Get % of process life that it has consumed CPU

Use as an additional CPU hog identifier along with task manager

Process Lifetime CPU percentage.ps1

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+
+<#
+.SYNOPSIS
+
+Add process property which is the percentage of time that the process has been consuming CPU across it's lifetime.
+
+.DESCRIPTION
+
+Designed to help identify CPU hogs
+
+.PARAMETER process
+
+Process name or pattern to report on. If not specified all processes will be included
+
+.PARAMETER includeUsername
+
+Include the user name owning the process. Must be run as administrator on at least PowerShell version 4
+
+.EXAMPLE
+
+& '.\Process Lifetime CPU percentage.ps1' -includeUsername
+
+Calculate the life time CPU percentage for all processes and include the user name of the process owners (run as admin)
+The results can be piped into Export-CSV or Out-GridView, eg |select id,name,CPU,username,CPULeech,sessionid|sort CPULeech -Descending|ogv
+
+.EXAMPLE
+
+& '.\Process Lifetime CPU percentage.ps1' -process svchost
+
+Calculate the life time CPU percentage for all svchost processes (run as admin)
+
+.NOTES
+
+Modification History:
+
+  30/06/2021  @guyrleech  First public release
+#>
+
+[CmdletBinding()]
+
+Param
+(
+    [string]$process ,
+    [switch]$includeUsername
+)
+
+[hashtable]$getprocessparameters = @{ }
+
+if( $PSBoundParameters[ 'process' ] )
+{
+    $getprocessparameters.Add( 'Name' , $process )
+}
+
+if( $includeUsername )
+{
+    $getprocessparameters.Add( 'includeUsername' , $includeUsername )
+}
+
+## Get average CPU across life of process
+
+[array]$results = @( Get-Process @getprocessparameters -ErrorAction SilentlyContinue | ForEach `
+{
+    $thisProcess = $_
+    if( $thisProcess.StartTime )
+    {
+        Add-Member -InputObject $thisProcess -MemberType NoteProperty -Name 'CPULeech' -Value ( $thisProcess.CPU / (New-TimeSpan -Start $thisProcess.StartTime).TotalSeconds * 100 ) -PassThru
+    }
+    elseif( $thisProcess.Id )
+    {
+        Write-Warning -Message "No start time for $($thisProcess.Name) ($($thisProcess.Id))"
+    }
+})
+
+Write-Verbose -Message "Got $($results.Count) processes"
+
+if( ! $results -or ! $results.Count )
+{
+    Write-Warning -Message "No processes found"
+}
+
+$results
+
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