wmi - 将 PerfRawData 值转换为执行数据 -WMI

Question

我需要将 PagesPersec 值从 Win32_PerfRawData_PerfOS_Memory 转换为 PerfFormatted Data 值。如何将 PerfRaw 数据值从 WMI 性能计数器转换为 PerfFormatted 数据值。Windows 是否推荐了可用的标准公式。

Answer 1

您需要的公式取决于 CounterType ...请参阅 http://msdn.microsoft.com/en-us/library/aa392761(v=VS.85).aspx

要开始，请查看http://msdn.microsoft.com/en-us/library/aa394597.aspx

Answer 2

在这里回答太长了。有一篇非常好的带有示例的文章http://msdn.microsoft.com/en-us/library/ms974615.aspx

简而言之：这取决于计数器类型。对于某些计数器，我可以只读取（磁盘可用空间）并根据两个请求进行计算，其中一个请求比另一个请求晚一点，例如：

strComputer = "."
Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root\cimv2")
Set colItems = objWMIService.ExecQuery _
    ("Select * From Win32_PerfRawData_PerfOS_Processor Where Name = '0'")
For Each objItem in colItems
    CounterValue1 = objItem.InterruptsPerSec
    TimeValue1 = objItem.TimeStamp_PerfTime
    TimeBase = objItem.Frequency_PerfTime
Next
For i = 1 to 5
    Wscript.Sleep(1000)
    Set colItems = objWMIService.ExecQuery _
       ("Select * From Win32_PerfRawData_PerfOS_Processor Where Name = '0'")
    For Each objItem in colItems
        CounterValue2 = objItem.InterruptsPerSec
        TimeValue2 = objItem.TimeStamp_PerfTime
        If TimeValue2 - TimeValue1 = 0 Then
            Wscript.Echo "Interrupts Per Second = 0"
        Else
            intInterrupts = (CounterValue2 - CounterValue1) / _
                ( (TimeValue2 - TimeValue1) / TimeBase)
            Wscript.Echo "Interrupts Per Second = " & Int(intInterrupts)
        End if
        CounterValue1 = CounterValue2
        TimeValue1 = TimeValue2
    Next
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