UI hangs when UI thread is free, and Composition Thread is busy

Question

Hi all,

I have created a application, which is all about media(Photos). Where I get 1000s of photos. I am doing some database operations inside Task.Run and downloading images, and assigning stream on UI thread.

When I did profililing app, I found that my app is not responding when UI Thread is free, and Composition Thread is busy.

Please check below profililing screenshot:

Please advice me what to do?

Thanks

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Pallam Madhukar Windows Phone Developer

Answer 1

Hi Pallam,

Please check if you forgot to add await key word to some async method in Task.Run method. This will cause the thread hangs.

I cannot say any other reason if you don’t post some code. If you still have questions about this issue, please upload code snippet or repro project to help reproduce.

Regards,

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Answer 2

Is something in Composition thread invoke to UI thread ? 

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