PERF_COUNTER_TIMER

Description This counter type shows the average time that a component is active as a percentage of the total sample time.
Generic type Percentage
Formula (N1 - N0) / (D1 - D0), where the denominator (D) represents the total elapsed time of the sample interval and the numerator (N) represents the portions of the sample interval during which the monitored components were active.
Average (Nx - N0) / (Dx - D0)
Example There are no counters of this type installed with Windows 2000.

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