The summary tab is intended to provide an "MBA" level view, or a perspective of what Heimdall is doing from a business perspective. It provides the overall last hour, day, week and cumulative perspectives, and allows a comparison of with and without Heimdall performance.

It should be noted that the with and without Heimdall is based on caching, although caching can skew the numbers of "without heimdall" to be better or worse based on what is being cached and what queries continue to execute on the server. As such, these numbers are simply rough estimates, but are as accurate as they can be made while actually caching the data.