_EXISTS;
public static void main(String[] args) {
PrinterJob pjob = PrinterJob.getPrinterJob();
PageFormat pf = pjob.defaultPage();
pjob.setPrintable(new BasicPrint(), pf);
try {
pjob.print();
} catch (PrinterException e) {
//// You will need to set up a break point after this to examine the consequences on
//// Memory
}

The setting is an option that's used on the java command, for instance:
java -XX:MaxHeapFreeRatio=70 <yourClassName>See the results returned by the search on the option name:
http://www.google.com/search?q=XX:MaxHeapFreeRatio

Oracle 9.2 and memory leak detection

Hi All.
I have found the following error in trace file
after shutdown database.
=================================================================
/.../udump/cpaw_ora_4427.trc
Oracle9i Enterprise Edition Release 9.2.0.1.0 - Production
With the Partitioning, Oracle Label Security, OLAP and Oracle Data Mining options
JServer Release 9.2.0.1.0 - Production
ORACLE_HOME = /.../product/9.2.0
System name: Linux
Node name: host.com
Release: 2.4.18-10bigmem
Version: #1 SMP Wed Aug 7 10:26:52 EDT 2002
Machine: i686
Instance name: orcl
Redo thread mounted by this instance: 0 <none>
Oracle process number: 10
Unix process pid: 4427, image: [email protected] (TNS V1-V3)
*** SESSION ID:(9.3) 2002-10-10 14:17:14.265
Archiving is disabled
Archiving is disabled
******** ERROR: SGA memory leak detected 16 ********
KGH Latch Directory Information
ldir state: 2 next slot: 39
Slot [ 1] Latch: 0x50005be8 Index: 1 Flags: 3 State: 2 next: (nil)
<...>
=====================================================================
Linux RedHat 7.3 (db works in archivelog mode).
How can I correct this?
Thanks in advance.
Best regards,
Andrey Demchenko.

Thanks for the answers. The oci8.dll is uncommented naturally. Otherwise it would start up just fine, but I couldn't use the database functions.
I got it working by installing 5.1.6, but replacing the oci8.dll with the one from the 5.1.0 -version. It's a very... desperate... solution, but at least it works.
I'm gonna have to try to sell the idea of using the 10g client to our DBA. I don't think though, that he'll be very enthusiastic to set it up on our production servers. We'll see.

Ringtones OS6 and memory leak

Hello, a few weeks ago I updated to OS6. I found that the ringtones from the previous OS were gone so I installed them back with this link
http://mobile.blackberry.com/resources/mbc/downloads/ringtones/drm/net_rim_bb_medialoader_ringtones_...
Now I want to delete them again because of the memory leak, but I don't know how to do it? The ringtones seem to be locked and I can't access them. Is there any way to unlock them or get access to them with the Blackberry desktop software? Thanks!

scream3r wrote:
All code work's as well, but i have a memory leak by using structure (by creating a new MyStructure());Presumably this really is java code. As such the following are the only possibilities
1. You do not have a memory leak. You are misreading a tool (probably task manager) and assuming a leak exists when it doesn't.
2. You need to call something either on MyStructure or by passing it to another class to free it. See the documentation.
3. The leak is caused by something else.

JNA Structures and memory leak

Hi all.
Sorry my JNA question in JNI forum, but i think it's exactly that forum for this.
My question:
I use an WinAPI function, and pass a Structure into the function.
Calling of this function turning in "While" cycle, for example:
public void getData() {
    MyStructure structure = new MyStructure();
    anWinAPI_Function(structure);
    Form.jLabel1.setText("use some data from this structure: " + structure.Data);
}All code work's as well, but i have a memory leak by using structure (by creating a new MyStructure());
I really know that, becose if use an int[] there is no memory leak, but i have too many WinAPI functions and can't use this way.
Methods clear() and finalize() don't give th effect.
Sorry for my english, hope that somebody can help me, thank's =)

scream3r wrote:
All code work's as well, but i have a memory leak by using structure (by creating a new MyStructure());Presumably this really is java code. As such the following are the only possibilities
1. You do not have a memory leak. You are misreading a tool (probably task manager) and assuming a leak exists when it doesn't.
2. You need to call something either on MyStructure or by passing it to another class to free it. See the documentation.
3. The leak is caused by something else.

Callbacks without excessive thread creation and memory leaks?

