How to find the cause of StreamAsIStream leak

alexbusteed

I am writing a mixed WPF / Winforms application and find that when I create a new WPF view and present it using ElementHost, that two 5.04 MB byte[] objects are created on the Large Object Heap and are never disposed.

Using ANTS Memory Profiler 5.2, I see the object retention graph for these as showing:

System.Byte[] (the object in question) System.IO.MemoryStream System.Windows.Media.StreamAsIStream GC Handle

I have filtered using "Kept in memory only by GC roots of type: COM+ (all other types were unticked).

According to other posts (e.g http://www.red-gate.com/MessageBoard/viewtopic.php?t=9521) this points at a native leak. But... I'm not sure how to progress.

Can anyone advise on how I can identify the source of the leak?

Many thanks
Alex

nick.maidment

I just sent you an email, please let me know if you get it.

mustangchik83

I'm running into the same issue - 2 objects with the same retention graph:

System.Byte[] (the object in question)
System.IO.MemoryStream
System.Windows.Media.StreamAsIStream
GC Handle

Both are gray indicating that dispose has been called. Together, they are taking up a whopping 5MB of memory. How can I track this further?

Thanks,
rachel

AndyCombes

I am also having this problem.

WinForms application hosting a WPF application, leaking 2-3Mb byte arrays via the same retention graph.

Has anybody shed any light on this yet?

nick.maidment

It would probably be worth emailing your results to support @ red-gate . com for further analysis