Kernel_task High CPU usage

[DanCourtenay]

Hi,

Please can anyone help?

I am trying to fix a problem on my MacAir which has caused it to run at a snails pace. I've identified the issue as a kernel_task running sometimes at 300% CPU usage.

Im trying to solve the issue using the following directions:

1. Go to About this mac under the apple in the upper left and click on More info
2. Click on system report
3. make a note of what it says after Model Identifier
4. go to your master drive – System -Library – Extensions – IOPlatformPluginFamily.kext -Contents – Plugins – ACPI_SMC_PlatformPlugin.kext – Contents – Resources – find the name from step 3 and move it to a folder that you can find again if needed.
3. Restart and you’re done
I hope this helps.

The problem is that when i get to theist step with is to remove the model identity from the resources folder, I simply don't find mine which is MacBookAir 6,2.

Can anyone help with this please?

Thanks
Dan

 

[vansmith]

What instructions are you reading that tell you to start moving around kernel extensions? Moving system kernel extensions around is like taking a sledgehammer to solve a problem with a loose screw...

Open up Terminal (/Applications/Utilities), paste the following and press enter:

kextstat -kl | awk '!/com\.apple/{printf "%s %s\n", $6, $7}'

This will report back any non-Apple kernel modules that are loaded. When you get the list, let us know what the list includes.

 

[DanCourtenay]

What instructions are you reading that tell you to start moving around kernel extensions? Moving system kernel extensions around is like taking a sledgehammer to solve a problem with a loose screw...

Open up Terminal (/Applications/Utilities), paste the following and press enter:

kextstat -kl | awk '!/com\.apple/{printf "%s %s\n", $6, $7}'

This will report back any non-Apple kernel modules that are loaded. When you get the list, let us know what the list includes.

Thank you for getting back to me.

Is followed your instructions and this is what' come back to me:

Daniels-MacBook-Air:~ Daniel$ kextstat -kl | awk '!/com\.apple/{printf "%s %s\n", $6, $7}'
com.avast.PacketForwarder (2.0)
com.avast.AvastFileShield (2.1.0)
Daniels-MacBook-Air:~ Daniel$

 

[DanCourtenay]

Thank you for getting back to me.

Is followed your instructions and this is what' come back to me:

Daniels-MacBook-Air:~ Daniel$ kextstat -kl | awk '!/com\.apple/{printf "%s %s\n", $6, $7}'
com.avast.PacketForwarder (2.0)
com.avast.AvastFileShield (2.1.0)
Daniels-MacBook-Air:~ Daniel$

 

[vansmith]

It would appear that you have Avast installed. Remove that (following the official instructions or using the uninstaller) and see if that helps.

 

[harryb2448]

If you have Avast, after uninstalling have a read of this:-


http://www.thesafemac.com/avast-installs-adware/

 

[DanCourtenay]

Thanks to both of you.

I have now uninstalled Avast and while there seems to be a noticeable improvement, there is still a Kernel_Task running at between 2 and 400% CPU usage. Can you help me with any additional fix for this pls?
@vansmith, I placed the code you shared into terminal again to make sure there was nothing still running and nothing now comes back.

 

[harryb2448]

Go into Activity Monitor (Applications > Utilities and see what is actually running