It takes the monitored process and divides it by the number of Logical Processors on the machine.īy doing so, it's possible to display values in a similar way to values presented in Task Manager. To properly calculate the processor utilization for NetCrunch when we measure it on a multi-core machine, we have added a Calculated Counter named: Process\Normalized Processor Usage which is used to measure utilization for processes. If a test machine has 4 logical processors, utilization of the processor will be 400% at max. So depending on how many cores are in the machine, the value of processor utilization can even be 400% (for a 4 core processor) The reason Perfmon shows more than 100% is because of the way it was designed.įor Perfmon, one core (logical processor) of the processor might be utilized from 0 to 100% and it shows the total utilization of all cores. On the other hand, Windows Task Manager shows a more "reasonable" value of 50%. Perfmon shows ~200% - which may look illogical, because processor utilization cannot be more than 100%. As presented on the screen above, the processor utilization of the same Windows process is monitored in Perfmon and Task Manager.
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