Run PowerShell via perfview with PowerShell EventSource sources

Invoke-PerfviewPS.ps1

param(
    $etlFile = '.\perfviewdata.etl',
    $scenario = 'echo 1',
    $logFile = '.\perfview.log')

$perfViewArgs = @(
    '/AcceptEula'
    '/ThreadTime'
    "/LogFile=$logFile"
    "/DataFile:$etlFile"
    '/noRundown'
    '/Merge'
    '/Zip:False'
#    '/ClrEvents=default+GCSampledObjectAllocationHigh'
    '/Providers:*Microsoft-PowerShell-Runspaces,*Microsoft-PowerShell-CommandDiscovery,*Microsoft-PowerShell-Parser,*Microsoft.Windows.PowerShell'
    'run'
    'c:\windows\sysnative\windowspowershell\v1.0\powershell.exe'
    '-nop'
    '-command'
    $scenario
)

$process = Start-Process -FilePath PerfView.exe -ArgumentList $perfViewArgs -PassThru

$rs = [runspacefactory]::CreateRunspace($host)
$rs.Open()
$ps = [powershell]::Create()
$ps.Runspace = $rs

$null = $ps.AddCommand("Get-Content").
    AddArgument($logFile).
    AddParameter("Wait").
    AddParameter("Tail", 0)
$null = $ps.AddCommand("Out-Host")

# If log file doesn't exist yet, wait a little bit so Get-Content doesn't fail
while (!(Test-Path $logFile))
{
    Start-Sleep -Seconds 1
}

$null = $ps.BeginInvoke()
$process.WaitForExit()
$ps.Stop()