Hi JNI experts,
I haven't done any serious JNI programming in a couple years and I'm currently stuck with a tricky JNI problem:
My JNI code is connected to a system driver and needs to do frequent callbacks into Java code. The standard way of doing this involves calling AttachCurrentThread and DetachCurrentThread before/after the callback to Java code. However, I noticed that AttachCurrentThread creates a new java.lang.Thread each time it is invoked. Let's just say that the callback is invoked from JNI very freqently, and creating a new Thread each time that happens is not acceptable behavior for my application. Among other things, it prevents me from using the Eclipse debugger because the large number of threads being created and destroyed effectively locks up Eclipse's debugger UI. Also, it creates a CPU load that is way higher than it should be for a light-weight operation.
So, I deviated from the standard Attach/DetachCurrentThread pattern and moved the DetachCurrentThread to code that is only called when the native JNI service is terminated. As that effectively renders repeated AttachCurrentThread calls a no-op, the problem of excessive creation and destruction of threads went away, but instead I had a memory leak on my hands now. The JNI code needs to create some Java objects because it's easier to create those objects right away rather than passing a bunch of primitives to Java and assembling them into objects there. When I moved the DetachCurrentThread, those newly created objects were no longer garbage-collected even after the Java code had released all references.
When you print the stack trace of the Java callback method there is always only one frame on the stack (since it is being invoked directly from JNI). However, I suspect that older stack frames from previous invocations keep hanging around somewhere else in memory if DetachCurrentThread is not called. In other words, moving DetachCurrentThread out of the callback is an even worse option. I tried using PopLocalFrame to get rid of left over stack frames, but that didn't seem to work.
So, my question is: is there a way to make (natively initiated) callbacks from JNI to Java without memory leaks and without creating a new thread each time? Would it work if I created my own native thread that runs some sort of dispatch loop? What other options are there?
Thanks for any ideas!

Thanks for the quick reply, ejp! :-)
Your comments were very helpful; let me clarify a few things:
I don't know where you get this 'standard Attach/DetachCurrentThread pattern', but if the native callbacks always happen on the same native thread, you only need to attach it once when you get the first callback, and detach it when you get the last, if you can tell. ;-)Yes, the callback is always coming from the same native thread, but, unfortunately, I cannot tell when I get the last callback, and essentially the native service keeps running as long as the VM is running. When I say "standard pattern" I'm referring to the fact that pretty much every book, tutorial, or web site that talks about JNI callbacks shows code snippets where AttachCurrentThread is called, then the callback, and then DetachCurrentThread.
The JNI code needs to create some Java objects because it's easier to create those objects right away rather than passing a bunch of primitives to Java and assembling them into objects there.Is it really? Are you sure?I'm pretty sure in this case, though your point is well taken. The native API that calls my JNI code produces packets of that contain about 15 pieces of information of different types (ints, longs, doubles). Several packets may arrive together in a single group. Handling the data on the Java side requires a Java callback method with 15 parameters for a single packet, and it's hard to reconstruct which packets belong to one group at that point. Creating corresponding Java objects in JNI and passing them inside an array to the callback function indeed turned out to be easier.
I don't think just 'moving' the DetachCurrentThread is correct. You need to attach the thread that is doing the callbacks, as often as necessary but no oftener, and detach it when you can.I think I found the solution: my native code is starting a separate dispatcher thread that, as you suggested, attaches itself only once and then enters a dispatcher loop. The low-level call back function notifies that thread of new data via the standard Pthread API. The detach happens in JNI_OnUnload. This works without creating a new thread each time and garbage-collects the created objects properly. As the dispatcher method essentially never returns I also had to insert some DeleteLocalRef calls, because otherwise the local references prevented garbage collection.
So, for now, it looks like I'm good to go. Thanks again for the reply!

Safari + Javascript = Slowdown and Memory Leak?

I've pinned down what I think is some problem with Safari and Javascript.
If I leave Safari open for over 24 hours, with several pages open in tabs, in Activity Monitor Safari shows about 1.38Gig of VM and Safari is molasses slow.
Turning off Javascript immediately restores the speed in Safari but the HUGE VM usage remains.
So, I turned off Javascript, relaunched Safari, opened the exact same sites in tabs and left Safari sitting there for 24+ hours. It's now using only 203MBs of VM and it's still swishy fast as it should be.
It seems like a problem between Safari and Javascript. Can anyone else confirm this phenomena before I send an official report to Apple?
Thanks:)

Confirmed. Running Safari with the Debug option on will tell you that there are some memory leaks with JavaScript objects.

