Feedly Causes Monstrous Memory Leaks
I've waited for a new release (FF31) to see if it had been fixed but nope the issue is still there. In my Feedly I've kept one specific feed populated just to test this. Whenever I try to read that feed Firefox freezes my entire computer not just the browser. It goes from usually around 500mb to well over 2gb in a matter of seconds.
I've read that addons can affect the browser behavior but even with them disabled the leak still happens.
I'm not sure where to go from here. Anyone have any pointers or a solution? I really don't want to have to switch to Chrome just to read Feedly...
I am pretty sure this is not nuts, but I had another user test it and they noticed when loading the particular feed url the memory % spikes up 200K, and most likely it has to do with the images that are loading on that page.
Similar Messages
-
Whether our application caused the memory leak
whether have the command to find out whether our application caused the memory leak !
We are using Jdev10g + JHeadstart(Release 9.0.5.1, BC4J + Struts + JSP) to build our enterprise application,
but when the application running some days in our Application Server(RedHat AMD64, with 8GB RAM), the memory consumed was growth seriously in production environment (one OC4J instance will caused almost 2G memory ulilization after running 2 days) that is caused us to restart the instance each day ! we doubt and worry
about maybe our application suffer the memory leak problem, so we want to know have the command to find out whether our application caused the memory leak
issue and which program is the major murderer for memory.Ting,
Unfortunately there is no 'command' that will show you the location of a memory leak. First I would scrutinizing your code for any obvious 'leaks'. Then, you should obtain some statistics about the usage of your system. One important aspect is how long a HttpSession usually lives. If you have thousands of users that stay online the entire day and never 'time out', and if you have users on the system 24 hours a day, then the sheer number of HttpSessions might be a problem.
JHeadstart 9.0.x tends to have rather 'heavy' session objects. This can easily be solved by adding some actions to clear up DataObjects and DataObjectSets of previous 'Groups' when entering a new Group. A good place would be between the 'DynamicActionRouter' and the 'ActionRouters'. Just before entering the 'EmployeeActionRouter', you could remove all DataObjects and DataObjectSets that might be left on the Session by actions of the other ActionRouters.
Also it would be interesting to see if the garbage collector can do its thing when the system is less busy. For instance, if your application has a smaller load during the weekend, what is the memory usage on Sunday at midnight compared to, say, Friday at noon. Has the memory load dropped consistently with the decreased number of online users, or does too much memory stay allocated? If so, then there's more going on than just HttpSession objects.
If all this does not lead to a solution, I suggest using a profiling tool such as OptimizeIt to investigate the memory usage of the application in detail.
Kind regards,
Peter Ebell
JHeadstart Team -
Find out whether our application caused the memory leak
whether have the command to find out whether our application caused the memory leak !
We are using Jdev10g + BC4J + Struts + JSP to build our enterprise application,
but when the application running some days in our Application Server(RedHat AS3-86, with 4GB RAM), the memory consumed is serious ! we doubt and worry
about maybe our application suffer the memory leak problem, so we want to know have the command to find out whether our application caused the memory leak
issue and which program is the major murderer for memory.The second scenario is, as we perform some deployment activity on 10g, the memory usage chart shows a sharp consumption of memory about 1.5GB .the loss memory almost be display in "other" legend chart !
Please give us some advice , thanks in advance -
By any chance long living filestream object cause unmanaged memory leak?
Hi,
I am running my application where in I have one file stream object which live for long duration, say its life time is equivalent to life time of application. So by any chance this kind of object causes unmanaged memory leak in the application. Because when
I see private bytes for my application, it is higher than the all bytes in heap counter. That mean there is a unmanaged memory leak. So does such filestream object cause such behaviour?
Thanks and Regards,
LucasWhat makes you think it's the file stream that leaks unmanaged memory? There could be other parts of your applications that do that.
FileStream doesn't usually allocate unmanaged memory. Its internal buffer is a GC heap allocated byte[] array. The only unmanaged memory allocation that I know of in FileStream is a OVERLAPPED structure used for async I/O. If you use BeginRead/Write make
sure you call EndRead/Write correctly, otherwise that structure may be leaked.
@Joel Engineer: "When a stream uses ASCII encoding under certain cases nulls are added to the data for block alignment."
FileStream doesn't have anything to do with text encoding and I've told you that before. Next time when I run into a post that makes such a claim I'll simply delete it. This display of ignorance has lasted more than enough. -
Possible causes for memory leak in Java and Tomcat
I would like to enquire what are the typical mistakes done by programmers that will cause memory leak in Java and Tomcat.
Please refer the below site. It will give more points about the memory leak and how to rectify it.
http://www.experts-exchange.com/Software/Server_Software/Application_Servers/Q_20981562.html?cid=336 -
Why does system exec cause a memory leak to occur?
Sorry if this has been posted before, but I can't quite figure out why this VI is causing a gigantic memory leak (losing nearly 500K of memory a second). It's a simple system exec call, and I even trivialized everything in order to try and discover the problem.
Does anyone see a huge problem here? I've tried calling up taskkill afterward as well, though that seemed to make little difference.
If you don't trust my trivial program (and you probably shouldn't), I've also included the source files for the program - it's a one-line C++ program that returns immediately.
Any insight is greatly appreciated.
Thanks!
Attachments:
Dilution.vi.zip 11 KBTry putting a wait - even a 0 second wait - in your loop and see if it makes a difference. Without a wait, LabVIEW will try to run that loop as fast as possible, possibly so fast that it never yields time to free resources.
-
Web Service data source report causes Java memory leak
Crystal Report designer fails to preview a report whose data source is a WSDL web service. This happens when the Java run time process has exceeded the memory limit specified in the CRConfig.xml file. The Java memory is never released by Crystal Reports until the Crystal Reports Designer is closed. Version is Crystal reports 2008 (product version 12.2.4.507).
