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PERF_COUNTER_COUNTER

  • Article

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

Description

This counter type shows the average number of operations completed during each second of the sample interval. Counters of this type measure time in ticks of the system clock. The F variable represents the number of ticks per second. The value of F is factored into the equation so that the result can be displayed in seconds.

Generic type

Difference.

Formula

(N1- N0) / ( (D1-D0) / F), where the numerator (N) represents the number of operations performed during the last sample interval, the denominator (D) represents the number of ticks elapsed during the last sample interval, and F is the frequency of the ticks.

Average

(Nx - N0) / ((Dx - D0) / F)

Example

System\File Read Operations/sec