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Know how to fix kernel_task CPU usage issue on your MacBook.

kernel_task

What is kernel_task?

kernel_task manages the temperature of your CPU which limits its resources to applications that is using it intensively. The CPU usage will decrease as soon as kernel_task reduces its activity.

Why did it happen?

  • The CPU fan is dirty, dusty or the exhaust is blocked. Have a compressed air blown on air vents to clean out your fans.

    NOTE: Dust removal and other hardware-related issue is best done by experts. If you are not familiar with the hardware of your Mac, it is best to bring it to the Apple Service Center near your area.

  • You work on a hot environment. Use your Mac in a cool and well-ventilated area.

What should I do next?

  1. Quit all open windows and applications open in the background.
  2. Remove all external connections.
  3. Reboot your computer.

Reset SMC and NVRAM

If your Mac is still running slow after reboot, try to reset the System Management Controller (SMC) and the Nonvolatile random-access memory (NVRAM).

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Cleaner One is an all-in-one disk cleaning app with an easy-to-use interface so you can effortlessly visualize, manage and free up your storage space to keep your Mac optimized for the best performance. Download Cleaner One now.

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