Runtimes
On the Runtimes page, you can view the graphs for monitored KPIs for the selected run-time instances from all the solutions.
In the graph for the Used Memory KPI, the horizontal lines below the graph represent the severity and duration of the alerts that were raised for the KPI. The information alerts are displayed in blue, the warning alerts are in orange, and the critical alerts are in red.
The following table describes the meaning of the alert lines from the example graph for the Used Memory KPI.
| Time Period | Details |
|---|---|
| 1 | Until 2:05 h, there had been an open information alert. |
| 2 | At 2:05 h, the severity of the information alert was changed to warning. |
| 3 | An information alert existed during that period. |
| 4 | A warning alert existed during that period. |
You can change the value in the Solutions drop-down field to load the information about the run-time instances from a specific solution.
You can use the INTEGRATION SERVER, UNIVERSAL MESSAGING, and BIGMEMORY MAX tabs to view the information related to the selected solution and runtime. The different colours in the KPIs depict different cluster instances in the Monitoring screen.
By default, the page displays information for the last 24 hours. To view the information for a different time period, use the time-range selector.
The following table describes the monitored Integration Server KPIs.
| Name | Description |
|---|---|
| Used Memory | The total used memory for the Java™ VM. |
| Service Threads | The number of active service threads. |
| Sessions | The number of active licensed sessions. |
| Stateful Sessions | The number of the current stateful HTTP sessions. |
The following table describes the monitored Universal Messaging KPIs.
| Name | Description |
|---|---|
| Free Memory | The amount of free memory that the Realm Server has within the Java VM. This indicates the difference between what the Java VM has currently allocated and what the Realm Server has used. |
| Published Events | Total number of events published on this realm from the time it started. |
| Subscribed Events | Total number of events that this realm has sent to clients from the time it started. |
The following table describes the monitored Terracotta KPIs.
| Name | Description |
|---|---|
| Off-Heap Used Memory | Shows the amount of off-heap memory that is currently used. |
| Live Objects | Shows the total number of live objects in the cluster, mirror group, server, or clients. If the trend for the total number of live objects goes up continuously, clients in the cluster will eventually run out of memory and applications might fail. Upward trends indicate a problem with application logic, garbage collection, or the tuning of one or more clients. |