98 Maximum Performance with WebSphere Application Server V5.1 on iSeries
4.3.3 Performance Tools for iSeries
The Performance Tools for iSeries LPP includes tools for collecting data about the
performance on a system, job, or program level. It also includes tools to print reports and
graphics from the collected data to help you identify and correct performance-related
problems. Some commonly used features are outlined in the following sections.
CRTPFRDTA command
Run the CRTPFRDTA command to create a set of database files from the performance
information that is stored in a management collection (*MGTCOL) object. You can learn more
about the database files in the iSeries Information Center, under Systems Management
Performance:
http://publib.boulder.ibm.com/pubs/html/as400/v5r1/ic2924/index.htm
To create the database files, see 4.3.2, “Creating performance data” on page 96.
DSPPFRDTA command
The DSPPFRDTA command presents general information about the data collection and
provides a summary of the performance statistics. You can use this command to analyze data
that is collected from any iSeries server. Figure 4-88 shows an example of the Display
Performance Data screen.
Figure 4-88 DSPPFRDTA example
Reports
Based on the data collected on the system, Performance Tools for iSeries provides two sets
of reports. From the sample data, you can generate the following reports:
System report
Component report
Display Performance Data
Member . . . . . . . . TAKETHREE F4 for list
Library . . . . . . QPFREDBOOK
Elapsed time . . . : 01:05:04 Version . . . . . : 5
System . . . . . . : AS05 Release . . . . . : 1.0
Start date . . . . : 10/25/66 Model . . . . . . : 270
Start time . . . . : 20:00:02 Serial number . . : 10-12345
Partition ID . . . : 00 Feature Code . . . : 23F5-2434-1520
QPFRADJ . . . . . : 0 QDYNPTYSCD . . . . : 1
QDYNPTYADJ . . . . : 1
CPU utilization (priority) . . . . . . . . . . . : .00
CPU utilization (other) . . . . . . . . . . . . : 77.61
Job count . . . . . . . . . . . . . . . . . . . : 222
Transaction count . . . . . . . . . . . . . . . : 24
Transactions per hour . . . . . . . . . . . . . : 22
Average response (seconds) . . . . . . . . . . . : .01
Disk utilization (percent) . . . . . . . . . . . : 3.35
Disk I/O per second . . . . . . . . . . . . . . : 638.8
Logical DB I/O for DDM jobs . . . . . . . . . . : 0
F3=Exit F4=Prompt F5=Refresh F6=Display all jobs F10=Command entry
F12=Cancel F24=More keys

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