Memory leaks continuing in Safari and Web Kit
Will Apple ever fix the Safari memory leak?
As many of you know lots of reports over the years of Safari & Webkit having problems with memory leaks, and haven't seen a fix to it yet. This is a very important factor for usability of Safari.
A memory leak is when, after a period of time, your browser, which is the online field that's designed to function like a page and is used to access web pages and surf the World Wide Web, consumes more and more of your computer's memory until it reaches a point where it literally becomes impossible to use your computer. It's like your computer's stuck in cyber mud. You have to close any open software program or restart the entire computer.
Safari starts about 426.9 MB of real memory and 412.6 MB of virtual memormy and can go up to 1Gb of memory.
Has anyone come up with a fix to this problem ? If anyone has a workaround for this, please share it.
Meanwhile, Apple really should eliminate this problem once and for all.
FYI, I'm using Safari version 5.0.3 and the latest WebKit r72487 which was built on 21 November 2010.
My experience is that the same thing happens with Firefox and Chrome. The only difference with Chrome is that since the tabs are separate threads, they consume memory separately. The nice thing about that is that once the tab is closed memory is instantly freed. However, the helper thread always gets larger. Whether this is a memory leak or a consequence of having an application open over a long period of time is -I believe- open to discussion. I have experienced similar results with Eclipse (a memory intensive application). Daily shutdown/reboot and a few "Quit"s per a few hours fixes this issue. I don't know whether you would like to do this, though.
Using Safari 5.0.2.
Similar Messages
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Potential Memory Leak during Marshelling of a Web Service Response
I believe I have found a memory leak when using the configuration below.
The memory leak occurs when calling a web service. When the web service function is marshelling the response of the function call, an "500 Internal Server Error ... java.lang.OutOfMemoryError" is returned from OC4J. This error may be seen via the TCP Packet Monitor in JDeveloper.
Unfortunately no exception dump is outputted to the OC4J log.
Configuration:
Windows 2000 with 1 gig ram
JDeveloper 9.0.5.2 with JAX/RPC extension installed
OC4J 10.0.3
Sun JVM version 1.4.2_03-b02
To demonstrate the error I created a simple web service and client. See below the client and web service function that demonstrates it.
The web service is made up of a single function called "queryTestOutput".
It returns an object of class "TestOutputQueryResult" which contains an int and an array.
The function call accepts a one int input parameter which is used to vary the size of array in the returned object.
For small int (less than 100). Web service function returns successfully.
For larger int and depending on the size of memory configuration when OC4J is launched,
the OutOfMemoryError is returned.
The package "ws_issue.service" contains the web service.
I used the Generate JAX-RPC proxy to build the client (found in package "ws_issue.client"). Package "types" was
also created by Generate JAX-RPC proxy.
To test the web service call execute the class runClient. Vary the int "atestValue" until error is returned.
I have tried this with all three encodings: RPC/Encoded, RPC/Literal, Document/Literal. They have the
same issue.
The OutOfMemory Error is raised fairly consistently using the java settings -Xms386m -Xmx386m for OC4J when 750 is specified for the input parameter.
I also noticed that when 600 is specified, the client seems to hang. According to the TCP Packet Monitor,
the response is returned. But, the client seems unable to unmarshal the message.
** file runClient.java
// -- this client is using Document/Literal
package ws_issue.client;
public class runClient
public runClient()
* @param args
* Test out the web service
* Play with the atestValue variable to until exception
public static void main(String[] args)
//runClient runClient = new runClient();
long startTime;
int atestValue = 1;
atestValue = 2;
//atestValue = 105; // last one to work with default memory settings in oc4j
//atestValue = 106; // out of memory error as seen in TCP Packet Monitor
// fails with default memory settings in oc4j
//atestValue = 600; // hangs client (TCP Packet Monitor shows response)
// when oc4j memory sessions are -Xms386m -Xmx386m
atestValue = 750; // out of memory error as seen in TCP Packet Monitor
// when oc4j memory sessions are -Xms386m -Xmx386m
try
startTime = System.currentTimeMillis();
Ws_issueInterface ws = (Ws_issueInterface) (new Ws_issue_Impl().getWs_issueInterfacePort());
System.out.println("Time to obtain port: " + (System.currentTimeMillis() - startTime) );
// call the web service function
startTime = System.currentTimeMillis();
types.QueryTestOutputResponse qr = ws.queryTestOutput(new types.QueryTestOutput(atestValue));
System.out.println("Time to call queryTestOutput: " + (System.currentTimeMillis() - startTime) );
startTime = System.currentTimeMillis();
types.TestOutputQueryResult r = qr.getResult();
System.out.println("Time to call getresult: " + (System.currentTimeMillis() - startTime) );
System.out.println("records returned: " + r.getRecordsReturned());
for (int i = 0; i<atestValue; i++)
types.TestOutput t = r.getTestOutputResults();
System.out.println(t.getTestGroup() + ", " + t.getUnitNumber());
catch (Exception e)
e.printStackTrace();
** file wsmain.java
package ws_issue.service;
import java.rmi.RemoteException;
import javax.xml.rpc.ServiceException;
import javax.xml.rpc.server.ServiceLifecycle;
public class wsmain implements ServiceLifecycle, ws_issueInterface
public wsmain()
public void init (Object p0) throws ServiceException
public void destroy ()
System.out.println("inside ws destroy");
* create an element of the array with some hardcoded values
private TestOutput createTestOutput(int cnt)
TestOutput t = new TestOutput();
t.setComments("here are some comments");
t.setConfigRevisionNo("1");
t.setItemNumber("123123123");
t.setItemRevision("arev" + cnt);
t.setTestGroup(cnt);
t.setTestedItemNumber("123123123");
t.setTestedItemRevision("arev" + cnt);
t.setTestResult("testResult");
t.setSoftwareVersion("version");
t.setTestConditions("conditions");
t.setStageName("world's a stage");
t.setTestMode("Test");
t.setTestName("test name");
