Measure actual clock speed via powershell during an intensive task - powershell

Question

I have the following script to measure the current cpu clock rate from this [link][1].
$MaxClockSpeed = (Get-CimInstance CIM_Processor).MaxClockSpeed
$ProcessorPerformance = (Get-Counter -Counter "\Processor Information(_Total)\% Processor Performance").CounterSamples.CookedValue
$CurrentClockSpeed = $MaxClockSpeed*($ProcessorPerformance/100)
I am looking to test the performance of the CPU to see how far it can go in terms of frequency.
The reason for this is that we have a few machines that are faulty out of our hundreds of machines, and it turns out that when you push them a bit, their clock rate doesn't change and stays at around 20% utilization. This would allow us, via our monitoring system, to find them easily.
Is there a way to programmatically via powershell to make an intensive task during or just before capturing the actual clock speed to know how far it can get? Something like a loop or something?
[1]: Unable to get current CPU frequency in Powershell or Python

Answer 1

I found something interesting on this website.
So to make the cpu work at 100% for a short time, I can use a background job:
$NumberOfLogicalProcessors = Get-WmiObject win32_processor | Select-Object -ExpandProperty NumberOfLogicalProcessors
ForEach ($core in 1..$NumberOfLogicalProcessors){
start-job -ScriptBlock{
$result = 1;
foreach ($loopnumber in 1..2147483647){
$result=1;
foreach ($loopnumber1 in 1..2147483647){
$result=1;
foreach($number in 1..2147483647){
$result = $result * $number
}
}
$result
}
}
}
Read-Host "Press any key to exit..."
Stop-Job *
It makes the cpu go usually at 100% of utilization. During that time I can easily run the script:
$MaxClockSpeed = (Get-CimInstance CIM_Processor).MaxClockSpeed
$ProcessorPerformance = (Get-Counter -Counter "\Processor Information(_Total)\% Processor Performance").CounterSamples.CookedValue
$CurrentClockSpeed = $MaxClockSpeed*($ProcessorPerformance/100)
For instance, in my case, when I test the $processorPerformance I get "107.998029830411" as an example, so this shows My processor works fine when I push it.
N.B I must add the Start-sleep -Seconds 20 parameter while the background tasks are running, because on all the machines it takes around 15 seconds until the x logical processors are running at 100%.