Elapsed time differs after you reconnect to a running application
If you reconnect to an application that has been running for some time, the elapsed time that is shown on the x-axis can differ between graphs.
For example, if you reconnect to an application that has been running for 4 hours, the Heap and pause times view in the Garbage Collection perspective shows the elapsed time starting from 4 hours, but the views in the Threads and Native memory perspectives show the elapsed time starting from 0. This behavior is because Health Center starts collecting some data, such as trace points, when you start the application, and other data, for example native memory and thread information, when you connect to the application.