t.setUnitNumber("UnitNumber"+cnt);
return t;
* Web service function that is called
* Create recCnt number of "records" to be returned
public TestOutputQueryResult queryTestOutput (int recCnt) throws java.rmi.RemoteException
System.out.println("Inside web service function queryTestOutput");
TestOutputQueryResult r = new TestOutputQueryResult();
TestOutput TOArray[] = new TestOutput[recCnt];
for (int i = 0; i< recCnt; i++)
TOArray[i] = createTestOutput(i);
r.setRecordsReturned(recCnt);
r.setTestOutputResults(TOArray);
System.out.println("End of web service function call");
return r;
* @param args
public static void main(String[] args)
wsmain wsmain = new wsmain();
int aval = 5;
try
TestOutputQueryResult r = wsmain.queryTestOutput(aval);
for (int i = 0; i<aval; i++)
TestOutput t = r.getTestOutputResults()[i];
System.out.println(t.getTestGroup() + ", " + t.getUnitNumber());
catch (Exception e)
e.printStackTrace();
** file ws_issueInterface.java
package ws_issue.service;
import java.rmi.Remote;
import java.rmi.RemoteException;
public interface ws_issueInterface extends java.rmi.Remote
public TestOutputQueryResult queryTestOutput (int recCnt) throws java.rmi.RemoteException;
** file TestOutputQueryResult.java
package ws_issue.service;
public class TestOutputQueryResult
private long recordsReturned;
private TestOutput[] testOutputResults;
public TestOutputQueryResult()
public long getRecordsReturned()
return recordsReturned;
public void setRecordsReturned(long recordsReturned)
this.recordsReturned = recordsReturned;
public TestOutput[] getTestOutputResults()
return testOutputResults;
public void setTestOutputResults(TestOutput[] testOutputResults)
this.testOutputResults = testOutputResults;
** file TestOutput.java
package ws_issue.service;
public class TestOutput
private String itemNumber;
private String itemRevision;
private String configRevisionNo;
private String testName;
private String testConditions;
private String stageName;
private String testedItemNumber;
private String testedItemRevision;
private String unitNumber;
private String testStation;
private String testResult;
private String softwareVersion;
private String operatorID;
private String testDate; // to be datetime
private String comments;
private int testGroup;
private String testMode;
public TestOutput()
public String getComments()
return comments;
public void setComments(String comments)
this.comments = comments;
public String getConfigRevisionNo()
return configRevisionNo;
public void setConfigRevisionNo(String configRevisionNo)
this.configRevisionNo = configRevisionNo;
public String getItemNumber()
return itemNumber;
public void setItemNumber(String itemNumber)
this.itemNumber = itemNumber;
public String getItemRevision()
return itemRevision;
public void setItemRevision(String itemRevision)
this.itemRevision = itemRevision;
public String getOperatorID()
return operatorID;
public void setOperatorID(String operatorID)
this.operatorID = operatorID;
public String getSoftwareVersion()
return softwareVersion;
public void setSoftwareVersion(String softwareVersion)
this.softwareVersion = softwareVersion;
public String getStageName()
return stageName;
public void setStageName(String stageName)
this.stageName = stageName;
public String getTestConditions()
return testConditions;
public void setTestConditions(String testConditions)
this.testConditions = testConditions;
public String getTestDate()
return testDate;
public void setTestDate(String testDate)
this.testDate = testDate;
public String getTestName()
return testName;
public void setTestName(String testName)
this.testName = testName;
public String getTestResult()
return testResult;
public void setTestResult(String testResult)
this.testResult = testResult;
public String getTestStation()
return testStation;
public void setTestStation(String testStation)
this.testStation = testStation;
public String getTestedItemNumber()
return testedItemNumber;
public void setTestedItemNumber(String testedItemNumber)
this.testedItemNumber = testedItemNumber;
public String getTestedItemRevision()
return testedItemRevision;
public void setTestedItemRevision(String testedItemRevision)
this.testedItemRevision = testedItemRevision;
public String getUnitNumber()
return unitNumber;
public void setUnitNumber(String unitNumber)
this.unitNumber = unitNumber;
public int getTestGroup()
return testGroup;
public void setTestGroup(int testGroup)
this.testGroup = testGroup;
public String getTestMode()
return testMode;
public void setTestMode(String testMode)
this.testMode = testMode;I use web services a lot and I sympathize with your issue. I
struggle with similar issues and I found this great utility that
will help you confirm if your webservice is returning the data
correctly to Flex. I know you said it works in other applications
but who knows if flex is calling it correctly etc. This utility is
been the most amazing tool in helping me resolve web service
issues.
http://www.charlesproxy.com/
Once you can confirm the data being returned is good you can
try several things in flex. Try changing your result format to
object or e4x etc. See how that plays out. Not sure where your
tapping in to look at your debugger, you might want to catch it
right at the result handler before converting to any collections. .
If nothing here helps maybe post some code to look at. .
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Memory leak in oracle.exe and mds.exe
We are facing Memory leak in oue MDM server. Our environment details
are as follows;
MDM 5.5 SP5 ( Build 5.5.41.70)
Oracle 10.2 patch 2
windows server 2003 SP1
XI 7.0 SP 9
If server is running continuously 3-4 days then Nonpaged memory is
getting exausted and server does not respond. Now we have to retart the
windows server manually.
If we see the task manager it is shows more than 200,000 handles for
oracle.exe and more than 100,000 handles for mds.exe.
1: Oracle.exe -- more than 200000 handles ( Approx >5000 is problem)
2: Mds.exe -- more than 100000 handles ( Approx >5000 is problem)
Since these applications are not releasing the handles properly so all
nonpaged memory gets exausted and server stops responding.
If we restart the mdm server, database and OracleserviceMDMD, then
nonpaged memory is released. But some times even if we restart these
services, we do not get nonpaged memory released. So we have to restart
the windows server.
please help me if anyone else have faced the same problem.
regards
SaurabhClosing as question is answered in MDM forum.
