After you have collected performance data, learn how to display
the data using the most appropriate tool for your purposes.
Displaying performance data helps you analyze your system's performance
more accurately. Performance data can be displayed in many different ways;
however, you may find a certain performance application more appropriate in
some situations. Most applications display data collected with either Collection
Services or from a performance trace. The best way to access that data depends
on whether you are attempting to resolve a performance problem, are monitoring
your system performance to plan for future growth, or are identifying trends.
Display near real-time performance data
Use the
following tools to display current or very recent performance information:
- i5/OS™ commands
- There are many commands in the base operating system that will let you
view current information about specific areas of system performance.
- Performance Tools plug-in
- The Performance Tools licensed program includes a plug-in for iSeries™ Navigator that displays
performance data from Collection Services collection objects. You can also
view detailed information about the jobs on the system and print Performance
Tools reports.
- System and Job monitor
- These monitors display performance data for many system elements. Monitor
data is based on the collection objects, and will display data as it is collected,
according to the collection interval in Collection Services.
Display historical performance data
Use the following
tools to view data that is stored on your system:
- PM iSeries
- PM iSeries automates
the collection, archival, and analysis of system performance data and returns
clear reports to help you manage system resources and capacity.
- Graph history
- Graph history provides a graphical display of up to a week's worth of
performance data depending on the retention period in Collection Services.
With PM iSeries,
Graph History can display much longer periods of data collection.