Script used to collect "Sensu-Client" statistics during defined execution time

Collect-SensuPerfomanceStatistics.ps1

# default ids
$sensuId = (Get-Process sensu-client).id
$rubyId = (gwmi win32_process | ? {$_.ParentProcessId -eq $sensuId}).ProcessId

# define execution in minutes
$initialTime = Get-Date
$execTime = $initialTime + [timespan]"0:05:00"

# create an empty hashtable
$procCount = @{}

# execute script until defined execTime
$result = while ((get-date) -lt $execTime){
    # get inner process ids
    $innerProcIds = (gwmi win32_process | ? {$_.ParentProcessId -eq $rubyId}).ProcessId

    # collect all sensu derived process
    #$procs = gwmi win32_process | 
    #    ? {$_.ProcessId -match "$sensuId|$rubyId|$($innerProcIds -join '|')" -or $_.ParentProcessId -match "$sensuId|$rubyId|$($innerProcIds -join '|')"}
    
    $procs = gwmi Win32_PerfFormattedData_PerfProc_Process | 
    ? {$_.IDProcess -match "$sensuId|$rubyId|$($innerProcIds -join '|')" -or $_.CreatingProcessID -match "$sensuId|$rubyId|$($innerProcIds -join '|')"}

    # list process not yet computed
    $procs | ?{ $procCount[$_.IDProcess] -ne $true } | %{
        $procCount[$_.IDProcess] = $true
        [pscustomobject]@{
            IDProcess = $_.IDProcess
            Name = $_.Name
            WorkingSet = $_.WorkingSet
            "CPU (%)" = $_.PercentProcessorTime
            WorkingSetPrivate = $_.WorkingSetPrivate
        }
    }
}

@{
    InitialTime = $initialTime
    FinishTime = $execTime
    "Total Created Process" = $procCount.Count
    "CPU Average" = (($result."CPU (%)" | measure -Average).Average)
    "Sum_WorkingSet" = "{0:n2}" -f (($result.WorkingSet | measure -sum).sum / 1mb)
    "Sum_WorkingSetPrivate" = "{0:n2}" -f (($result.WorkingSetPrivate | measure -sum).sum / 1mb)
}