This error also occurs in the Crystal Reports Viewer when used in a Microsoft .NET application (framework 3.5) referencing CrystalDecisions.CrystalReports.Engine.dll v12.0.2000.0, CrystalDecisions.Enterprise.Framework.dll v12.0.1100.0, CrystalDecisions.Enterprise.InfoStore.dll v12.0.1100.0, CrystalDecisions.ReportSource.dll v12.0.2000.0, CrystalDecisions.Shared.dll v12.0.2000.0
I load the ReportDocument object based on the location of the .rpt file and then set the ReportSource object of the CrystalReportViewer control:
string FullReportName = "TestFile.rpt";
ReportDocument reportDoc = new ReportDocument();
reportDoc.Load(FullReportName, OpenReportMethod.OpenReportByTempCopy);
this.crystalReportViewer1.ReportSource = reportDoc;
reportDoc.Close();
reportDoc.Dispose();
GC.Collect();
The code displays the report in the report viewer. However, every time the report is refreshed the Java runtime memory increases until the application cannot display the results. The error messages are "Failed to retrieve data from the database." followed by "Cannot determine the queries necessary to get data for this report. Details: Unexpected error". If you try to refresh the data once again the following errors occur: "Failed to retrieve data from the database." then "Cannot determine the queries necessary to get data for this report. Details: Schema file is invalid Java heap space".
Increasing the java heap space in the CRConfig.xml file merely prolongues the onset of this error.
Is there a service pack or hot fix for this???
PLEASE HELP.Many thanks for your help. This solved the issue for our .NET code, however the leak is still present in the report designer. I was also wondering if you could help further: because of the limits on the java memory process is there a way to ensure that a separate java process is started for each report that is loaded in my report viewers collection? Essentially the desktop application that i have created uses a tab control to display each type report, so each tab goes through the following code when displaying a report and closing a tab:
Is there a way to ensure that a different Java process is kicked off each time that I display a different report? My current code in c# always uses the same Java process so the memory ramps up. The code to load the report and then dispose of the report through closing the tab (and now the Java process) looks like this:
private void LoadCrystalReport(string FullReportName)
ReportDocument reportDoc = new ReportDocument();
reportDoc.Load(FullReportName, OpenReportMethod.OpenReportByTempCopy);
this.crystalReportViewer1.ReportSource = reportDoc;
private void DisposeCrystalReportObject()
if (crystalReportViewer1.ReportSource != null)
ReportDocument report = (ReportDocument)crystalReportViewer1.ReportSource;
foreach (Table table in report.Database.Tables)
table.Dispose();
report.Database.Dispose();
report.Close();
report.Dispose();
GC.Collect();
Thanks -
SetObjectArrayElement causes memory leak
Hello There,
I have got a little problem that I'm not able to solve for myself. Look at this piece of
JNI code:
double** result = calculator->getResult();
jobjectArray table = env->NewObjectArray(height, env->FindClass("[D"), 0);
for (int i = 0;i < height;i++) {
jdoubleArray row = env->NewDoubleArray(width);
env->SetDoubleArrayRegion(row, 0, width, (jdouble*)result);
env->SetObjectArrayElement(table, i, row);
env->DeleteLocalRef(row);
This fragment causes a memory leak , but if I omit the env->SetObjectArrayElement(table, i, row);
call, there is no memory leak. I don't really know what exactly causes this memory leak and how
to fix it. Any help would be greatly appreciated ;-)
MichaelOk I think the code snippet I posted was not complete...
double** result = calculator->getResult();
jobjectArray table = env->NewObjectArray(height, env->FindClass("[D"), 0);
for (int i = 0;i < height;i++) {
jdoubleArray row = env->NewDoubleArray(width);
env->SetDoubleArrayRegion(row, 0, width, (jdouble*)result);
env->SetObjectArrayElement(table, i, row);
env->DeleteLocalRef(row);
jobject rawData = env->NewObject(classreg["data/rawdata1d"], methodIDreg["data/rawdata1d/init"], width, height);
env->SetObjectField(rawData, fieldIDreg["data/rawdata1d/data"], table);
return rawData;
The array I create is set as a member of a Java object which
is then returned by the native method. As long as this object
is in use by my program it's clear that the memory I allocated
for the array never gets released. But when the Java object is
no longer used by my program and the garbage collector releases
the memory occupied by this object, shouldn't it release the memory
occupied by the array I created in my native method too? Apparently
this is not the case, do I have to release the Java array for myself?
Michael
Edited by: Michael_JavaAddict on Aug 25, 2010 3:03 AM -
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 -
Memory Leaks Unresponsive Mouse
2009 8 core Mac Pro w/ 24 GB of RAM, ATI Radeon 4870, and a SeriTek PCIe eSATA card (card only has drives connected when running a manual drive clone). When running Toast 10 or Parallels 9, my RAM will fill up (I use a program called Menu Meters to monitor stuff). This machine worked just fine under OS 10.9 and earlier - no issues like this at all. ClamXAV will also completely fill the RAM up (the meter will be full green, instead of part green, then mostly grey when Toast or Parallels fills it up). I have to use Terminal to purge it so that the machine is usable.
The other thing that happens is that sometimes when the computer wakes up or I am in the middle of doing something, the mouse will still move, but the dock will not pop open and the left button the mouse doesn't respond. The right button will open the right click menu, but will not respond normally at all. I have tried a different Magic Mouse, but the problem is the same.
I thought that it may be a problem with the factory RAM and the Kingston RAM not playing nicely together. So I ran it with just the factory 8 GB and then ran it with the Kingston 16 GB - the problem persists no matter which RAM is installed. All of the RAM also passes the memory tests in Rember and TechTool.
So, I need to find out if someone thinks that maybe the bluetooth module may be going bad causing the mouse issues. I also need to find out what is causing the memory leaks. I followed the steps that someone gave on this site to boot into safe mode, repair permissions, reset PRAM, then reset SMC (or the other way around - I did it like they said to). It did nothing to fix the problem.
I need some guidance here. As I stated early on, the machine worked perfectly with OS 10.9. I have WAY too much software that I use, so doing a completely fresh install is out of the question - I don't have time to reload everything. This problem is annoying and I know that I am not the only one having these issues. Any input will be greatly appreciated. Thanks in advance.Here is the EtreCheck report:
Problem description:
Memory leaks when using Toast 10 or Parallels 9. Mouse also become unresponsive (it will move, but left button does not work and dock will not pop open - mouse problem happens independent of the RAM being filled up - different mouse was tried with same result).
EtreCheck version: 2.1.5 (108)
Report generated January 9, 2015 at 9:20:59 PM MST
Click the [Support] links for help with non-Apple products.
