IBM WebSphere 6.1.17 Memory Leak

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Help please clear point about memory allocation using WebSphere.

On our server, we consider min and max size for JVM as 256 Mb. Starting our application on WebSphere Application (and the java process arise to about 700 Mb) and running JMeter Tests. For some reasons the memory of java process has became to rise constantly, although the JVM memory don't exceed his 256Mb.

Questions:

1) What happens in this process?

2) How I can profile process? Because in standard way, profiling watching me only JVM threads.

Sincerely,
Bogdan Nechyporenko

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Posted By: acierto at May 19 2009 9:05AM

Not sure what you are lookiing at. Can you give more information about what data you are seeing?

Also - are you on a 32-bit platform? What is your -Xms and -Xmx set to?

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Posted By: cathy at May 21 2009 11:17PM

The constant increase of memory usage could be a memory leak in native heap (instead of the java heap) or simply OS behavior (if you were look at physical memroy usage through windows task manager).

You can make sure this is a memory leak by continue running the load to see if there would be a OOM in the end. If so, most possibly be a native memory leak, then you can refer to the following to analysis the reason:
www-01.ibm.com/support/docview.wss?rs=18...

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Posted By: los.wangliang at May 22 2009 2:34AM

We're using 64-bit 1.5 JDK and 64-bit Web Sphere.
Xms=256 and Xmx=512

When our application working in Windows platform we haven't any problem with it, but in Linux it is exists.

Our hack was in limiting WebSphere's process of virtual memory.
But it isn't clear why the memory bloating with any evident reasons.

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Posted By: acierto at May 22 2009 3:57PM

IBM WebSphere 6 1 17 Memory Leak

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I have a C code file that a memory leak prevails possibly because of something in a bitBlt command. How do I change the lines with the bitBlt command so that the memory leak will disappear and the game will run smoothly?

I will provide a sample of the bitBlt command lines in the next `test`.`post` so that it would be clearer to understand.

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Posted By: Leduck at Jun 10 2009 10:24PM

Leduck, can you `test`.`post` your sample of the command as you mentioned? Thnx in advance.

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Posted By: acierto at Aug 30 2009 7:37AM