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Memory Leak in latest Safari (5.0.4)?
Since I updated to the latest Mac OS/X update Safari's memory usage seems to be increasing in a way that looks like a memory leak. I usually leave my mac running all of the time and find that after a few days Safari is using over a 1GB of real memory and 3-5GB of virtual memory. Sometimes it also seems to freeze — with the disk churning in the background when I try to switch to it.
It may be related to viewing high-resolution images (it seems to happen more often if I view very high-resolution pictures, for example Nasa Picture of the Day).
Anyone else seeing these issues? Occasionally it crashes when I try to kill it — I'll post the dump info next time.Hi,
Delete the Safari cache and history more often, not to mention restarting your Mac.
Disable plug-ins in Safari / Preferences - Security. See if that helps.
Check Safari / Preferences - Extensions.
Occasionally it crashes
Post a crash log so we can try and help if emptying the cache and history trail / plugins / Extensions aren't the issue.
If Safari has just crashed, press the Report button on the CrashReporter dialog box to view the crash information.
Now copy/paste the entire contents of the Crash Reporter window into your reply here. If the crash report dialog does not appear or the crash is hard to reproduce, crash logs can be retrieved from the ~/Library/Logs/CrashReporter> folder.
Carolyn
Message was edited by: Carolyn -
Memory leak with large files and this code?
Okay, so the following code will not complete.
Basically what I am doing is opening 5 files and generating a PDF document from the already opened Report file, which is renewed prior to the PDF export operation. I left out the general stuff at the start. I am also writing out the location of the PDF to a HTML file, which acts as an index of the exported PDF documents.
I believe it is due to some sort of memory leak issue, but it could be something else or just my code. I have not stepped through this code, but for small file sizes of say less than 40 megs per file, it works fine. For file sizes along these lines:
File 1 = 230 megs
File 2,3 = 26 megs
File 4,5 = 8 megs
it will belch erors at the end of about the 5th iteration through the For loop. It will complete the 5th iteration however. Here are the errors generated:
84 10/26/2006 9:35:15 AM Error:
85 File handle for "W:\TR-2051-2100\TR-2060 - BAS Arctic PTC\Vnom\00-99\VnomCombined00-99\p1.TDM" file is invalid.
(Error no. 6)
86 10/26/2006 9:40:19 AM Error:
87 File handle for "W:\TR-2051-2100\TR-2060 - BAS Arctic PTC\Vnom\00-99\VnomCombined00-99\p2.TDM" file is invalid.
(Error no. 6)
88 10/26/2006 9:45:17 AM Error:
89 File handle for "W:\TR-2051-2100\TR-2060 - BAS Arctic PTC\Vnom\00-99\VnomCombined00-99\p3.TDM" file is invalid.
(Error no. 6)
90 10/26/2006 9:53:07 AM Error:
91 File handle for "W:\TR-2051-2100\TR-2060 - BAS Arctic PTC\Vnom\00-99\VnomCombined00-99\p8.TDM" file is invalid.
(Error no. 6)
92 10/26/2006 10:00:39 AM Error:
93 File handle for "W:\TR-2051-2100\TR-2060 - BAS Arctic PTC\Vnom\00-99\VnomCombined00-99\p9.TDM" file is invalid.
(Error no. 6)
94 10/26/2006 10:01:01 AM Error:Error occured during file creation.
95 10/26/2006 10:01:01 AM Error:
Error in <GM315 Pa...sing.VBS> (Line: 185, Column: 5):
File handle for "W:\TR-2051-2100\TR-2060 - BAS Arctic PTC\Vnom\00-99\VnomCombined00-99\p1.TDM" file is invalid.
(Error no. 6)
For files of a larger size, like:
File 1 = 7500 megs
File 2,3 = 80 megs
File 4,5 = 25 megs
This occurs after about 2-3 iterations through the loop.
see attachment for code.
Attachments:
ForLoopCode.txt 11 KBi am having a similar error randomly inserted in the log
25 10/1/2009 1:58:36 PM Error:
26 File handle for "C:\Program Files\Summitek\Spartan\data\tdm\S Parameter Test $SSN$ 49.TDMS" file is invalid.
(Error no. 6)
and
31 10/1/2009 1:58:37 PM Error:
32 File handle for "C:\Program Files\Summitek\Spartan\www\temp\Test_$SSN$ 49_602313172.pdf" file is invalid.
(Error no. 6)
it doesn't seem to be causing an immediate problem, but i have had several unexplained Diadem lockups.
they occur in log after i use CALL DATAFILELOADSEL and CALL PICpdfexport
help? what does this mean
jim -
Memory Leak when just launched and Idle.. fixes when being used ?? [HELP]
So I'm in the debugging and testing phase of my app and using this tool for tracking memory leaks ( https://github.com/mrdoob/Hi-ReS-Stats )
When I launch my app my numbers are
FPS: 61/60
MS: 17
MEM: 3.157
MAX: 3.157
Now immediately my memory starts increasing from 3.157, 3.167, 3.177, 3.187, 3.197 and so on.
Now if I make any nav selection in my app
MEM changes back down to about 3.215
but then it starts its count again 3.215, 3.225, 3.235, 3.445, 3.455
I don't have any loops happening.
Has anyone run in to this ?
I'm almost tempted to force garbage collection every 60 seconds that the app is idle or something. Not the best way to handle this .. I just dont know where the leak is happening.
Any support is appreciated!
Cheers!Hi there - I just had the same query a couple of days ago (http://forums.adobe.com/thread/977174?tstart=30).
I saw the same symptoms on my app so I built a blank app with just the profiler on stage. I've been monitoring it for a few days now and notice that memory does creep up even when the app is left idle (apart from the profiler) - but ... and this is the important bit ... it does periodically get reduced back to the starting point (when the garbage collector kicks in and memory is released).
When I was monitoring my app the time through this cycle could be well over 5 mins.
