CPU usage extremely high on TS deployment

Question

Hi,

Our application is written in .NET (framework 3.5). We are experiencing problems with the applications performance when deployed in a terminal services environment. The client is using a TS farm. They have 4GB ram and a decent xeon processor.

When the application is opened in this environment, it sits at 25% CPU usage even when idle. When deployed in a normal client - server environment, it behaves normally, spiking the CPU usage when necessary and drops down to 0 when idle.

Does anyone have any ideas what could be causing this? Or, what I could do to investigate? We have no memory leaks that we can find using performance profiling tools.

Answer 1

Well, there are a few questions before we can really get you too far.

1. Is this a Console Application? WinForms Application? or Windows Service?
2. Do you have a Terminal Services environment available?
3. What does your application do?

Depending on what the application does, you might check to see if there is unusually high activity on their hardware that you have not accounted for. Examples that I have noticed in the past are items such as having a FileSystemWatcher accidentally listening to a "drop location" for reporting on a client server. Things of that nature, items that while "idle" shouldn't be busy, but are.

Otherwise, if you have the ability to do so, you could also use a tool such as ANTS Profiler from RedGate to see WHAT is using the CPU time on the environment.