Apple OSX - processo Kernel_Task al 200-300% come risolvere

[Max Brezzi]

http://blog.viktorpetersson.com/post/136535061619/how-to-fix-kerneltask-cpu-usage-on-el-capitan

funziona anche con sierra


Step 1: Disable System Integration Protection (SIP)

First, shut down your computer. Then power the computer on and boot it into Recovery Mode by holding down Command + R.

Once the computer is done booting, bring up a Terminal window (Utility -> Terminal). With that done, simply run the following command:

$ csrutil disable
That will disable SIP. In order for this to work, you now need to reboot your computer into regular mode (i.e. not anoter Recover Mode boot).

Step 2: Fix the issue

Once your computer is booted, stara Terminal session and run the following commands (for more information, see the original post:

# Find the model
$ system_profiler -detailLevel mini | grep "Model Identifier:"
Model Identifier: MacBookPro8,2

# Move and backup the file
$ cd /System/Library/Extensions/IOPlatformPluginFamily.kext/Contents/PlugIns/ACPI_SMC_PlatformPlugin.kext/Contents/Resources
$ sudo mv MacBookPro8_2.plist MacBookPro8_2.bak
With that done, it's time to go back into Recover Mode again, so shut down your computer.

Step 3: Re-enable SIP

Boot the computer in Recover Mode again by pressing Command + R on boot. Again, open a Terminal window, but this time, run the following command:

$ csrutil enable
Now reboot your computer and you should be all set.