If you actually use the monitor when putting your app through it's paces you'll see memory being gobbled up more rapidly and hopefully (if you've no leaks) the garbage collection kicking in more regularly and bringing the reported usage back down. -
Memory Leak/Track Pad/Mouse and Headphone Jack
Help-
I have a Macbook with the intel core duo. 4 GB of RAM.
Context.
Computer is used as a media server. Stereo is connected via an optical link from the headphone jack to an external digital to audio converter. Music is stored on external 1 TB My book. Computer is left on and idle for extended periods of time.
Problem:
As the computer is left idle, the trackpad/mouse become increasingly unresponsive. Eventually they stop responding all together. Un-responsive means they jump and can not be maneuvered around the screen in smooth movements. System fan begins to run as this problem gets worse and system monitor indicates memory continuing to be consumed despite no applications running other than startup apps. ---*When the optical jack is removed from the headphone jack this problem disappears*--- and the system returns to normal.
Please help. I specifically purchased the macbook to serve as the platform for this media server and leaving it running for extended periods of time with no use is normal for me. Having the computer lock up because I have the optical headphone jack plugged in is unsat.
Thanks -
Hudi also made a topic about this, i'm not sure if you're still watching it, but I found the solution by coincidence when playing around on youtube.
http://jp.youtube.com/watch?v=iAQ79JT0agY&feature=related
"Discovered it was an issue with the headset jack. Something was triggering the digital audio jack inside. Simply cleaned the jacks and everything started to work again."
I didn't mention earlier that when i left my headset connected, the volume icon in the menubar would go up and down in short intervals (similar to the youtube clip) Even though I can't understand how, this must have been the issue, as I just cleaned the jack, and the problem is gone. Hope this helps you as well! -
I'm having a problem with a LR gallery I've exported. it shows fine as a flash gallery in safari but not as a html gallery, background colours are wrong (brown instead of blue), and the images are not displayed properly (image is too big for rectangle it is displayed and there are no scroll bars).
this is not a problem in firefox.
Can peeps check the gallery for me please and advise on what's happening?
thanks
... oh the galleries are here:
flash http://www.ba-joseph.co.uk/flashgallery/index.html
html http://www.ba-joseph.co.uk/gallery/index.html
thanks again.Ok, I'm posting my test results in case anyone is curious (I still am!):
http://www.madamexpod.com/lightshows/LS_sample01/index.html -
Exported from Lightroom yesterday. Remains mangled in different ways on Safari, IE, FIrefox and Camino on my end, though others in this thread say it works for them.
http://www.madamexpod.com/lightshows/LS_sample02/index.html -
Identical gallery, exported from Lightroom today (no changes). Works on Safari, is mangled on IE (shows up as only one cell with one thumbnail, then gets all goofy when trying to view the full size image), works on FIrefox and Camino
http://www.madamexpod.com/lightshows/LS_sample03/index.html -
Identical gallery, exported from Lightroom moments ago (no changes). Identical results to sample02 above.
So, for some unknown reason, sample01 is mangled for me. All of my galleries are mangled on IE but now they work on other browsers.
One more request: anyone want to try any/all of these on IE? That seems to be the weakest point here.
Huge thanks for all interested and helping!
Jeff -
Safari and web mail crash upon opening....ahhh!!! help please
Every time I click on safari or mail the window opens and closes immediately. I did an update on Thursday and this just started today. Help!!???
Try doing a hard reboot
1. hold the power and home buttons down
2. you will see the "swipe to turn off" screen come up... KEEP HOLDING THE BUTTONS
3. The screen will go black (turn off)... KEEP HOLDING THE BUTTONS
4. A white Apple logo will appear on the screen, now you can release the buttons. Let the iDevice boot... should only take a couple minutes. -
Marshelling Web Service Response Memory Leak
I believe I have found a memory leak when using the configuration below.
The memory leak occurs when calling a web service. When the web service function is marshelling the response of the function call, an "500 Internal Server Error ... java.lang.OutOfMemoryError" is returned from OC4J. This error may be seen via the TCP Packet Monitor in JDeveloper.
Unfortunately no exception dump is outputted to the OC4J log.
Configuration:
Windows 2000 with 1 gig ram
JDeveloper 9.0.5.2 with JAX/RPC extension installed
OC4J 10.0.3
Sun JVM version 1.4.2_03-b02
To demonstrate the error I created a simple web service and client. See below the client and web service function that demonstrates it.
The web service is made up of a single function called "queryTestOutput".
It returns an object of class "TestOutputQueryResult" which contains an int and an array.
The function call accepts a one int input parameter which is used to vary the size of array in the returned object.
For small int (less than 100). Web service function returns successfully.
For larger int and depending on the size of memory configuration when OC4J is launched,
the OutOfMemoryError is returned.
The package "ws_issue.service" contains the web service.
I used the Generate JAX-RPC proxy to build the client (found in package "ws_issue.client"). Package "types" was
also created by Generate JAX-RPC proxy.
To test the web service call execute the class runClient. Vary the int "atestValue" until error is returned.
I have tried this with all three encodings: RPC/Encoded, RPC/Literal, Document/Literal. They have the
same issue.
The OutOfMemory Error is raised fairly consistently using the java settings -Xms386m -Xmx386m for OC4J when 750 is specified for the input parameter.
I also noticed that when 600 is specified, the client seems to hang. According to the TCP Packet Monitor,
the response is returned. But, the client seems unable to unmarshal the message.
