PowerShell benchmarking function. Or, the Windows equivalent of Unix's `time` command.

time.ps1

function Measure-ExecutionTime ($cmd) {
<#
.SYNOPSIS
  Runs the given script block and returns the execution duration.
  Discovered on StackOverflow. http://stackoverflow.com/questions/3513650/timing-a-commands-execution-in-powershell
  
.EXAMPLE
  Measure-ExecutionTime { ping -n 1 google.com }
#>
  $sw = [Diagnostics.Stopwatch]::StartNew()
  & $cmd
  $sw.Stop()
  $sw.Elapsed.ToString()
}