Click the [Details] links for more information about that line.
Click the [Adware] links for help removing adware.
Hardware Information: ℹ️
Mac Pro (Early 2009) (Verified)
Mac Pro - model: MacPro4,1
2 2.26 GHz Quad-Core Intel Xeon CPU: 8-core
24 GB RAM Upgradeable
DIMM 1
4 GB DDR3 ECC 1066 MHz ok
DIMM 2
4 GB DDR3 ECC 1066 MHz ok
DIMM 3
2 GB DDR3 ECC 1066 MHz ok
DIMM 4
2 GB DDR3 ECC 1066 MHz ok
DIMM 5
4 GB DDR3 ECC 1066 MHz ok
DIMM 6
4 GB DDR3 ECC 1066 MHz ok
DIMM 7
2 GB DDR3 ECC 1066 MHz ok
DIMM 8
2 GB DDR3 ECC 1066 MHz ok
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en2: 802.11 a/b/g/n
Video Information: ℹ️
ATI Radeon HD 4870 - VRAM: 512 MB
AL2216W 1680 x 1050 @ 60 Hz
System Software: ℹ️
OS X 10.10.1 (14B25) - Uptime: 2:4:35
Disk Information: ℹ️
HL-DT-ST BD-RE WH12LS39
HL-DT-ST DVDRAM GH24NS90
SAMSUNG HD103SJ disk1 : (1 TB)
EFI (disk1s1) <not mounted> : 210 MB
OS 10.10.1 (disk1s2) / : 999.35 GB (410.30 GB free)
Recovery HD (disk1s3) <not mounted> [Recovery]: 650 MB
SAMSUNG HD103SJ disk2 : (1 TB)
EFI (disk2s1) <not mounted> : 210 MB
Extra Storage (disk2s2) /Volumes/Extra Storage : 999.86 GB (554.20 GB free)
SAMSUNG HD103SJ disk3 : (1 TB)
EFI (disk3s1) <not mounted> : 210 MB
Extra Storage 2 - Scratch (disk3s2) /Volumes/Extra Storage 2 - Scratch : 999.86 GB (39.54 GB free)
WDC WD5001AALS-00LWTA0 disk0 : (500.11 GB)
EFI (disk0s1) <not mounted> : 210 MB
BOOTCAMP (disk0s2) /Volumes/BOOTCAMP : 499.90 GB (275.71 GB free)
USB Information: ℹ️
Shuttle Technology Inc. E-USB Bridge
Sony C6606
Apple, Inc. Keyboard Hub
Apple Inc. Apple Keyboard
Apple Inc. BRCM2046 Hub
Apple Inc. Bluetooth USB Host Controller
Firewire Information: ℹ️
Apple Computer, Inc. iSight 200mbit - 400mbit max
Gatekeeper: ℹ️
Anywhere
Kernel Extensions: ℹ️
/Applications/Hotspot Shield.app
[not loaded] com.anchorfree.tun (1.0) [Support]
/Applications/Parallels Desktop.app
[not loaded] com.parallels.kext.hidhook (9.0 24251.1052177) [Support]
[not loaded] com.parallels.kext.hypervisor (9.0 24251.1052177) [Support]
[not loaded] com.parallels.kext.netbridge (9.0 24251.1052177) [Support]
[not loaded] com.parallels.kext.usbconnect (9.0 24251.1052177) [Support]
[not loaded] com.parallels.kext.vnic (9.0 24251.1052177) [Support]
/Applications/TechTool Deluxe.app
[not loaded] com.micromat.iokit.ttpatadriver (5.0.0) [Support]
[not loaded] com.micromat.iokit.ttpfwdriver (5.0.0) [Support]
/Applications/TechTool Protogo/Protogo Applications/TechTool Pro 7.app
[not loaded] com.micromat.driver.spdKernel (1 - SDK 10.8) [Support]
[not loaded] com.micromat.driver.spdKernel-10-8 (1 - SDK 10.8) [Support]
/Applications/Temperature Monitor 4.94/Temperature Monitor 4.94.app
[not loaded] com.bresink.driver.BRESINKx86Monitoring (8.0) [Support]
/Applications/Toast 11 Titanium/Spin Doctor.app
[not loaded] com.hzsystems.terminus.driver (4) [Support]
/Applications/Toast 7 Titanium/Toast Titanium.app
[not loaded] com.roxio.TDIXController (1.6) [Support]
/Library/Extensions
[loaded] at.obdev.nke.LittleSnitch (4216 - SDK 10.8) [Support]
/System/Library/Extensions
[loaded] com.SiliconImage.driver.Si3132 (1.2.5) [Support]
[not loaded] com.devguru.driver.SamsungComposite (1.2.63 - SDK 10.6) [Support]
[not loaded] com.microsoft.driver.MicrosoftMouse (8.2) [Support]
[not loaded] com.roxio.BluRaySupport (1.1.6) [Support]
/System/Library/Extensions/MicrosoftMouse.kext/Contents/PlugIns
[not loaded] com.microsoft.driver.MicrosoftMouseBluetooth (8.2) [Support]
[not loaded] com.microsoft.driver.MicrosoftMouseUSB (8.2) [Support]
/System/Library/Extensions/ssuddrv.kext/Contents/PlugIns
[not loaded] com.devguru.driver.SamsungACMControl (1.2.63 - SDK 10.6) [Support]
[not loaded] com.devguru.driver.SamsungACMData (1.2.63 - SDK 10.6) [Support]
[not loaded] com.devguru.driver.SamsungMTP (1.2.63 - SDK 10.5) [Support]
[not loaded] com.devguru.driver.SamsungSerial (1.2.63 - SDK 10.6) [Support]
Startup Items: ℹ️
HP IO: Path: /Library/StartupItems/HP IO
SiCoreService: Path: /Library/StartupItems/SiCoreService
Startup items are obsolete in OS X Yosemite
Launch Agents: ℹ️
[running] at.obdev.LittleSnitchUIAgent.plist [Support]
[loaded] com.coupons.coupond.plist [Support]
[running] com.micromat.TechToolProAgent.plist [Support]
[loaded] com.oracle.java.Java-Updater.plist [Support]
[invalid?] com.parallels.mobile.prl_deskctl_agent.launchagent.plist [Support]
[invalid?] com.parallels.mobile.startgui.launchagent.plist [Support]
[not loaded] com.teamviewer.teamviewer.plist [Support]
[not loaded] com.teamviewer.teamviewer_desktop.plist [Support]
Launch Daemons: ℹ️
[running] at.obdev.littlesnitchd.plist [Support]
[loaded] com.adobe.fpsaud.plist [Support]
[loaded] com.bombich.ccc.plist [Support]
[loaded] com.hp.lightscribe.plist [Support]
[running] com.micromat.TechToolProDaemon.plist [Support]
[loaded] com.microsoft.office.licensing.helper.plist [Support]
[loaded] com.oracle.java.Helper-Tool.plist [Support]
[invalid?] com.parallels.mobile.dispatcher.launchdaemon.plist [Support]
[failed] com.parallels.mobile.kextloader.launchdaemon.plist [Support] [Details]
[not loaded] com.teamviewer.teamviewer_service.plist [Support]
