IBM SG24-6526-00 manual Hardware

5.1 Hardware

When you tune your configuration and system for performance, always start with the hardware requirements for the configuration. For applications that use Enterprise JavaBeans (EJBs), as both call.connect and vendor.connect do, you must be running one of the following models with the corresponding feature code:

￿Model 170 feature 2385

￿Model 720 feature 2062

￿Model 270 feature 2252

￿Model 820 feature 2396

For all models, we recommend that you meet the minimum memory requirement of 1 GB.

To check the processor model and feature and the memory of your iSeries, use the following command:

WRKHDWRSC *PRC

Then the Work with Processor Resources display (Figure 5-1) appears. In this example, the model is shown against the resource CEC01. The feature is against MP01. You may need to add multiple memory cards. If necessary, page down to see the complete list. The system shown is a Model 170, with feature 2385 and 2 GB of memory. This satisfies the processor requirements and more than satisfies the memory requirements.

Figure 5-1 Work with Processor Resources display

You can also check the model by using the Display System Value (DSPSYSVAL QMODEL) command and check the processor feature by using the DSPSYSVAL QPRCFEAT command. To check the memory, use the Work with System Status (WRKSYSSTS) command, but be sure to add the memory pools.

These requirements are simple, although they give no indication about how older models may perform. In addition, they do not provide any information about how the level of usage affects the requirements.

iSeries performance is usually measured by an IBM benchmark called Commercial Processing Workload (CPW). It is interesting to look at the CPW of the systems mentioned earlier in this section:

￿Model 170 feature 2385 Processor CPW 460 Interactive CPW 50

￿Model 720 feature 2062 Processor CPW 420 Interactive CPW 35

108Geac System21 commerce.connect: Implementation on the iSeries Server