dotnet / runtime

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.
https://docs.microsoft.com/dotnet/core/
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.NET 9 mono debugger much slower #109980

Open Stuart88 opened 2 days ago

Stuart88 commented 2 days ago

Is there an existing issue for this?

Describe the bug

Sorry, not sure if this is a bug, performance issue or is perhaps expected as it's currently in preview.

I've just upgrade my Blazor project to .NET 9.

Trying the .NET 9 mono debugger, it's markedly slower, to the point that it's unusable.

See examples:

Without .NET 9 Mono Debugger

https://github.com/user-attachments/assets/a587ac3c-51c2-41ee-a8e7-41da054f9d30

With .NET 9 Mono Debugger

https://github.com/user-attachments/assets/820b170b-9217-4836-b795-51c856a979c5

Expected Behavior

No response

Steps To Reproduce

No response

Exceptions (if any)

No response

.NET Version

.NET 9.0.100

Anything else?

No response

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