Question

I have a C#/WPF application that is meant to run on a small panel PC with 512 MB of memory. If it is left to run, an OutOfMemoryException is eventually thrown. This can take 12+ hours up to 2 days to happen.

Using both ProcessExplorer and .NET Memory Profiler, I see no evidence that the memory used by my application is growing over time. There is just a typical pattern of a little growth followed by garbage collection.

I’ve added code to print out all running processes and their memory information when the exception is thrown. I’m currently just waiting around for it to happen again. I should mention that PCs are flash based and paging is disabled. The 512 is a hard limit.

It has happened on two separate PCs. The exception information was the same in both cases:

Top Level Exception - System.OutOfMemoryException: Insufficient memory to continue the execution of the program.
    at System.Windows.Media.Composition.DUCE+Channel.SendCommand(Byte* pCommandData, Int32 cSize)
    at System.Windows.Media.MediaContext.EnterInterlockedPresentation()
    at System.Windows.Media.MediaContext.ScheduleNextRenderOp(TimeSpan minimumDelay)
    at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)
    at System.Windows.Media.MediaContext.AnimatedRenderMessageHandler(Object resizedCompositionTarget)
    at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)
    at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)

Any insight is appreciated!

Answer 1

It turns out that a variety of issues were causing my application to crash. I’ve detailed them in another post here.