** file runClient.java
// -- this client is using Document/Literal
package ws_issue.client;
public class runClient
public runClient()
* @param args
* Test out the web service
* Play with the atestValue variable to until exception
public static void main(String[] args)
//runClient runClient = new runClient();
long startTime;
int atestValue = 1;
atestValue = 2;
//atestValue = 105; // last one to work with default memory settings in oc4j
//atestValue = 106; // out of memory error as seen in TCP Packet Monitor
// fails with default memory settings in oc4j
//atestValue = 600; // hangs client (TCP Packet Monitor shows response)
// when oc4j memory sessions are -Xms386m -Xmx386m
atestValue = 750; // out of memory error as seen in TCP Packet Monitor
// when oc4j memory sessions are -Xms386m -Xmx386m
try
startTime = System.currentTimeMillis();
Ws_issueInterface ws = (Ws_issueInterface) (new Ws_issue_Impl().getWs_issueInterfacePort());
System.out.println("Time to obtain port: " + (System.currentTimeMillis() - startTime) );
// call the web service function
startTime = System.currentTimeMillis();
types.QueryTestOutputResponse qr = ws.queryTestOutput(new types.QueryTestOutput(atestValue));
System.out.println("Time to call queryTestOutput: " + (System.currentTimeMillis() - startTime) );
startTime = System.currentTimeMillis();
types.TestOutputQueryResult r = qr.getResult();
System.out.println("Time to call getresult: " + (System.currentTimeMillis() - startTime) );
System.out.println("records returned: " + r.getRecordsReturned());
for (int i = 0; i<atestValue; i++)
types.TestOutput t = r.getTestOutputResults();
System.out.println(t.getTestGroup() + ", " + t.getUnitNumber());
catch (Exception e)
e.printStackTrace();
** file wsmain.java
package ws_issue.service;
import java.rmi.RemoteException;
import javax.xml.rpc.ServiceException;
import javax.xml.rpc.server.ServiceLifecycle;
public class wsmain implements ServiceLifecycle, ws_issueInterface
public wsmain()
public void init (Object p0) throws ServiceException
public void destroy ()
System.out.println("inside ws destroy");
* create an element of the array with some hardcoded values
private TestOutput createTestOutput(int cnt)
TestOutput t = new TestOutput();
t.setComments("here are some comments");
t.setConfigRevisionNo("1");
t.setItemNumber("123123123");
t.setItemRevision("arev" + cnt);
t.setTestGroup(cnt);
t.setTestedItemNumber("123123123");
t.setTestedItemRevision("arev" + cnt);
t.setTestResult("testResult");
t.setSoftwareVersion("version");
t.setTestConditions("conditions");
t.setStageName("world's a stage");
t.setTestMode("Test");
t.setTestName("test name");
t.setUnitNumber("UnitNumber"+cnt);
return t;
* Web service function that is called
* Create recCnt number of "records" to be returned
public TestOutputQueryResult queryTestOutput (int recCnt) throws java.rmi.RemoteException
System.out.println("Inside web service function queryTestOutput");
TestOutputQueryResult r = new TestOutputQueryResult();
TestOutput TOArray[] = new TestOutput[recCnt];
for (int i = 0; i< recCnt; i++)
TOArray = createTestOutput(i);
r.setRecordsReturned(recCnt);
r.setTestOutputResults(TOArray);
System.out.println("End of web service function call");
return r;
* @param args
public static void main(String[] args)
wsmain wsmain = new wsmain();
int aval = 5;
try
TestOutputQueryResult r = wsmain.queryTestOutput(aval);
for (int i = 0; i<aval; i++)
TestOutput t = r.getTestOutputResults();
System.out.println(t.getTestGroup() + ", " + t.getUnitNumber());
catch (Exception e)
e.printStackTrace();
** file ws_issueInterface.java
package ws_issue.service;
import java.rmi.Remote;
import java.rmi.RemoteException;
public interface ws_issueInterface extends java.rmi.Remote
public TestOutputQueryResult queryTestOutput (int recCnt) throws java.rmi.RemoteException;
** file TestOutputQueryResult.java
package ws_issue.service;
public class TestOutputQueryResult
private long recordsReturned;
private TestOutput[] testOutputResults;
public TestOutputQueryResult()
public long getRecordsReturned()
return recordsReturned;
public void setRecordsReturned(long recordsReturned)
this.recordsReturned = recordsReturned;
public TestOutput[] getTestOutputResults()
return testOutputResults;
public void setTestOutputResults(TestOutput[] testOutputResults)
this.testOutputResults = testOutputResults;
** file TestOutput.java
package ws_issue.service;
public class TestOutput
private String itemNumber;
private String itemRevision;
private String configRevisionNo;
private String testName;
private String testConditions;
private String stageName;
private String testedItemNumber;
private String testedItemRevision;
private String unitNumber;
private String testStation;
private String testResult;
private String softwareVersion;
private String operatorID;
private String testDate; // to be datetime
private String comments;
private int testGroup;
private String testMode;
public TestOutput()
public String getComments()
return comments;
public void setComments(String comments)
this.comments = comments;
public String getConfigRevisionNo()
return configRevisionNo;
public void setConfigRevisionNo(String configRevisionNo)
this.configRevisionNo = configRevisionNo;
public String getItemNumber()
return itemNumber;
public void setItemNumber(String itemNumber)
this.itemNumber = itemNumber;
public String getItemRevision()
return itemRevision;
public void setItemRevision(String itemRevision)
this.itemRevision = itemRevision;
public String getOperatorID()
return operatorID;
public void setOperatorID(String operatorID)
this.operatorID = operatorID;
public String getSoftwareVersion()
return softwareVersion;
public void setSoftwareVersion(String softwareVersion)
this.softwareVersion = softwareVersion;
public String getStageName()
return stageName;
public void setStageName(String stageName)
this.stageName = stageName;
public String getTestConditions()
return testConditions;
public void setTestConditions(String testConditions)
this.testConditions = testConditions;
public String getTestDate()
return testDate;
public void setTestDate(String testDate)
this.testDate = testDate;
public String getTestName()
return testName;
public void setTestName(String testName)
this.testName = testName;
public String getTestResult()
return testResult;
public void setTestResult(String testResult)
this.testResult = testResult;
public String getTestStation()
return testStation;
public void setTestStation(String testStation)
this.testStation = testStation;
public String getTestedItemNumber()
return testedItemNumber;
public void setTestedItemNumber(String testedItemNumber)
this.testedItemNumber = testedItemNumber;
public String getTestedItemRevision()
return testedItemRevision;
public void setTestedItemRevision(String testedItemRevision)
this.testedItemRevision = testedItemRevision;
public String getUnitNumber()
return unitNumber;
public void setUnitNumber(String unitNumber)
this.unitNumber = unitNumber;
public int getTestGroup()
return testGroup;
public void setTestGroup(int testGroup)
this.testGroup = testGroup;
public String getTestMode()
return testMode;
public void setTestMode(String testMode)
this.testMode = testMode;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 -
Clearing CACHE and Web Previews in Safari 4.0.3???