Applet load and memory leak

what are some methods to load an applet faster that is on the local machine? also, are there any applications to test for memory leaks? and are there ways to invoke garbage collection with code? thanx in advance.

Applet on the local machine will load faster because file is already there
use System.gc() to do a garbage collection

IOS and Memory Leaks

How do you ensure that AIR on iOS does not leak memory and how do you trace 'leak' alerts to their source? Below is a table with a bunch of leak data, but I don't see how you could trace it back to your code and find the leak. I have tried making sure variables are de-referenced when finished with them, and event listeners are either removed or weak-referenced(allows objects to be garbage collected when the listener is the last thing referencing them).
I would like to get any and all leaks out of my app so that I can submit it to the App Store.
Edit: The leak table is from what it showed in the Apple 'Instruments' tool on my Mac when scanning the app running on my phone.
Edit 2: I'm not sure how to interpret this leak data from Instruments. My app is running within the 'captive' AIR runtime on the iPhone, so theoretically I would think that any leaks in my app would stay allocated in the AIR captive runtime and not show up here. I thought maybe I should be monitoring the 'Allocations' section of the tool for notable changes in the total allocations since un-garbage-collected stuff would stay contained within AIR. If it is showing leak data in the 'leaks' section, does that mean the AIR runtime itself is leaking? None of the functions or libraries or identifiers or whatever they are listed in the leak data match stuff that I wrote, so maybe they are parts of the 'AIR engine'.
Leaked Object
Address
Size
Responsible Library
Responsible Frame
NSCFString
60
< multiple >
960
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x154a73f0
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x154a73f0
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x154a73f0
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1549ee40
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1549ee40
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1549ee40
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1549ee40
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1549ee40
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1549ee30
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1549ee30
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1549ee30
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1549ee30
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1549ee30
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1549d980
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1549d980
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1549d980
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1549d980
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1549d980
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1549d6d0
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1549d6d0
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1549d6d0
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1549d6d0
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1548b800
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1548b800
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1548b800
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1548b800
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1548b070
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1548b070
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1548b070
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1548b070
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1548b070
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x154810f0
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x154810f0
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x154810f0
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x154810f0
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x154810f0
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x154810f0
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1547ccd0
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1544dfd0
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x1544dfd0
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x11637340
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x11637330
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x11637330
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x11637330
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x11626520
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x11626520
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x11626520
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x11626520
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x11615610
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x11615610
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0x11615610
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0xda84d0
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0xda84c0
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0xda84c0
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0xd905c0
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0xd7a150
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0xd67920
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0xd67920
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0xd67920
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
NSCFString
0xd31670
16
QuartzCore
CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
GeneralBlock-16
4
< multiple >
64
libGLProgrammability.dylib
std::vector<TSymbolTableLevel*, std::allocator<TSymbolTableLevel*> >::_M_insert_aux(__gnu_cxx::__normal_iterator<TSymbolTableLevel**, std::vector<TSymbolTableLevel*, std::allocator<TSymbolTableLevel*> > >, TSymbolTableLevel* const&)
GeneralBlock-16
0x1160c700
16
libGLProgrammability.dylib
std::vector<TSymbolTableLevel*, std::allocator<TSymbolTableLevel*> >::_M_insert_aux(__gnu_cxx::__normal_iterator<TSymbolTableLevel**, std::vector<TSymbolTableLevel*, std::allocator<TSymbolTableLevel*> > >, TSymbolTableLevel* const&)
GeneralBlock-16
0x1160c700
16
libGLProgrammability.dylib
std::vector<TSymbolTableLevel*, std::allocator<TSymbolTableLevel*> >::_M_insert_aux(__gnu_cxx::__normal_iterator<TSymbolTableLevel**, std::vector<TSymbolTableLevel*, std::allocator<TSymbolTableLevel*> > >, TSymbolTableLevel* const&)
GeneralBlock-16
0x1160c700
16
libGLProgrammability.dylib
std::vector<TSymbolTableLevel*, std::allocator<TSymbolTableLevel*> >::_M_insert_aux(__gnu_cxx::__normal_iterator<TSymbolTableLevel**, std::vector<TSymbolTableLevel*, std::allocator<TSymbolTableLevel*> > >, TSymbolTableLevel* const&)
GeneralBlock-16
0x1160c700
16
libGLProgrammability.dylib
std::vector<TSymbolTableLevel*, std::allocator<TSymbolTableLevel*> >::_M_insert_aux(__gnu_cxx::__normal_iterator<TSymbolTableLevel**, std::vector<TSymbolTableLevel*, std::allocator<TSymbolTableLevel*> > >, TSymbolTableLevel* const&)
GeneralBlock-16
3
< multiple >
48
libGLProgrammability.dylib
GetSymbolTable(int)
GeneralBlock-16
0xd638f0
16
libGLProgrammability.dylib
GetSymbolTable(int)
GeneralBlock-16
0xd638f0
16
libGLProgrammability.dylib
GetSymbolTable(int)
GeneralBlock-16
0xd638f0
16
libGLProgrammability.dylib
GetSymbolTable(int)
GeneralBlock-16
0xd8dca0
16
libGLProgrammability.dylib
std::vector<TSymbolTableLevel*, std::allocator<TSymbolTableLevel*> >::_M_insert_aux(__gnu_cxx::__normal_iterator<TSymbolTableLevel**, std::vector<TSymbolTableLevel*, std::allocator<TSymbolTableLevel*> > >, TSymbolTableLevel* const&)

