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kernel_task Is protective, not problematic



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Photo by skeeze

Thanks to Howard Oakley for explaining something that has bothered me for years. When the iMac is struggling with a heavy CPU load, its performance suffers and I can hear the fans hitting. Activity Monitor controls often show that a process called kernel_task takes a large percentage of the CPU. I nuts something expressible and hopes that things will soon be resolved, as they usually do. What% $ # * @ ^ can core_task do?

It turns out that kernel_task actually goes in to make the CPU less accessible to other processes that tax the CPU so intensely that they cause the temperature to reach dangerous levels. In other words, kernel_task protects your CPU from overheating and doesn't even cause the problem. When the CPU temperature drops, kernel_task will automatically be backed off so that other processes can resume their activity.

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