I had a problem where an old page was loading in a window of Safari and it was because the cache page was loading, not the real, new updated page. (Discovered by opening in FireFox...)
Now I see that in /users/myname/Library/Caches there are 2 folders related to Safari and each had over 500 mb of stuff: One is com.apple.Safari and then the folder web pages preview; the other is the folder Safari in that same Caches folder. I used the command EMPTY CACHE in Safari, but it seems all these hundreds of files were still there.
Any way to have them periodically (or upon startup of Safari or the Mac) automatically deleted?
Any 'danger' to do this?
Thanks for comments!Greetings,
Caches cannot be emptied automatically, nor can Web Page Previews, which is used for the Top Sites and Cover Flow features in Safari. You can empty those folders, but Web Page Previews will simply be refreshed with new images as you browse.
If you don't want to use the Top Sites or Cover Flow features in Safari 4.0.3, you can disable it completely, and then you could empty those folders (com.apple.Safari and Web Page Previews) and then Lock the folders so any cache files from browsing would be deleted when you quit Safari. -
Hello all,
I'm not sure whether this post should be here or in WebLogic section, so correct me if I'm wrong.
I'm working on JDeveloper 11.1.1.3 while deployments are made on standalone WebLogic 10.3.3. This thing occurred in previous versions also.
With every deployment WebLogic increases it's used memory until the famous PermGen space error, which is after about 5-6 deployments.
I'm doing my best to understand how to use memleak detection tools. I've switched JDev and WL from Sun jdk which was used before to JRockit, same thing happens. Both JDev's memory profiler and JRockit mission control show something that I really do not understand. char[] uses around 30% of heap space and keeps growing with deployments, next is String with 8%. I never use char in app.
Am I looking at the wrong thing? Is it normal for char[] to increase on WebLogic on deployments? Does anyone know how to check other things and what to check? Someone on other forums mentioned it would be useful to check if ApplicationContext keeps initializing over again on deployments. Does anyone know how to check this?
One more thing, I have successfully deployed app on Tomcat, and Tomcat said there is a memory leak in app, but could not tell anything specific.
I'm kinda lost in this :(It is normal for the PermGen space of the Sun's JVM to get filled after several re-deployments. PermGen stands for "permanent generational". This space is used by classes that is unlikely to need to be garbage-collected, so they are placed in this memory space that is never garbage-collected (for example, the Class instances). When you redeploy an application, a new class loader instance is used and it instantiates new Class instances that fill up the PermGen space. But why this happens on JRockit either, I could not explain.
We have experienced memory leaks related to classes and components that use native memory. For example, we have had significant memory leak when using Oracle's JDBC OCI driver. We were not able to solve this problem, so we switched to JDBC Thin driver (which is very performant and stable today comparing to some years ago). If you are using Oracle JRockit, you can monitor the overall memory usage by the following JRockit command executed at OS command line:
jrcmd <jrockit_pid> print_memusage>where <jrockit_pid> should be replaced by the JVM process ID.
If you suspect existence of native memory leaks, then have a look at the article Thanks for the memory for explanations about how Java uses native memory.
Dimitar -
WARNING TDMS memory leak in LV 2010
Hopefully this will save someone the headache that I've been through the last couple of days. I have a very large applicaiton that is running a final verification test on a production line. In my testing I noticed a memory leak in the application and after 2 days of debug discovered that the TDMS logging is the culprit. This is very disappointing since I am (I mean was) a huge fan of the TDMS file format and the LabVIEW functions. The attached VI reproduces the leak by checking and unchecking the Memory Leak checkbox. Its a bit ugly but I was just coping and pasting the sections from my application and trying to reproduce the issue. Luckily for me in this particular application I was only writing to the TDMS log files so I was able to eliminate the problem by switching to the gTDMS versions of the write functions. I found these referenced in another post about TDMS memory leak, but in that case the leak was caused by the indexing and the fact that the SAME file was continuously written too over a very long period. As you can see in my case, a log file is opened and closed for each "Test".
gTDMS link
Thanks,
Brian
Brian Gangloff
DataAct Incorporated
Attachments:
TDMS Memory testing.vi 31 KBYongqingYe wrote:
Hi Brian,
I'm one of the developers of TDMS in NI R&D. Well, this is a problem of TDMS which has been complained by some customers. The reason you see the "memory leak" or the memory usage increment is because TDMS needs to bookkeep some information in memory and when you writing more and more data values, the information we keep in memory will keep increasing.
There are some workarounds, gTDMS probably is also one of them, but the original purpose of creating gTDMS is to support writing TDMSs on Linux, Mac and other platforms:
Using "NI_MinimumBufferSize" propertie on channels, you can find the details of the help documentation of TDMS Set Property. It can not eliminate this problem, but would reduce the memory usage significantly. Normally we would set it as 1,000 to 10,000.
From LV 2009, if you writing to the file always with the same layout, like same channels same number of data values, you will not have memory increament.
If you are using LV 2010 and later, you can try to play with TDMS Advanced API, this API will not have any memory increasing problem at all.
Thank you!
