Mojave kernel_task high increase over time

tommiy · 11-25-2018, 09:00 AM

So its been 4 weeks since I posted originally. Over this time I've actually used displaylink drivers 3 days a week and during this time on Mojave 14.1 the kernel task cpu utilisation has increased from 2% to 20% on average. Today I tried reseting the SMC and PRAM but this made no difference. If I uninstall Displaylink kernel task utilisation returns to 1 or 2%. Reinstall Displaylink and it raised to 6-8%. So I guess this is the sequence every 4 weeks....uninstall and reinstall to reduce the load on the MAC. I know when its had it as the fan comes on a lot more than it should.

tommiy · 12-22-2018, 10:22 PM

Seems this is a regular monthly task with DL drivers. Responses are consistent 100% of the time. There is not much else installed on the MAC other than Office and Omnigraffle so I doubt its a problem there. If you have lag or slow down issues then you may want to check how much CPU kernel task is taking and if over about 10% on average go through uninstalling and reinstalling DL.

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11-25-2018, 09:00 AM	#1
tommiy Member Join Date: Mar 2018 Posts: 92	So its been 4 weeks since I posted originally. Over this time I've actually used displaylink drivers 3 days a week and during this time on Mojave 14.1 the kernel task cpu utilisation has increased from 2% to 20% on average. Today I tried reseting the SMC and PRAM but this made no difference. If I uninstall Displaylink kernel task utilisation returns to 1 or 2%. Reinstall Displaylink and it raised to 6-8%. So I guess this is the sequence every 4 weeks....uninstall and reinstall to reduce the load on the MAC. I know when its had it as the fan comes on a lot more than it should.

12-22-2018, 10:22 PM	#2
tommiy Member Join Date: Mar 2018 Posts: 92	Seems this is a regular monthly task with DL drivers. Responses are consistent 100% of the time. There is not much else installed on the MAC other than Office and Omnigraffle so I doubt its a problem there. If you have lag or slow down issues then you may want to check how much CPU kernel task is taking and if over about 10% on average go through uninstalling and reinstalling DL.