由于監控及報告需要，要統計性能計數器每天數值情況，確認數據庫服務器的運行狀況。若打開計數器填寫，比較麻煩，現在統計用 powershell 來讀取計數器的值。
第一階段：Powershell 讀取計數器文件并統計其中一個計數器的值
$startDate = (Get-Date).AddDays(-1).Date
$endDate = (Get-Date).Date
$perfPath = "D:\DataFiles\PERFMON\MSSQL_PERFMON_08240904.blg"
#讀取文件中的計數器名稱
$counterList = Import-Counter -Path $perfPath
$countersNameList = $counterList[0].countersamples | % {$_.path}
#篩選指定計數器和時間重新導入PS
$counter = $countersNameList -like '*Processor Time*'
$counterData = Import-Counter -Path $perfPath -Counter $counter | Where-Object -FilterScript {($_.Timestamp -ge $startDate) -and ($_.Timestamp -lt $endDate)}
#計算日期范圍內的數值統計
$counterInfo = $counterData | Foreach-Object {$_.CounterSamples} | Measure-Object -property CookedValue -Average -Maximum
#哈希表存儲結果數據
$resultTable=@{}
$resultTable."CPU 利用率——平均" = $counterInfo.Average
$resultTable."CPU 利用率——最大" = $counterInfo.Maximum
$resultTable
第二階段：批量統計文件中的所有計數器并導出到文件中
$startDate = (Get-Date).AddDays(-1).Date
$endDate = (Get-Date).Date
$perfPath = "D:\360Downloads\*.blg"
#哈希表存儲結果數據
$resultTable=@{}
#導入指定時間的所有計數器信息
$counterData = Import-Counter -Path $perfPath | Where-Object -FilterScript {($_.Timestamp -ge $startDate) -and ($_.Timestamp -lt $endDate)}
#所有的計數器名字
$countersNameList = $counterData[0].countersamples | % {$_.Path}
#遍歷每個計數器，將計算結果存儲到哈希表中
foreach($counterName in $countersNameList)
{
#$counterName = "\\hzc\system\threads"
$counterDataOne = $counterData | Foreach-Object {$_.CounterSamples} | Where {$_.Path -like $counterName}
$counterInfo = $counterDataOne | Measure-Object CookedValue -Average -Minimum -Maximum
$resultTable.$($counterName+" ：平均值") = $counterInfo.Average
$resultTable.$($counterName+" ：最小值") = $counterInfo.Minimum
$resultTable.$($counterName+" ：最大值") = $counterInfo.Maximum
}
#$resultTable.GetEnumerator() | sort Name | Format-Table -Auto
#幾種方法導出到文件
$resultTable.GetEnumerator() | sort Name | Format-Table -Auto | Out-File "D:\360Downloads\PerfmonCounter.txt"
$resultTable.GetEnumerator() | sort Name | Export-Csv -Path "D:\360Downloads\PerfmonCounter.txt" -Encoding "unicode" -Force
$resultTable.GetEnumerator() | sort Name | Format-List | Export-Csv -Path "D:\360Downloads\PerfmonCounter.xlsx" -Encoding "unicode" -Force