User Launch Agents: ℹ️
[loaded] com.facebook.videochat.[redacted].plist [Support]
[loaded] com.google.keystone.agent.plist [Support]
[running] com.nchsoftware.expressinvoice.agent.plist [Support]
[loaded] uk.co.markallan.clamxav.clamscan.plist [Support]
[loaded] uk.co.markallan.clamxav.freshclam.plist [Support]
User Login Items: ℹ️
iTunesHelper Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
SMARTReporter Application (/Applications/SMARTReporter/SMARTReporter.app)
BetterSnapTool Application (/Applications/BetterSnapTool.app)
smcFanControl Application (/Applications/smcfancontrol_2_2_2/smcFanControl.app)
Android File Transfer Agent Application (/Users/[redacted]/Library/Application Support/Google/Android File Transfer/Android File Transfer Agent.app)
Internet Plug-ins: ℹ️
JavaAppletPlugin: Version: Java 8 Update 25 Check version
FlashPlayer-10.6: Version: 16.0.0.235 - SDK 10.6 [Support]
Default Browser: Version: 600 - SDK 10.10
AdobePDFViewerNPAPI: Version: 11.0.06 - SDK 10.6 [Support]
CouponPrinter-FireFox_v2: Version: 5.0.3 - SDK 10.6 [Support]
AdobePDFViewer: Version: 11.0.06 - SDK 10.6 [Support]
Flash Player: Version: 16.0.0.235 - SDK 10.6 [Support]
QuickTime Plugin: Version: 7.7.3
SharePointBrowserPlugin: Version: 14.4.6 - SDK 10.6 [Support]
iPhotoPhotocast: Version: 7.0 - SDK 10.8
Safari Extensions: ℹ️
AdBlock [Installed]
F.B. Purity - Cleans Up Facebook [Installed]
OpenIE [Installed]
3rd Party Preference Panes: ℹ️
Déjà Vu [Support]
Flash Player [Support]
FUSE for OS X (OSXFUSE) [Support]
Java [Support]
MacFUSE [Support]
MenuMeters [Support]
Microsoft Mouse [Support]
MouseLocator [Support]
NTFS-3G [Support]
TechTool Protection [Support]
Time Machine: ℹ️
Time Machine not configured!
Top Processes by CPU: ℹ️
48% plugin-container
39% fontd
6% firefox
5% WindowServer
4% bluetoothaudiod
Top Processes by Memory: ℹ️
928 MB firefox
412 MB plugin-container
258 MB mds_stores
180 MB iTunes
129 MB Finder
Virtual Memory Information: ℹ️
19.38 GB Free RAM
3.11 GB Active RAM
1.88 GB Inactive RAM
1.38 GB Wired RAM
2.40 GB Page-ins
0 B Page-outs
Diagnostics Information: ℹ️
Jan 9, 2015, 07:16:57 PM Self test - passed
Jan 8, 2015, 11:37:48 AM /Library/Logs/DiagnosticReports/ClamXav_2015-01-08-113748_[redacted].cpu_resour ce.diag [Details]
Jan 8, 2015, 11:21:46 AM /Users/[redacted]/Library/Logs/DiagnosticReports/Preview_2015-01-08-112146_[red acted].crash -
Hello, For the last couple of months, I am having issues with one of my tabs or the program itself causing a memory leak. I was hoping that subsequent releases would fix the problem, but when I downloaded V.11 it did not help.
I use tab mix plus and at any time, usually have about 25 tabs open. Everything functioned okay for 8 or so months up until recently.
I am wondering if there is a way to try to track down what is causing the leak. If it is one of my open pages, i will get rid of it. I tried opening one page at a time from scratch, but could not find the issue. .
I always have flash block enabled to cut down on the website junk.
using OSX firefox v11.Now, I'm not going to say it's an Add-On problem because from the research I've been doing on this problem for the last half hour shows that everyone has DIFFERENT add-ons, but everyone's having the SAME problem....
So I went through my add-ons and disabled them one by one, and the single add-on that has been giving me grief is the latest WOT add-on. So, I have Firefox 11 (so does my wife) and we both have the WOT add-on. But that's where the similarity ends... I have Windows 7 x64, she has Windows XP x86.... but she doesn't have the memory leak problem.
What I see is a sawtooth pattern over time. Memory goes up a little over 30+ seconds, then drops down. But over half an hour, the peaks of the sawtooth are larger, and it doesn't drop back down to the same level again - always a little more than before. And before you know it, FF is peaking at 1.5+GB, dropping down to 1.2GB... and FF is running very, very slowly.... excessive disk accesses (paging probably, though I apparently I still have 1.5 to 2.0 GB of free RAM). Killing FF frees it all up, and if I open FF again, it's back to using 250MB of RAM.
So, it's not the add-ons per se, but how they're interacting with FF (or the other way round).... most likely, it's this plug-in container they created to stop add-ons from taking FF with them when they crashed. Seems to have created more problems than it has solved..... would be great if you could choose not to use it.... -
DataSocket memory leak problem (2VO0SF00) -- more info?
When upgrading to LabVIEW 8.5 recently, I noticed the following known issue in the readme file:
"ID: 2VO0SF00
DataSocket/OPC Leaks Memory using ActiveX VIs to perform open-write-close repeatedly
If you call the DataSocket Open, DataSocket Write, and DataSocket Close functions in succession repeatedly, LabVIEW leaks memory. Workaround — To correct this problem, call the DataSocket Open function once, use the DataSocket Write function to write multiple times, and then use the DataSocket Close function."