Yongqing Ye
NI R&D
Hello Yongqing,
Apparently you did not bother to look at the examples that I provided or read any of the description either. As Hooovahh has already pointed out, INDEXING is NOT the issue. The example writes an array to multiple channels ONE time and then the reference is CLOSED. In the case that does NOT leak, there are multiple waveform arrays written to the file which would require some indexing but the memory does NOT increase. The problem is when an array of strings is written to multiple channels and the reference is CLOSED. Unfortunately this type of quick assumption about the problem is why the real issue was overlooked back in 2009.
Thanks,
Brian
Brian Gangloff
DataAct Incorporated -
ListOfValues Cancel button creates memory leak
I believe one nuance of the listOfValues element (in an LOV page) gives rise to a memory leak. The examples and listOfValues documentation shows storing data needed by listOfValues events in the session. This is all fine and good if the user clicks on the "Select" button, as you get both a lovSelect and lovUpdate event to work with and clean out session data. But in the case of a user clicking the "Cancel" button, no event is fired, nor is a forward to another DataAction done. The window is simply closed. This strands all the data for the LOV (which could be quite sizable) in the user's session. You can't send this data on the request, because the LOV data must exist across several requests.
Am I completely missing something? How does one clean out a user's session when the Cancel button is clicked on a listOfValues component?
BradI am using JDeveloper 9.0.5.2. The restrictions of the project prevent using a newer version of JDeveloper. I am using ADF/Struts, and pure UIX (no JSPS).
The functionality I am speaking of is the standard behavior of the <listOfValues> component (lov for short). The lov component generates events for various behaviors (lovFilter, lovUpdate, loveSelect, etc.). It also completely encapsulates the Cancel and Select buttons, so you have no direct access to those. In order to manage an lov web page (presumably launched from an <lovInput> component on a previous page), the events need access to a certain collection of data (data for the table, max size, starting row, selection, validity, etc.). Because use of the lov page will result in potentially multiple submits, the request is not a good place to store this data, as the data needs to persist for the life of the lov page.
If you look at some of the lovInput/listOfValues examples on the OTN, you'll see that this data is persisted in the user's session. In and of itself, this is fine.
The problem is introduced by the fact that the lov's Cancel button (or window close) does not generate any events, and you don't have direct access to those controls to add an event of your own. When the cancel button is clicked, the window just closes, and in the words of the lov documentation "no other events occur."
This is very problematic -- your session is still stuffed full of data to support the lov. I am looking for a way to remove that data.
Frank -- in your post, you say:
"why can't you add an event to clean the session from the data?"
If you know how to add such an event -- one that fires when the Cancel button is clicked, please enlighten me. I would greatly appreciate it!
Thanks,
Brad -
JBoss EAP 6 On JRockit - Memory Leak
hello team.
I have memory leak problem on jboss and jrockit.
My Environment :
1. OS :
CentOS release 6.4 (Final)
2. JRockit :
java version "1.6.0_45"
Java(TM) SE Runtime Environment (build 1.6.0_45-b06)
Oracle JRockit(R) (build R28.2.7-7-155314-1.6.0_45-20130329-0641-linux-x86_64, compiled mode)
3. Application Server:
JBoss EAP 6.2.0.GA
4. Application
Large EJB Application (100 and more EJB Beans (Stateless, Stateful, MDB, Timers and so on)
Everything works fine on older application server versions (4.3 , 4.2)
But now I have Problem
Of course I know that problem is new version - and i have discussion on JBoss forums.
but guys I have question about jrockit with you:
What is the option "Other" in memory ??
[jboss@jboss-new bin]$ jrcmd 17114 print_memusage
17114:
Total mapped 8457864KB (reserved=2983100KB)
- Java heap 3145728KB (reserved=0KB)
- GC tables 105232KB
- Thread stacks 46412KB (#threads=138)
- Compiled code 1048576KB (used=12257KB)
- Internal 1480KB
- OS 170324KB
- Other 3639056KB
- Classblocks 10496KB (malloced=9631KB #28393)
- Java class data 289536KB (malloced=192391KB #133697 in 28393 classes)
- Native memory tracking 1024KB (malloced=294KB #10)
[jboss@jboss-new bin]$
This size increases every time - and took entire amount of RAM.
Thank in Advance.
Regards,
Paata LominadzeNot sure what the 'other' is, but it is probably best shown by using an example. By using displayMap we can display a memory map of various JVM subsystems and libraries that are loaded, including third-party libraries.
