Performance management on IBM i

The Performance Explorer is a data collection and reporting tool that helps performance analysts identify the cause of performance problems that cannot be identified by other tools in the IBM i operating system or by most of the reporting facilities in the Performance Tools for IBM i product. The collection function in the Performance Explorer is included in the IBM i operating system. The reporting function is a special advanced type of performance report that is available only through the Performance Tools for IBM i licensed product. Two reasons to use Performance Explorer are:

Performance Explorer can be run in several modes, with each mode providing a different view of performance or a different level of detail. The least detailed mode is called *STATS. It is used to identify applications, programs, or modules that consume the most CPU and perform a large amount of disk I/O operations.

The most detailed mode is called *TRACE which gathers a historical trace of performance activity for one or more jobs and tasks on the system. It provides a way to trace various activities called events that occur when applications are running or system resources are being used. Common trace events include:

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