Maximum Performance with WebSphere Application Server V5.1 on iSeries

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