Powershell Script - list process with cpu, memory, disk usage

Question

I want to filter my output. If I get the result of the following script. How I can result specifix process? - here my proprosal, but it doesent work:

Function Get-CPUProcess
{ 
$properties=@(
    @{Name="Name"; Expression = {$_.name}},
    @{Name="PID"; Expression = {$_.IDProcess}},
    @{Name="CPU (%)"; Expression = {$_.PercentProcessorTime}},
    @{Name="Memory (MB)"; Expression = {[Math]::Round(($_.workingSetPrivate / 1mb),2)}}
    @{Name="Disk (MB)"; Expression = {[Math]::Round(($_.IODataOperationsPersec / 1mb),2)}}
    @{Name="Path";Expression = {(Get-Process -Id $_.IDProcess).Path}}
)
$ProcessCPU = Get-WmiObject -class Win32_PerfFormattedData_PerfProc_Process |
    Select-Object $properties |
    Sort-Object "CPU (%)" -desc |
    Select-Object -First 5 |
    Format-Table -AutoSize
    $ProcessCPU
}
Get-CPUProcess -Filter {processname -like "firefox*"} | select * | Out-File C:filename.txt

Answer 1

Naive approach would look like:

$properties=@(
    @{Name="Name"; Expression = {$_.name}},
    @{Name="PID"; Expression = {$_.IDProcess}},
    @{Name="CPU (%)"; Expression = {$_.PercentProcessorTime}},
    @{Name="Memory (MB)"; Expression = {[Math]::Round(($_.workingSetPrivate / 1mb),2)}}
    @{Name="Disk (MB)"; Expression = {[Math]::Round(($_.IODataOperationsPersec / 1mb),2)}}
    @{Name="Path";Expression = {(Get-Process -Id $_.IDProcess).Path}}
)
$ProcessCPU = Get-WmiObject -class Win32_PerfFormattedData_PerfProc_Process |
    Select-Object $properties |
    Sort-Object "CPU (%)" -desc |
    Select-Object -First 5 |
    Format-Table -AutoSize
    $ProcessCPU

If performance is crucial, join Get-Process after selecting top 5 items:

$properties=@(
    @{Name="Name"; Expression = {$_.name}},
    @{Name="PID"; Expression = {$_.IDProcess}},
    @{Name="CPU (%)"; Expression = {$_.PercentProcessorTime}},
    @{Name="Memory (MB)"; Expression = {[Math]::Round(($_.workingSetPrivate / 1mb),2)}}
    @{Name="Disk (MB)"; Expression = {[Math]::Round(($_.IODataOperationsPersec / 1mb),2)}}
)
$ProcessCPU = Get-WmiObject -class Win32_PerfFormattedData_PerfProc_Process |
    Select-Object $properties |
    Sort-Object "CPU (%)" -desc |
    Select-Object -First 5
$ProcessCPU | select *,@{Name="Path";Expression = {(Get-Process -Id $_.PID).Path}} | Format-Table