RE: Memory leaking when using CrystalReportViewer in an MDI applicatio
- From: stcheng@xxxxxxxxxxxxxxxxxxxx (Steven Cheng[MSFT])
- Date: Tue, 17 Oct 2006 02:26:02 GMT
Hello Rowland,
As for the MDI application, have you tested the same MDI form without that
crystalreportviewer control to see whether it has the same memory consume
behavior?
Based on my experience, for memory issue in .net managed application, we
need to determine whether the leak is in managed part or in native code. To
verify this , you need to inspect two performance counters:
** Process---- Private Bytes
** .NET CLR Memory --- Bytes in All Heaps
Managed memory is included in the Private Bytes counter, so Private Bytes
will rise whether your leak is managed or native. Incidentally this is why
one can not determine whether a leak is managed or native from monitor
Task's VMSize(VMsize only represents Private Bytes).
When you check the two counters in perfmon, if the two counters
diverge(meaning Private Bytes increase and #Bytes In All Heaps stay
relatively flat), then the leak is a native one. If the two counters show
the same rising trend, t hen root cause of at least some of the leak is in
managed code.
You can verify this first. Also, if the problem does be specific to the
crystal reportviewer, I would suggest you post in the crystal specific
forum to get further assistance.
http://support.microsoft.com/kb/100368/en-us
Sincerely,
Steven Cheng
Microsoft MSDN Online Support Lead
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