Looking back, I think this problem may have been present in previous LabVIEW releases as well, and might be giving rise to a problem that's been dogging me for quite some time (see my thread, "Error 66 with DataSockets", http://forums.ni.com/ni/board/message?board.id=170&thread.id=187206), in addition to general slow/glitchy behaviour when my VI's have been running continuously for a long time. But in order to determine whether or not this issue affects me, and how I should go about fixing it in the context of my own programs, I need a bit more information about the nature of the issue itself and the inner workings of the DataSocket VI's. Any help or insight the community can provide into this would be greatly appreciated!
Here are my questions:
It is my understanding from the "known issue" description above that the memory leak happens when you have a DS Open wired to a DS Write wired to a DS Close, all inside a loop (example 1), and that the suggested workaround would be to move the DS Open and DS Close functions out of the loop on opposite sides, wired to the DS Write which remains inside the loop (example 2). Is this correct?
Does this leak also happen when performing DS open-read-close's repeatedly (example 3)?
What happens when a DS Write (or DS Read) is called without a corresponding DS Open and DS Close (examples 4a and 4b)? Does it implicitly do a DS open before doing the write operation and a DS close afterwards? What I'm getting at is this: would having an isolated DS Write (or DS Read) inside a loop, not connected to any DS Open or DS Close functions at all, cause this same memory leak?
If one computer is running the DS server and a second computer is running the VI with the repeated open-write-close's, on which computer does the memory leak occur?
In my question #1 workaround (example 2), the DS Open and DS Close outside the loop are routed through a shift register and in to and out of the DS Write inside the loop. If the DS connection id goes into the DS Write "connection in" and then splits and goes around the DS Write and out to the DS Close, without coming out of the DS Write "connection out" (example 5), will the memory leak still be avoided? I.e. if the DS Write function doesn't have anything connected to its "connection out", will it try to do an implicit DS Close?
If the VI causing the memory leak is stopped, but LabVIEW stays running, will the leaked memory be reclaimed? What if the VI is closed? What if all of LabVIEW is closed?
FYI, in the examples above "x1a" is a statically-defined DataSocket on the DS server running on the computer Max, to which the computer running the example VI's has read/write access. My actual application has numerous VI's and hundreds of DataSocket items, many of which are written to / read from every 50-100 ms in the style of examples 4a and 4b.
Does anyone have any idea about this stuff?
Thanks in advance,
Patrick
Attachments:
examples_jpg1.zip 63 KB
examples_vi1.zip 40 KBHi Meghan,
Yes, some of the larger VIs in my application do write to / read from several hundred DataSockets, so it's not feasible to use shift registers for each one individually, and hence why I'm passing the references into an array, etc.
Your Alternate Solution 2 is more along the lines of something that would work for me. However, my actual code has a lot of nested loops, sequences and DataSocket items which are not all written to in the same frame, so this solution would still be difficult to implement: it would be cumbersome to unpack the entire 500-element reference id array and build a new one (maintaining the positions and values of the unaffected elements) every time I write to some small subset of the DataSockets.
I think I have a solution which solves the problem and is also scalable to the size of my application -- I've attached it as Example 7. Do you think this will avoid the memory leak? It's the same as your Alternate Solution 2, except that instead of building a new array out of the DS Write reference outs, each reference out replaces the appropriate element of the original array.
If I understand you correctly, in order to avoid implicit reference opens and closes, a DS Write needs to have both it's reference in and reference out wired to something. Thus, even though my Example 7 replaces an element of the array with an identical value, and therefore doesn't actually change the array (which would be a silly thing to do normally), the DS Writes have their reference outs wired to something, and eventually in a convoluted way to a DS Close, so it should avoid the memory leak.
Just out of curiosity (I don't think anything like this would apply to my application or any fixes I implement), when would the implicit reference close happen in the attached Example 8? The DS Write has its reference in and reference out both connected to temporally "adjacent" DS Writes via the shift register, so perhaps it wouldn't try to close the reference on each loop iteration? Or would it look into the future and see that there is no DS Close and decide to implicitly do that itself? Or maybe only the DS Write on the last loop iteration does this?
Thanks for bearing with me through this,
Patrick
Attachments:
example73.JPG 40 KB
example83.JPG 14 KB -
Memory leak using xslprocessor.valueof in 11.1.0.6.0 - 64bit ??
My company has made the decision to do all of our internal inter-system communication using XML. Often we may need to transfer thousands of records from one system to another and due to this (and the 32K limit in prior versions) we're implementing it in 11g. Currently we have Oracle 11g Enterprise Edition Release 11.1.0.6.0 on 64 bit Linux.
This is a completely network/memory setup - the XML data comes in using UTL_HTTP and is stored in a CLOB in memory and then converted to a DOMDocument variable and finally the relevant data is extracted using xslprocessor.valueof calls.
While this is working fine for smaller datasets, I've discovered that repeated calls with very large documents cause the xslprocessor to run out of memory with the following message:
ERROR at line 1:
ORA-04030: out of process memory when trying to allocate 21256 bytes
(qmxdContextEnc,)
ORA-06512: at "XDB.DBMS_XSLPROCESSOR", line 1010
ORA-06512: at "XDB.DBMS_XSLPROCESSOR", line 1036
ORA-06512: at "XDB.DBMS_XSLPROCESSOR", line 1044
ORA-06512: at "SCOTT.UTL_INTERFACE_PKG", line 206
ORA-06512: at line 28
Elapsed: 00:03:32.45
SQL>
From further testing, it appears that the failure occurs after approximately 161,500 calls to xslprocessor.valueof however I'm sure this is dependent on the amount of server memory available (6 GB in my case).
I expect that we will try and log a TAR on this, but my DBA is on vacation right now. Has anyone else tried calling the xslprocessor 200,000 times in a single session?
I've tried to make my test code as simple as possible in order to track down the problem. This first block simply iterates through all of our offices asking for all of the employees at that office (there are 140 offices in the table).
