This screenshot shows the Automatic Storage Management Performance page in Enterprise Manager.
In this screenshot, there are line graphs showing Response Time and Throughput for the ASM instance. The lines in graphs are identified by disk group.
The graph for Response Time uses MS per Operation as the vertical component.
The graph for Throughput uses MB per Second as the vertical component.
The are View and Refresh options in pull down lists.
There is a Refresh button for manually refreshing the page.