The Summary page is the homepage for each environment.
Top 5 Queries by Total Time: Across all of the selected hosts, these are the top five queries by total time (the sum of every individual query’s latency).
Application Overview:: Total operating system metrics (CPU, network, and disk) and total database metrics (total time, average latency, total query count, and total errors) for the selected hosts.
Top Queries That Might Need an Index: Among the top 20 queries (by total time), these are the most time consuming queries which the database reported as not using an index.
Critical Events: A list of any critical-level events which took place.