DECLARE
CURSOR c_offices IS
SELECT office_id
FROM offices
ORDER BY office_id;
r_offices C_OFFICES%ROWTYPE;
BEGIN
OPEN c_offices;
LOOP
FETCH c_offices INTO r_offices;
EXIT WHEN c_offices%NOTFOUND;
utl_interface_pkg.get_employees(r_offices.office_id);
END LOOP;
CLOSE c_offices;
END;
Normally I'd be returning a collection of result data from this procedure, however I'm trying to make things as simple as possible and make sure I'm not causing the memory leak myself.
Below is what makes the SOAP calls (using the widely circulated UTL_SOAP_API) to get our data and then extracts the relevant parts. Each office (call) should return between 200 and 1200 employee records.
PROCEDURE get_employees (p_office_id IN VARCHAR2)
l_request utl_soap_api.t_request;
l_response utl_soap_api.t_response;
l_data_clob CLOB;
l_xml_namespace VARCHAR2(100) := 'xmlns="' || G_XMLNS_PREFIX || 'EMP.wsGetEmployees"';
l_xml_doc xmldom.DOMDocument;
l_node_list xmldom.DOMNodeList;
l_node xmldom.DOMNode;
parser xmlparser.Parser;
l_emp_id NUMBER;
l_emp_first_name VARCHAR2(100);
l_emp_last_name VARCHAR2(100);
BEGIN
--Set our authentication information.
utl_soap_api.set_proxy_authentication(p_username => G_AUTH_USER, p_password => G_AUTH_PASS);
l_request := utl_soap_api.new_request(p_method => 'wsGetEmployees',
p_namespace => l_xml_namespace);
utl_soap_api.add_parameter(p_request => l_request,
p_name => 'officeId',
p_type => 'xsd:string',
p_value => p_office_id);
l_response := utl_soap_api.invoke(p_request => l_request,
p_url => G_SOAP_URL,
p_action => 'wsGetEmployees');
dbms_lob.createtemporary(l_data_clob, cache=>FALSE);
l_data_clob := utl_soap_api.get_return_clob_value(p_response => l_response,
p_name => '*',
p_namespace => l_xml_namespace);
l_data_clob := DBMS_XMLGEN.CONVERT(l_data_clob, 1); --Storing in CLOB converted symbols (<">) into escaped values (<, &qt;, >). We need to CONVERT them back.
parser := xmlparser.newParser;
xmlparser.parseClob(parser, l_data_clob);
dbms_lob.freetemporary(l_data_clob);
l_xml_doc := xmlparser.getDocument(parser);
xmlparser.freeparser(parser);
l_node_list := xslprocessor.selectNodes(xmldom.makeNode(l_xml_doc),'/employees/employee');
FOR i_emp IN 0 .. (xmldom.getLength(l_node_list) - 1)
LOOP
l_node := xmldom.item(l_node_list, i_emp);
l_emp_id := dbms_xslprocessor.valueOf(l_node, 'EMPLOYEEID');
l_emp_first_name := dbms_xslprocessor.valueOf(l_node, 'FIRSTNAME');
l_emp_last_name := dbms_xslprocessor.valueOf(l_node, 'LASTNAME');
END LOOP;
xmldom.freeDocument(l_xml_doc);
END get_employees;
All of this works just fine for smaller result sets, or fewer iterations (only the first two or three offices). Even up to the point of failure the data is being extracted correctly - it just eventually runs out of memory. Is there any way to free up the xslprocessor? I've even tried issuing DBMS_SESSION.FREE_UNUSED_USER_MEMORY but it makes no difference.Replying to both of you -
Line 206 is the first call to xslprocessor.valueof:
LINE TEXT
206 l_emp_id := dbms_xslprocessor.valueOf(l_node, 'EMPLOYEEID');
This is one function inside of a larger package (the UTL_INTERFACE_PKG). The package is just a grouping of these functions - one for each type of SOAP interface we're using. None of the others exhibited this problem, but then none of them return anywhere near this much data either.
Here is the contents of V$TEMPORARY_LOBS immediately after the crash:
SID CACHE_LOBS NOCACHE_LOBS ABSTRACT_LOBS
132 0 0 0
148 19 1 0
SID 132 is a SYS session and SID 148 is mine.
I've discovered with further testing that if I comment out all of the xslprocessor.valueof calls except for the first one the code will complete successfully. It executes the valueof call 99,463 times. If I then uncomment one of those additional calls, we double the number of executions to a theoretical 198,926 (which is greater than the 161,500 point where it usually crashes) and it runs out of memory again. -
HTTPService + XML Load + Memory Leak
Hi all....
I have noticed a memory leak in my application. This leak was
not apparent when the application was completed some months back
which is what left me a little confused as all I have done since
was upgrade to Flex 3 and possibly updated / changed my Flash
player.
I think I have found the cause to this problem (below) but am
not 100% sure that it is the "actual" problem or any reasons to
back my thoughts up, so have listed what I have checked / tried
along the way (maybe I have missed something)....
My Discovery Process:
I started profiling my application but did not find anything
out of the ordinary. I did a code walk-through double checking I
had cleaned up after myself, removing and even nulling all items
etc but still to now success - the leak is still there.
I have profiled the app in the profiler for reasonably long
periods of time.
All the classes etc being used within the app are consistent
in size and instance amount and there is no sign of any apparent
leak.
I am using a HTTPService that is loading XML data which I am
refreshing every 5 seconds. On this 5 second data refresh some
class instances are incremented but are restored to the expected
amount after a GC has occurred. The GC seems to take longer, the
longer the app is running, therefore more and more instances are
being added to the app, but when the GC eventually runs it "seems"
to clear these instances to the expected amount.
After scratching my head for a while I decided to make a copy
of my application, rip everything out, and focus in my data load,
where I found a problem!
I have now just a HTTPService that loads an XML file every 5
seconds, and this is all I currently have in the app (as I ripped
the rest of the code out), e.g:
Code:
<mx:Application xmlns:mx="
http://www.adobe.com/2006/mxml"
....... creationComplete="initApp()" >
<mx:HTTPService
id="httpServiceResults"
url="
http://myIP:myPort/myRoot/myXML.cfm"
resultFormat="e4x"
result="httpResultHandler(event)" />
<script....... >
private var timerPulse:Timer;
private function initApp():void
httpServiceResults.send();
timerPulse = new Timer(5000, 0);
private function httpResultHandler(event:ResultEvent):void
timerPulse.start();
timerPulse.addEventListener(TimerEvent.TIMER, timerRefresh);
public function timerRefresh(eventObj:TimerEvent):void
timerPulse.stop();
timerPulse.removeEventListener(TimerEvent.TIMER,
timerRefresh);
timerPulse.reset();
httpServiceResults.send();
</script>
</mx:Application>
This is pretty much the code I am currently using and it
leaks.
