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Why is it that System Monitor and other CPU monitors indicate that my CPU is 100% busy when running CPU Cool?

April 26, 2017busy cool CPU indicate monitor monitors running system

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Why is it that System Monitor and other CPU monitors indicate that my CPU is 100% busy when running CPU Cool?

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That happens because these monitors only detect that a certain percentage of the CPU isn’t being used when it’s idle. CPU Cool replaces this idle mode with a suspend mode generated by the HLT instructions. Therefore, these monitors will always show that your CPU is 100% busy. There’s no fix for this unless someone releases a patch for these monitors. Please use CPU Cool to see the CPU Usage, because it’s more precise than other detecting programs.