hi i want make a ouput or cpu meter like this 
Take a look at this tutorial: https://docs.juce.com/master/tutorial_audio_device_manager.html#tutorial_audio_device_manager_cpu_usage
That shows how to gather CPU usage data. The GUI/graphic part is up to you, it can be done in a lot of ways, you can have some ideas from VU meters done by other users here (take a look at forum)
can i also use it for synth this class
In a synth you have at least 2 threads: audio thread (only audio processing, no memory allocations or gui stuff there) and main thread (messages & user interface like buttons, sliders…). You can have this in the GUI thread, a really simple example: you poll the CPU usage with a timer (every X miliseconds), and use that data to set a vertical slider position. Once you got that working you can make your own graphics or slider the way you want it to look
Making 4 identical posts won’t get your question answered any faster. Please be patient and don’t spam the forum.
I’m closing this topic and leaving the latest one open here:
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