Initial state of the page is a bit disturbing

[markpundsack]

Basically I load http://log2viz.herokuapp.com/app/dashboard and see utilization and throughput as being really low, then wait a bit and watch the numbers climb as you get more data. Perhaps you should either not display any data until you've got enough, or make your calculations based on the amount of time you do have. i.e. extrapolate 10 seconds into a 60s number.