Get-Counter返回一个Microsoft.PowerShell.Commands.GetCounter.PerformanceCounterSampleSet类型的数组，因此必须按如下方式处理它：
一个更通用的解决方案：

$sampleInterval = 60 # in seconds
$samples = 50 # samples taken
$inRowSamples = 5 # 5 samples in a row
$shouldntExceed = 0.95 # 95%

$values = get-counter -Counter "\Processor(_Total)\% Processor Time" -SampleInterval $sampleInterval -MaxSamples $samples

$count = 0
foreach ($value in $values)
{
    if ($value.CounterSamples[0].CookedValue -gt $shouldntExceed)
    {
        $count++;
    }
    else
    {
        $count = 0;
    }

    if ($count -ge $inRowSamples)
    {
        # send email
        break;
    }
}

我觉得你想要这样的东西：

$value = get-counter -Counter "\Processor(_Total)\% Processor Time" -SampleInterval 1 -MaxSamples 5
$Total = $Value | % { $_.CounterSamples[0].CookedValue } | Measure -Sum;

if ($Total.Sum -ge 490) {
    # Total CPU usage was 490+
}

或者，如果要在百分比上下文中执行此操作，请执行以下操作：

$value = get-counter -Counter "\Processor(_Total)\% Processor Time" -SampleInterval 1 -MaxSamples 5
$Total = $Value | % { $_.CounterSamples[0].CookedValue } | Measure -Average;

if ($Total.Average -ge 95) {
    # Total CPU usage was 95%+
}

试试这个：

$maxCount = 5;
$maxValue = 100;
$count = 0;
get-counter -Counter "\Processor(_Total)\% Processor Time" -SampleInterval 1 -MaxSamples 5 | %{

    if($_.CounterSamples[0].CookedValue -ge $maxValue){
        $count++;
    }
    #handling the n times in a row condition
    else{
        $count=0
    }
    if($count -eq $maxCount){
        write-host "exceeded"
        #send email
        break
    }

}

由于我们使用的是管道，上面将发送电子邮件，只要你有5个连续的值大于或等于100。