How to Trace and Analyze Events › Analyze Trace Results › About Transaction Trace View › Tree View

Tree View

The Tree View is a hierarchical view of the amount of time each transaction event performs the task.

Note: For the back-end traces generated by the CA APM Cross-Enterprise agent on z/OS, the tree view does not represent an actual call stack.

The Transaction traces consist of a series of CICS and IMS components.

CICS components

Transaction Lifetime

The total time or transaction lifetime that equals the sum of input, processing, and output time.

Dispatch Time

Dispatch Time is a child of Transaction Lifetime and contains the CPU time for the total amount of CPU usage. The CPU time is the portion of dispatch time when the task is using processor cycles.

Program Load Time

Program load time is a child of dispatch time that shows how long the program took to load.

Suspend Time

Suspend Time accompanies Dispatch Time and it represents time that is wasted in waiting for system resources.

Suspend time has extra child components representing non-overlapping timings.

Suspend Time also includes various overlapping timings that cannot be represented as a hierarchy. These timings are represented as properties in the lower pane of the Trace View tab.

Note: High suspend times on a running transaction indicates an issue.

Note: Zero duration timing properties and components are not presented.

For more information, see CICS Transaction Lifetime Properties and CICS Suspend Time Properties.

IMS Components

Transaction Lifetime

The total time or transaction lifetime equals the sum of input, processing, and output time which are its child components.

Input Queue Time

The amount of time the input transaction waited in the message queue before being scheduled.

Process Time

Process Time has extra child components representing non-overlapping timing events. These optional components are IMS Monitor type events such as, IWAITs, DL/1 and External Subsystem calls that occur during the transaction lifetime.

A single optional child component that contains properties for Event Count and Maximum Event Time represent multiple events. The Event Count property indicates the number of events. The Maximum Event Time property has the duration of the slowest instance of the event.

Output Queue Time

The amount of time the transaction output waited in the output message queue before being forwarded to its destination.

For more information, see IMS Transaction Lifetime Properties.