./jrcmd 4523 print_memusage displayMap
Total mapped 3984796KB (reserved=2978740KB)
- Java heap 524288KB (reserved=0KB)
- GC tables 17548KB
- Thread stacks 20276KB (#threads=39)
- Compiled code 1048576KB (used=14224KB)
- Internal 1672KB
- OS 146924KB
- Other 2092648KB
- Classblocks 7424KB (malloced=7381KB #20064)
- Java class data 124416KB (malloced=124411KB #91048 in 20064 classes)
- Native memory tracking 1024KB (malloced=118KB #10)
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
OS *java r x 0x0000000000400000.( 76KB)
OS *java rw 0x0000000000612000.( 4KB)
OS *[heap] rw 0x00000000007c1000.( 132KB)
INT Poll r 0x000000007fffe000 ( 4KB)
INT Membar rw 0x000000007ffff000.( 4KB)
MSP Classblocks (1/2) rw 0x00000000df8c0000 ( 6912KB)
MSP Classblocks (2/2) rw 0x00000000dff80000 ( 512KB)
HEAP Java heap rw 0x00000000e0000000.( 524288KB)
OS *ld-2.12.so r x 0x0000003664400000.( 128KB)
OS *ld-2.12.so r 0x000000366461f000 ( 4KB)
OS *ld-2.12.so rw 0x0000003664620000 ( 4KB)
OS **ld-2.12.so rw 0x0000003664621000.( 4KB)
OS *gconv-modules.cache r 0x00007f8f2e4a0000 ( 28KB)
THREAD Stack 4630 rwx 0x00007f8f2e4a7000 ( 8KB)
THREAD Stack 4630 0x00007f8f2e4a9000 ( 12KB)
THREAD Stack 4630 rwx 0x00007f8f2e4ac000 ( 244KB)
MSP Java class data (5/37) rw 0x00007f8f2e4e9000 ( 14336KB)
MSP Java class data (9/37) rw 0x00007f8f2fa40000 ( 5888KB)
rw 0x00007f8f30000000 ( 188KB)
0x00007f8f3002f000 ( 65348KB)
rw 0x00007f8f34000000 ( 132KB)
0x00007f8f34021000 ( 65404KB)
rw 0x00007f8f38000000 ( 412KB)
0x00007f8f38067000.( 65124KB)
MSP Java class data (10/37) rw 0x00007f8f3c034000 ( 34048KB)
rw 0x00007f8f3e174000 ( 8200KB)
MSP Java class data (11/37) rw 0x00007f8f3e976000 ( 256KB)
OS *libhpi.so rw 0x00007f8fb37fc000 ( 8KB)
OS **libhpi.so rw 0x00007f8fb37fe000 ( 4KB)
CODE Compiled code rwx 0x00007f8fb37ff000 ( 64KB)
CODE Compiled code rwx 0x00007f8fb380f000 ( 128KB)
CODE Compiled code rwx 0x00007f8fb382f000 ( 64KB)
MSP Java class data (37/37) rw 0x00007f8ff83a1000 ( 512KB)
GC Modified Union Set (committed) rw 0x00007f8ff8421000 ( 132KB)
GC Card table rw 0x00007f8ff8442000 ( 1024KB)
GC Object bits (committed) rw 0x00007f8ff8542000 ( 8196KB)
Here
- thread is thread related (such as thread stacks)
- int, internal use (such as pointer pages)
- heap, chunk used by JRockit for the Java heap
- os, mapped directly from the operating system, such as third party DLLs or shared objects
- msp, memory space. a memory space is a native heap with a specific purpose, for example native memory allocation inside the JVM
- gc, garbage collection related, for example live bits
- code, compiled code
The 'other' memory space looks to me (from the blank entries in the above print-out) like they are a memory pages to are still not used. When the JVM starts it mappes an amount of memory. To my knowledge JRockit uses mmap (mmap(2) - Linux manual page), which creates a new mapping in the virtual address space. JRockit reserves an amount of memory (Java Heap (heap where your object instances go) + its own runtime (all the others)).
To see where the growth is in the various memory spaces, you can use 'print_memusage baseline', after which you can execute print_memusage again, for example,
./jrcmd 4523 print_memusage scale=M
4523:
Total mapped 3896MB +4MB (reserved=2905MB -3MB)
- Java heap 512MB (reserved=0MB)
- GC tables 17MB
- Thread stacks 19MB (#threads=39)
- Compiled code 1024MB (used=14MB +1MB)
- Internal 1MB
- OS 143MB
- Other 2043MB
- Classblocks 7MB (malloced=7MB #20596 +532)
- Java class data 126MB +4MB (malloced=125MB +4MB #93640 +2592 in 20596 classes)
- Native memory tracking 1MB (malloced=0MB #20 +10)
Note the additional column that prints out the difference in memory usage in relation to the baseline. You can also monitor native allocations by using trace_alloc_sites, memory allocations can then be displayed with different levels of detail using the level argument.
./jrcmd 4523 print_memusage trace_alloc_sites=true
4523:
Total mapped 3989660KB +4864KB (reserved=2974732KB -4008KB)
- Java heap 524288KB (reserved=0KB)
- GC tables 17548KB
- Thread stacks 20276KB (#threads=39)
- Compiled code 1048576KB (used=15265KB +1040KB)
- Internal 1672KB
- OS 146924KB
- Other 2092648KB
- Classblocks 7680KB +256KB (malloced=7669KB +287KB #20596 +532)
- Java class data 129024KB +4608KB (malloced=128967KB +4555KB #93640 +2592 in 20596 classes)
- Native memory tracking 1024KB (malloced=236KB +118KB #20 +10)
./jrcmd 4523 print_memusage level=3
4523:
Total mapped 3989660KB +4864KB (reserved=2974732KB -4008KB)
- Java heap 524288KB (reserved=0KB)
- GC tables 17548KB
- Thread stacks 20276KB (#threads=39)
- Compiled code 1048576KB (used=15265KB +1040KB)
- Internal 1672KB
- OS 146924KB
- Other 2092648KB
- Classblocks 7680KB +256KB (malloced=2KB -7379KB #4 -20060) Not fully traced
- Java class data 129024KB +4608KB (malloced=26KB -124385KB #16 -91032 in 20596 classes) Not fully traced.
- Native memory tracking 1024KB (malloced=118KB #10) Not fully traced.
gather_memorymap_database memtrace.c: 206 91KB +91KB (#1 +1)
gather_memory_usage osal_mspace.c:5142 7KB +7KB (#4 +4)
msGatherMSpacesUsageDatabase osal_mspace.c:6128 2KB +2KB (#1 +1)
msGatherMSpacesUsageDatabase osal_mspace.c:6134 16KB +16KB (#1 +1)
Note this is more on the JVM level, in your case in might be beneficial to investigate what is happening on the java heap. By using print_object_summary you can get insight how memory on the heap is used on a per-class basis. To get to the bottom of where the memory leak is you can use the memory-leak-detector (an example of its use can be found here Middleware Snippets: Fast, Faster, JRockit). You can also obtain a heapdump that can be analyzed by using for example MAT (see for an example here Middleware Snippets: Visualizing Class Loading). To obtain a heapdump you can run the command, for example,
[weblogic@machine1 bin]$ ./jrcmd 4523 runsystemgc full=true fullcompact=true
4523:
[weblogic@machine1 bin]$ ./jrcmd 4523 hprofdump filename=/home/weblogic/dump.hprof
4523:
Wrote dump to /home/weblogic/dump.hprof
Note that this first issues a full GC by using the runsystemgc command.
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