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c#xmlperformancexml-serialization

Xml serializer very slow for unknown reason

I experience a very strange behaviour of my application. We are working with xml based data which is persisted as xml into files. For unknown reasons the deserialization suddenly is very slow and I tried to figure out what the problem is.

I had a look at the performance of a file which is has 6MB of size. I logged the deserialization time from the point where the deserialization starts:

  • whithin our main application it takes about 6 seconds
  • using the exact same deserialization code in a sample application takes 168ms

Both using the same .net framework version. I do not understand why it performs that slow. I also did a trace and discovered that the issue is really the .net code:

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I can reproduce this very reliably over and over again.

What am I missing?

Solution

  • I have found the issue:

    There is some code called within the property setter of the classes which is only executed when the system is initialized correctly.