As I said in the post, the stuff reported in leaks doesn't match any of my variable or function names. It just shows generic stuff for the 'Responsible Library/Frame', such as GetSymbolTable(int) or QuartzCore. I didn't name anything in my code by those names. Quartz, I believe, is the stuff used to draw vectors on iOS, and the other things like 'TSymbolTableLevel' are not names I used either.
So I am not sure if this is my code leaking memory or the AIR rumtime itself leaking memory, or how you would go about interpreting Instruments reports on an AIR based app. My theory is that any stuff not garbage collected and leaked within the AIR runtime should be contained within the runtime wouldn't show up in Instruments as a leak, so I don't know if there is anything I can do within my code to make the 'leaks' dissappear or not.
There is a ton of stuff going on in my code, events and functions calling or initiating other functions and such, so it isnt as simple as just looking at what code would be fired at the time the leak shows up to figure out what piece of code the leak occured at.

Image reading and memory leak

OS Linux java 1.4.2_05-b04
Im having a strange problem. Below are 2 very simple examples of just reading an image.
The first one loops and reads images from the harddrive. Easy enough.
The second is where my problem lies. It loops through and gets the image from a URLConnection and reads it in. The problem is that it leaks. Even if you "suggest" to the garbage collector to run or set the image to null it will still leak. Ive used a java profiler to look at it and amazingly the heap never really grows but the memory the OS says it's using slowly grows.
Both examples start at about 16M according to the OS. After an hour or two the second one will grow to be around30M while the first one remains about the same. If I let it run a day the second one will be over 200M. This becomes a huge problem after a week or two.
Any help or suggestions will be greatly appreciated.
Non leaky one
public void run() {
                while(true) {
                        for(int i=9;i<41;i++) {
                        try {
                        BufferedImage img = ImageIO.read(new File("images/bibb_cam_" + i + ".jpg"));
                        img.flush();
                        this.sleep(1000);}
                        catch(Exception e) {
                        System.out.println(e);
        }Leaky One
public void run() {
                URLConnection myConn;
                while(true) {
                        for(int i=9;i<41;i++) {
                        try {
                        URL myUrl = new URL("http://data.georgianavigator.com/pub/images/cameras/gdot_cam_" + i + ".jpg");
                        myConn = (HttpURLConnection)myUrl.openConnection();
                        BufferedInputStream is = new BufferedInputStream(myConn.getInputStream());
                        BufferedImage img = ImageIO.read(is);
                        img.flush();
                        is.close();
                        this.sleep(1000);}
                        catch(Exception e) {
                        System.out.println(e);
        }

Does calling HttpURLConnection.disconnect when you're
done have any effect?No it has no effect.
Same for myConn.getInputStream().close()I am closing it.
BufferedInputStream is = new BufferedInputStream(myConn.getInputStream());
BufferedImage img = ImageIO.read(is);
img.flush();
is.close();But for good measure I went back and added that line for the hell of it. It has no effect.

JFrame and Memory Leak

Hello
In my java application i am opening a Frame to display HTML data from database but after many times i have a problem with the memory.
at each time i close the frame with dispose() but it seems that the memory does not released from JVM.
if i add the line System.gc() then seems the problem solved.
Is it correct because i have read that must avoid of calling the Garbage collector programatically?

