Issue
In some scenarios, an application instance may lack monitoring data for a period of time, as shown in the following figure.
Solution
Check whether the process where the ARMS agent and application reside has encountered restart timeouts or full garbage collections (GCs).
In the Related Events section of the Application Overview page, check whether the following events have occurred:
Container restart event
Agent start event of the ECS instance
On the Application Details page, select the application instance. On the JVM monitoring tab, check whether full GCs exist in the period of time.