Summary: Use Windows PowerShell to show easily how long a process runs.
You need to find how long a particular process has been running. How can you easily do this with Windows PowerShell?
Use the New-TimeSpan cmdlet and specify the –Start parameter as the results from Get-Process on a process and the StartTime property. This is shown here using Notepad as an example.
PS C:\> New-TimeSpan -Start (get-process notepad).StartTime
Days : 0
Hours : 6
Minutes : 53
Seconds : 54
Milliseconds : 55
Ticks : 248340555164
TotalDays : 0.287431198106481
TotalHours : 6.89834875455556
TotalMinutes : 413.900925273333
TotalSeconds : 24834.0555164
TotalMilliseconds : 24834055.5164