To get better help sooner, post a [_SSCCE_|http://mindprod.com/jgloss/sscce.html] that clearly demonstrates your problem.
db

Memory leak within FOProcessor class

Hi all,
I'm trying to use the XML Publisher API (5.6.2 and 5.6.3) to generate PDF documents from XSL templates and XML data in a J2EE environment (Jboss 4.0.5) with Struts but a memory leak occurs.
It seems not to be a multithreading issue because the leak is there even if the PDF documents are generated one by one.
I made many tests to isolate the leak and I have simplified my code as much as possible: it seems to happen within the FOProcessor class.
One of the tests generates 4,500 PDF documents (one at a time) from an XML file (3 KB) and an XSL file (74 KB with blanks). Nothing else is done with the Jboss server during this test. The XSL file was created before the test from a RTF file with XML Publisher. The memory leak is around 70 KB for each PDF document (around 300 MB for the whole test).
As you can see below from the heap histogram (taken at end of test after a full garbage collection) it seems that the XSL and XML elements/attributes are not released (and thus never garbage collected).
Did I miss something or is there an actual problem with the XML/XSL parsing within the XML Publisher API?
Thanks for your help.

Object Histogram:
Size    Count     Class description
131376968 2353450 java.lang.Object[]
60389464 937300 char[]
48260304 335141 oracle.xml.parser.v2.XSLResultElement
35690000 2230625 oracle.xml.util.FastVector
24127104 1005296 java.lang.String
16539120 413478 oracle.xml.parser.v2.XSLNode$AttrValueTmpl
14757064 128058 int[]
13348768 417149 java.lang.ref.Finalizer
12701776 102220 * ConstMethodKlass
12544808 23433   byte[]
12204080 108965 oracle.xml.parser.v2.XSLText
8344600 86584   java.util.Hashtable$Entry[]
7363768 102220 * MethodKlass
5592784 138700 * SymbolKlass
5362256 335141 oracle.xml.parser.v2.XSLAttributeSet[]
5267336 8135    * ConstantPoolKlass
5234016 163563 java.util.TreeMap$Entry
5121744 213406 java.util.Hashtable$Entry
4900480 61256   oracle.xml.parser.v2.XPathStep
4087120 51089   java.lang.reflect.Method
3823216 40276   java.util.HashMap$Entry[]
3524696 8135    * InstanceKlassKlass
3378000 84450   java.util.Hashtable
3064872 127703 java.util.HashMap$Entry
2971904 6880    * ConstantPoolCacheKlass
2968560 26505   oracle.xml.parser.v2.XSLValueOf
2770656 24738   oracle.xml.parser.v2.XSLVariable
2167520 27094   oracle.xml.parser.v2.XPathFunctionCall
1880088 33573   oracle.xml.parser.v2.PathExpr
1726360 61482   java.lang.String[]
1573720 39343   java.util.HashMap
1476576 30762   oracle.xml.parser.v2.XSLExprValue
1460840 36521   java.util.TreeMap
1319360 23560   oracle.xml.parser.v2.XPathConstantExpr
1054976 16484   org.jboss.mx.server.InvocationContext
1001264 3546    * MethodDataKlass
887424 11049   short[]
835680 8705    java.lang.Class
830208 25944   oracle.xml.util.NSNameImpl
705816 29409   java.util.ArrayList
684152 4501    org.jboss.web.tomcat.tc5.session.SessionBasedClusteredSession
670288 14071   java.lang.Object[]
640832 10013   oracle.xml.parser.v2.XPathVarReference
561056 35066   javax.management.modelmbean.DescriptorSupport
556272 23178   EDU.oswego.cs.dl.util.concurrent.ConcurrentReaderHashMap$Entry
552984 30451   java.lang.Class[]
494760 2945    oracle.xml.parser.v2.XSLTemplate
480792 20033   antlr.ANTLRHashString
442576 27661   java.lang.Integer
432096 4501    org.jboss.web.tomcat.statistics.ReplicationStatistics$TimeStatistic
429040 10726   org.hibernate.hql.ast.tree.Node
369880 9247    javax.management.modelmbean.ModelMBeanOperationInfo
312384 19524   java.util.TreeMap$3
305368 5453    java.net.URL
287392 8981    org.jboss.mx.interceptor.ReflectedDispatcher
259264 338     EDU.oswego.cs.dl.util.concurrent.ConcurrentReaderHashMap$Entry[]
