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Editorial Team
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Asked: 2026-05-17T01:25:09+00:00

I have a C# service which listens to a queue for XML messages, receives

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I have a C# service which listens to a queue for XML messages, receives them, processing them using XSLTs and writing them in the database.
It does process about 60K messages a day of about 1Mb each. The memory when is idle is going down to 100MB which is really good.
However recently I have started processing messages of 12 MB in size. It does blow the memory up and even when is idle it has memory of about 500MB. Any suggestions why this might be a problem? I don’t think there is a memory leak as it would have surfaced after processing so many (60K messages of 1MB).

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1 Answer

  1. Editorial Team

    That looks perfectly fine. Why do you think this is a problem?

    The garbage collector will eventually release the unused memory, but this doesn’t mean this is going to happen as soon as your service is idle.

    Raymond Chen has written a good article explaining the basic idea of garbage collection:

    Everybody thinks about garbage collection the wrong way

    However – but this is pure speculation with the information given in your questions – there might be memory leaks related to extension methods in your XSLT. Extension methods may lead to problems in case you recompile the stylesheet every time a new XML document is transformed. The fix is simple: Once compiled, cache the stylesheet.

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