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[Q]Cpu Governors / IO Schedulers question

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Default [Q]Cpu Governors / IO Schedulers question

ive been seeing this kernels with lots of CPU governors and stuff.. but i just wanted to ask do i really need a CPU control app like no-frills or SETCPU to use or switch between these governors? or android does this automatically?
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You need no frills cpu to set cpu govenors

android will automatically scale up and down between the min and max frequency you set depending on the govenors settings
ie performance govenor will keep frequency at max higher boosting phone performance but at a cost of draining the battery alot quicker

full list of governors and what they do can be found by searching

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