252280 4505    org.jboss.cache.lock.ReadWriteLockWithUpgrade
238600 5965    org.jboss.mx.interceptor.PersistenceInterceptor
238600 5965    org.jboss.mx.interceptor.AttributeDispatcher
236616 9859    org.jboss.mx.server.AbstractMBeanInvoker$OperationKey
219776 3434    java.lang.reflect.Constructor
206880 6465    javax.management.modelmbean.ModelMBeanAttributeInfo
193168 2259    java.lang.reflect.Method[]
173184 5412    java.lang.ref.SoftReference
164920 589     oracle.xml.parser.v2.XSLStylesheet
164464 541     * ObjArrayKlassKlass
152832 6368    org.dom4j.tree.DefaultAttribute
149472 2076    java.lang.reflect.Field
144160 4505    org.jboss.cache.Node
143160 5965    org.jboss.mx.interceptor.ModelMBeanAttributeInterceptor
140600 3515    org.apache.xerces.dom.DeferredTextImpl
140224 2740    javax.management.modelmbean.ModelMBeanAttributeInfo[]
139056 7658    boolean[]
134664 3359    java.lang.String[][]
131936 1178    oracle.xml.parser.v2.XSLCondition
131936 1178    oracle.xml.parser.v2.XSLForEach
129072 2668    javax.management.modelmbean.ModelMBeanOperationInfo[]
128952 5373    EDU.oswego.cs.dl.util.concurrent.ConcurrentHashMap$Entry
124776 1733    org.hibernate.hql.ast.tree.IdentNode
115200 1800    javax.management.modelmbean.ModelMBeanInfoSupport
113088 2356    oracle.xml.parser.v2.AdditiveExpr
109416 4559    java.beans.PropertyChangeSupport
108960 1135    java.io.ObjectStreamClass
108120 4505    org.jboss.cache.lock.IdentityLock
105864 345     long[]
98752   3086    java.io.ObjectStreamClass$WeakClassKey
97968   4082    java.util.Vector
96672   2014    java.util.Properties
94240   589     oracle.xml.parser.v2.XSLOutput
90072   3753    javax.management.ObjectName$Property
87432   3643    javax.management.MBeanParameterInfo
82368   858     org.hibernate.hql.ast.tree.DotNode
81248   5078    java.lang.Long
78656   1229    org.hibernate.mapping.Column
77664   4854    java.util.Collections$SynchronizedSet
77448   3227    java.util.LinkedList$Entry
73824   769     org.jboss.mx.modelmbean.XMBean
73536   4596    java.util.Hashtable$KeySet
72144   4509    EDU.oswego.cs.dl.util.concurrent.CopyOnWriteArraySet
72144   4509    EDU.oswego.cs.dl.util.concurrent.CopyOnWriteArrayList
72144   4509    org.jboss.cache.Fqn
72080   4505    org.jboss.cache.lock.ReadWriteLockWithUpgrade$WriterLock
72080   4505    org.jboss.cache.lock.LockStrategyRepeatableRead
72080   4505    org.jboss.cache.lock.ReadWriteLockWithUpgrade$ReaderLock
72080   4505    org.jboss.cache.lock.LockMap
72016   4501    org.apache.catalina.session.StandardSessionFacade
71776   4486    java.io.FileDescriptor
70680   589     oracle.xml.parser.v2.XSLCallTemplate
70680   589     oracle.xml.parser.v2.XSLApplyTemplates
70224   154     org.hibernate.persister.entity.SingleTableEntityPersister
68296   2774    javax.management.ObjectName$Property[]
68160   1065    org.apache.xerces.dom.DeferredElementNSImpl
67760   770     org.hibernate.loader.entity.EntityLoader
66992   19      EDU.oswego.cs.dl.util.concurrent.ConcurrentHashMap$Entry[]
65968   1178    oracle.xml.parser.v2.XPathFilterExpr
65968   589     oracle.xml.parser.v2.XMLUTF8Reader
64432   4027    java.util.HashSet
63648   1326    oracle.xml.parser.v2.XMLNode[]
63440   1586    org.hibernate.loader.DefaultEntityAliases
61256   589     oracle.xml.parser.v2.XSLNode
61256   589     oracle.xml.parser.v2.XMLReader
60816   2534    org.apache.xerces.xni.QName
57360   478     org.hibernate.hql.ast.tree.FromElement
56976   1187    org.hibernate.mapping.Property
56544   1178    oracle.xml.parser.v2.XSLNodeSetExpr
56544   1178    oracle.xml.parser.v2.MultiplicativeExpr
56544   1178    oracle.xml.parser.v2.EqualExpr
54384   618     oracle.xml.parser.v2.XMLError
49392   2783    javax.management.MBeanParameterInfo[]
47648   1489    java.util.LinkedHashMap$Entry
47120   589     oracle.xml.parser.v2.XMLByteReader[]
...

