Stopwatches!

When playing with code to try and streamline the process I often add a stopwatch to the logging
These are started:

$stopwatch=[system.diagnostics.stopwatch]::startNew()

Stopped:

$stopwatch.Stop()

(optional) Restarted:

$stopwatch.Restart()

Using these through the loggin process can highlight where loops can be improved on or commands take longer than usual (ie timeouts)

Write-Output "Lab took $($stopwatch.elapsed.minutes)m:$($stopwatch.elapsed.seconds)s:$($stopwatch.elapsed.Milliseconds)ms to build"

More on the stopwatch class https://msdn.microsoft.com/en-us/library/system.diagnostics.stopwatch(v=vs.110).aspx