Achieving efficient server performance requires a proper balance among server resources. Overusing any resource adversely affects performance. This topic describes the server commands that are available to help you observe the performance of your server.
You can use the iSeries™ Performance Tools licensed program to help analyze your performance. In addition, there are some system commands available to help you observe the performance of your server:
In using them, you should observe server performance during typical levels of activity. For example, statistics gathered when no jobs are running on the server are of little value in assessing server performance. To observe the server performance, complete the following steps:
Press F10 (Restart) to restart the elapsed time counter.
Use both the Work with System Status (WRKSYSSTS) and the Work with Active Jobs (WRKACTJOB) commands when observing the performance of your system. With each observation period, you should examine and evaluate the measures of server performance against the goals you have set.
Some of the typical measures include:
Each time you make tuning adjustments, you should measure and compare all of your main performance measures. Make and evaluate adjustments one at a time.