I ran and monitored this in both the profiler and the
activity / task manager, and after running the app for 1800 seconds
(30 min) in the profiler, the memory size grew from 50mg to 165mg
just sending the HTTPService.
I tried loading the service in multiple ways including in AS
rather than MXML creating new instances of it each time, resetting
it, nulling it etc... but nothing prevented this memory increase.
I then tried to load the XML using different methods such as
using the URLRequest and URLLoader which again caused a memory
leak.
What still confuses me is that this leak did not exist in the
previous version and not a great deal has changed since then apart
from upgrading to Flex 3 and possibly upgrading my Flash payer
(which I believe is a possible cause)
After looking into this issue a bit more deeply, I read a few
blogs / forums and other people are experiencing the same problems
- even with a lot bigger leaks in some cases all when reloading
large sets of XML data into Flex - however, I as of yet found no
solution to this leak - people with a similar problem believe it is
not due to a memory leak more a GC error, and others pointing
towards the Flash Player itself that is leaking - I don't really
know.
Findings so far during investigation of this issue:
* App leaks for both HTTPService and ULRRequest / URLLoader
methods
* App only leaks when calling a data loader
* The size of the leak seems to depend on the size of the
XML being loaded
* The size of the leak also seems to be affected by the
applications heaviness - the greater seems to enhance the leak
An interesting factor I have noticed is that if I copy the
XML from my "myXML.cfm" that I link to in my HTTPService and copy
the contents of the file into my own XML file stored within the
Flex project root itself: ""myXML.xml"" the leak disappears... like
it seems to link when loading the XML over a network, however as my
network knowledge is not great I am not sure what to make of this -
any ideas???
Could the connection to the XML document cause leaks??? is
there anything else that could cause this leak??? have I something
in my code sample that could cause this leak??? or could any of the
other things I have mentioed cause this leak???
Any help / ideas would be greatly appreciated.
Thanks,
Jon.I also observed heavy memory leak from using httpservice with
XML data. I am using Flex3 builder under Linux. My Flex application
polls httpservice every 10 seconds. The reply is a short XML
message less than 100 bytes. This simple polling will consume 30+
MB of memory every hour. I leave it idling for several hours and it
took 200 MB of memory. No sign of garbage collection at all. -
Hi All,
I had posted this query to couple of other groups ..I am still struglling with this issue..Hope someone will help me out here
I have very basic application which uses DataSerives over RTMP channel to populate dataGrid , I have not used any user defined component.
This application has got LOAD data and Remove data Button just to simulate the actual application
What happens , when I click on LOAD data , It loads the data from server(JBOSS) then I Remove all the data and force the GC to run
If I continuously keep loading and removing the data , memory goes up every time and after some times It reaches to threshold and finally crashes the Browser.
In actual application as soon as user logs in a dedicated DS destination is created..
private function createDestination(destName:String):void{
var remoteService:RemoteObject = new RemoteObject("DestinationManager");
remoteService.addEventListener(ResultEvent.RESULT, resultHandler,false,0,true);
var operation:AbstractOperation = remoteService.getOperation("createDestination");
operation.send(destName);
var cs:ChannelSet = new ChannelSet();
var rtmpChannel:RTMPChannel = ServerConfig.getChannel("my-rtmp") as RTMPChannel;
cs.addChannel(rtmpChannel);
tradeService = new DataService() ;
tradeService.destination=destName;
tradeService.channelSet = cs;
Now when user hits on Load data button to load the trade data ...
public function loadData():void
var remoteService:RemoteObject = new RemoteObject("filterRemoteVO");
var operation:AbstractOperation = remoteService.getOperation("loadData");
tradeService.fill(tradeCollection);
operation.send(rowData.text ,GUIID);
tradeList.dataProvider = tradeCollection;
Remove Data hit I clean all the resource and released collection :-
public function removeAll():void{
if(tradeList.dataProvider){
tradeCollection.source = new Array();
tradeList.dataProvider.source = new Array();
tradeList.dataProvider = null;
tradeService.release();
tradeService.releaseCollection(tradeCollection);
tradeService.channelSet.disconnectAll();
tradeService.disconnect();
tradeService.logout();
System.gc();
Except these 3 function I don't have any code which could cause memory leak.
I m using
LCDS 2.5
Flex 3.0
JBoss4.2
Please see the mxml file below , If possible please have a look at it , I might not be using dataSerice API correctly.
I have been trying to solve this leak for last two week , I really need help from you guys.
My client has already evaluating other contemporary technology because of this memory issue.
I have also created scalled down war file which can be deployed on any java application server.
