I feel like I should point out that `Measure-Command {dir C:\}` is just aliasing gci. PS> Measure-Command {Start-Process cmd -ArgumentList '/c dir c:\'}

I feel like I should point out that `Measure-Command {dir C:\}` is just aliasing gci. PS> Measure-Command {Start-Process cmd -ArgumentList '/c dir c:\'} TotalMilliseconds : 14.0138 PS> Measure-Command {gci C:\} TotalMilliseconds : 10.7484 Second run on each of those went down to closer to 40% of each, yay caching. Of course, the start-process is possibly taking up a chunk of time, there. With no measure-command for cmd, it makes it a little harder to gauge.