I have one project using VS 2012 when I try to run the visual studio “Start Performance Analysis”: a message for profiling is not available.
I managed to start the profiler earlier, but I don’t remember if I changed any settings.
thank
You are probably trying to use Visual Studio's profiling tools. For Windows Phone applications, you must use the profiler that ships with the SDK.
You can access it through Debug> Start Windows Phone Application Analysis.
Debug
Start Windows Phone Application Analysis