Memory leak in Flash with Win7, IE9, 64bit

I have been having an issue for quite some time on 2 different computers. Both of them are Windows 7 64bit and use IE9.
Generally I have 1 - 5 tabs open in IE at any given time. Usually one of them is a tab for Yahoo Mail. Other tabs are related to whatever I may be searching for or doing at that time, so pretty varied. Throughout the day at random times I will begin to get a grey icon for anywhere on some tabs where there is supposed to be a flash video (like the ad in the right side of the Yahoo Mail tab)... When it happens I can open Task Manager in windows and I notice that 1 or two "iexplore.exe *32" processes have memory consumed in excess of 600,000K. When I end those processes I am again able to see any flash videos that need to be viewed.
If I leave Task Manager open throughout the day I can see the memory consumption increase on various tabs until I cannot see any more flash videos or even open new tabs in IE until I end those processes. Further, the memory does not get released if I just close the tabs in IE, but I must either end the specific process or close all tabs in IE so that IE is completely unloaded.
I have since uninstalled the Flash player and the issue has gone away. I can re-install the flash player and the issue returns. Can you please help? This has been a huge annoyance and I had hoped that it would be fixed sooner or later. Unfortunately it has not been fixed and has finally prompted me to post something....

First, I just wanted to follow up on this thread and let you guys know that we'll continue to look into it. I also want to clarify some player behavior, and provide tips for helping to identify a defect that we can take action on.
Whenever you refresh/reload a tab, the browser should signal to us that our process is being destroyed, at which point we would release all of our resources and shut down. SergeStone's comment above makes it sound like this might not be happening in a particular case. I'm going to build out a few tests this week to explore this in more detail, and I'll follow up with results.
Also, it's worth discussing the difference between memory consumption and memory leaks. Flash Player is designed to consume a percentage of your available memory. If you have a 32-bit machine with 2GB of RAM, we're going to consume a lot less memory than a 64-bit system with 16GB of RAM.
Not all Flash content is authored well. If the ActionScript developer is continuously loading objects into their SWF and never releasing them (a slide-show is a good simplistic example), you'll see a steady usage increase as each new object loads in. You should also see that evenutally, our automatic Garbage Collection process will kick in. Memory will peak out, and then you'll see a short CPU spike as we look at all of the available objects and cull as many unused ones as possible, consumed memory will dip down significantly (as long as we can cull stuff), and then start growing again until the next time GC kicks in. We tend to do this judiciously, as poorly-timed GC can cause games to stutter if it happens when lots of things are moving around on the display and you don't have a lot of available CPU.
If it's our bug, it should be straightforward to fix, and I can follow up to this thread with a beta build for you guys to evaluate once we have one available. In the meantime, it would be interesting to know if you're seeing the problem on our current Beta builds (which is where we would do the work).
Here's a link to the latest Beta download:
http://labs.adobe.com/downloads/flashplayer11-5.html
Also, the simplest example is the most actionable. If you can find a situation where a site in a single tab reproduces the problem, that's a quick and easy thing to deal with. If the repro case involves opening seven tabs and waiting six hours, someone needs to repeat that over and over, until they can isolate what content experiences the problem and then iterate a bunch more with a debugger attached to try and isolate the root cause. The more complicated the content, the more difficult that is.
Secondly, I wanted to offer some actionable suggestions that you could use now to work around this issue.
Try Firefox or Chrome. Both of these browsers run Flash Player as a separate process.
For those of you using Performance Monitor and other tools to measure, you can directly observe the resources used by Flash Player
For the folks concerned about Bookmarks synchronization, both Firefox and Chrome provide native bookmark syncing and import from IE mechanisms.
Xmarks is a really nice, free utility that provides cross-browser, cross-platform bookmark synchronization.
Thanks,
Jeromie Clark

Struts, FormFile and memory leak

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