Any help will greatly be appreciated
Regards,
Dam
######################## MXML##########################
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"
creationComplete="init();" height="100%" width="100%"
>
<mx:Script >
<![CDATA[
import mx.containers.GridRow;
import mx.utils.Base64Decoder;
import mx.utils.StringUtil;
import mx.events.CollectionEvent;
import mx.formatters.Formatter;
import mx.events.ResizeEvent;
import mx.controls.DataGrid;
import mx.effects.Fade;
import mx.events.DataGridEvent;
import mx.utils.ObjectUtil;
import mx.events.ScrollEvent;
import mx.formatters.DateFormatter;
import mx.events.ListEvent;
import mx.data.mxml.DataService;
import mx.messaging.config.ServerConfig;
import mx.messaging.channels.RTMPChannel;
import mx.messaging.ChannelSet;
import mx.rpc.AbstractOperation;
import mx.rpc.remoting.RemoteObject;
import mx.collections.ArrayCollection;
import mx.controls.Alert;
import mx.rpc.events.ResultEvent;
import mx.messaging.messages.*;
import mx.messaging.events.*;
import mx.controls.Alert;
private var GUIID:String;
private var lastRollOverIndex:Number;
public var tradeService:DataService=null;
public var tradeCollection:ArrayCollection = new ArrayCollection();
public var flag:Boolean = false;
private function init():void {
var guiId:String ="TEST";
createDestination(GUIID);
public function getData():void{
// memory.text =""+ ((System.totalMemory / 1024)/1024);
public function releaseDataServices():void {
// tradeService.fill(null);
tradeService.release();
// tradeService.releaseCollection(tradeCollection);
tradeService.channelSet.disconnectAll();
tradeService.disconnect();
tradeService.logout();
//tradeService.dataStore = null;
/*Function for creating destination*/
private function createDestination(destName:String):void{
var remoteService:RemoteObject = new RemoteObject("DestinationManager");
remoteService.addEventListener(ResultEvent.RESULT, resultHandler,false,0,true);
var operation:AbstractOperation = remoteService.getOperation("createDestination");
operation.send(destName);
var cs:ChannelSet = new ChannelSet();
var rtmpChannel:RTMPChannel = ServerConfig.getChannel("my-rtmp") as RTMPChannel;
cs.addChannel(rtmpChannel);
tradeService = new DataService() ;
tradeService.destination=destName;
tradeService.channelSet = cs;
//This function calls dataservice fill method depending on wheather destination is created or not
private function resultHandler(event:ResultEvent):void{
//call data service as destination is created successfully
var status:Boolean = event.result as Boolean
// Alert.show("status="+status);
if(status){
getData();
else{
//TODO report error to MATS app
public function removeAll():void{
if(tradeList.dataProvider){
tradeCollection.source = new Array();
tradeList.dataProvider.source = new Array();
tradeList.dataProvider = null;
tradeService.release();
// tradeService.releaseCollection(tradeCollection);
tradeService.channelSet.disconnectAll();
tradeService.disconnect();
tradeService.logout();
System.gc();
public function loadData():void
var remoteService:RemoteObject = new RemoteObject("filterRemoteVO");
var operation:AbstractOperation = remoteService.getOperation("loadData");
tradeService.fill(tradeCollection);
operation.send(rowData.text ,GUIID);
tradeList.dataProvider = tradeCollection;
]]>
</mx:Script>
<mx:DataGrid id="tradeList"
initialize="tradeList.dataProvider = tradeCollection" horizontalScrollPolicy="auto"
height="659" x="0" y="84">
<mx:columns>
<mx:DataGridColumn headerText="Security Description" dataField="securityDesc"
/>
<mx:DataGridColumn headerText="B/S" dataField="transactionType"
/>
<mx:DataGridColumn headerText="Amount" dataField="amount"
/>
<mx:DataGridColumn headerText="Price Text" dataField="priceText"
/>
<mx:DataGridColumn headerText="Counterparty" dataField="counterParty"
/>
<mx:DataGridColumn headerText="Trade Date" dataField="tradeDate"
/>
<mx:DataGridColumn headerText="Settle Date" dataField="settleDate"
/>
<mx:DataGridColumn headerText="Trade Status" dataField="tradeStatusId"
/>
<mx:DataGridColumn headerText="Trader" dataField="trader"
/>
<mx:DataGridColumn headerText="Salesperson" dataField="salesperson"
/>
<mx:DataGridColumn headerText="Ticket Number" dataField="tradeNumber"
/>
<mx:DataGridColumn headerText="Entry Date" dataField="tradeTime"
/>
<mx:DataGridColumn headerText="Cancel Date" dataField="cancelDate"
/>
<mx:DataGridColumn headerText="Cancel Time" dataField="cancelTime"
/>
</mx:columns>
</mx:DataGrid >
<mx:Grid x="149" y="23" width="995">
<mx:GridRow width="100%" height="100%">
<mx:GridItem width="100%" height="100%">
<mx:Label text="Enter No of obejcts" width="111"/>
</mx:GridItem>
<mx:GridItem width="100%" height="100%">
<mx:TextInput name="row" id="rowData" width="97"/>
</mx:GridItem>
<mx:GridItem width="100%" height="100%">
<mx:Button label="Load Data" click='loadData()'/>
</mx:GridItem>
<mx:GridItem width="100%" height="100%">
<mx:Button label="removeAll" click='removeAll()'/>
</mx:GridItem>
<mx:GridItem width="100%" height="100%">
<mx:Label text="Total Memory"/>
</mx:GridItem>
<mx:GridItem width="100%" height="100%">
<mx:TextInput text="Total Memory" id="memory" width="97"/>
</mx:GridItem>
<mx:GridItem width="100%" height="100%">
<mx:Label text="Grid Row Count"/>
</mx:GridItem>
<mx:GridItem width="100%" height="100%">
<mx:TextInput name="GridRowCountN" id="GridRowCount" width="97"/>
</mx:GridItem>
</mx:GridRow>
</mx:Grid>
</mx:Application>Hi Natasha,
Sorry for late reply.
I tried your suggestion but It did not help to release memory. Actully,this app contains only one event handler which is for remote method call , I dont think this could cause any memory leak.
Profiling session reveals that It is the issue of DataService class.I dont know How do I convince Adobe to investigate this issue.
Regards,
Dharmendra
Maybe you are looking for
-
How do I get iPhone to store deleted messages in MobileMe trash?
Here's the scenario: I have a Mac Pro, MacBook and iPhone 4. I use IMAP MobileMe with Mail.app for email while at home, and while I'm away and don't have my MacBook with me, I use the MobileMe web interface. I want all of my deleted messages from the
-
After upgrade from Lion to Mavericks Osx I noticed that when I have a directory shared for network purposes, usually when I want to open this shared directory I will see the little Mac wheel. It is very annoying to wait 10 sec. to proceed with openin
-
Save epub with notes and underlined words
Can anyone help me? I need to save on an external disk some epub publications that i have studied and underlined, but it looks like this is not possible.any idea would be appreciated.thanks. Rino
-
What is other content in my ipad
My ipad is full and I am trying to manage the content. I uncheck all of my apps, movies and any content that is large content and it still say there is like 9 Gb of items in the yellow "other" category. I cant figure out what this stuff is to prevent
-
I web is not saving the locations of the imported media. Here is the console window error. Any ideas? 12/26/11 2:12:00 PM iWeb[2165] Could not save link back pointers. 12/26/11 2:12:02 PM iWeb[2165] Assertion fail