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legareal

macrumors member
Original poster
Sep 15, 2016
50
20
Hey all,

Trying to extract as much juice out of this machine as possible but Kernel_Task insists on using at least 200% CPU, are the cores being throttled by the system?

Is this normal behaviour? I would expect something like this on a Macbook Pro but not the Mac Pro with its considerable size and fans...
 

Dybro

macrumors newbie
Jun 21, 2020
1
1
I have the exact same problem with my iMac - kennel_task keep being between 160-800%......
Could it be last update?? I just deleted harddisk and reinstalled, no help
 
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t8er8

macrumors 6502
Dec 4, 2017
252
100
Quebec, Canada
From what I’m aware of, kernel task intentionally makes less of the CPU available while being used intensely so that it can control CPU temp and prevent thermal throttling. Those numbers can be normal sometimes if you are doing high intensity tasks. Use something like macs fan control to see your CPU temperature, macOS notoriously has very poor fan control on its own. Also keep in mind a 16 core mac pro has 32 threads, the full range of CPU usage on activity monitor is 0-3200% usage so in actuality 200 is quite a small fraction.
 
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