MeasureCallstackPenalty.ps1

function target {
  param($Caller = $((Get-PSCallStack)[0].Command))

  "'$Caller' called!"
}

function volunteerID {
  target -Caller $MyInvocation.MyCommand
}

function callstackID {
  target
}

$volunteerMeasure = Measure-Command {
    1..10000 |ForEach-Object { volunteerID }
}
Write-Host "Caller passes ID explicitly: " -Foreground Cyan
Write-Host ("  {0}" -f $volunteerMeasure)
Write-Host 
$callstackMeasure = Measure-Command {
    1..10000 |ForEach-Object { callstackID }
}
Write-Host "Callee unwinds callstack: " -Foreground Cyan
Write-Host ("  {0}" -f $callstackMeasure)
Write-Host