iSeries Performance Management Update
Performance Capacity Planning for iSeries
Gottfried Schimunek, IBM

January 20th, 2004 FASUG Meeting

Analytical tools for performance capacity planning were available as part of the performance tools LP on iSeries (and before on AS/400) for many years and were based on real time measurements of transactions and corresponding resource usage. Extrapolations done with these tools are extremely precise since measured data are directly fed into the extrapolation model. Also real application code pathlength and speeds and feeds of hardware and operating system code is used to determine resource utilization and response time ratings. This presentation will demonstrate how to use a new tool for the iSeries which operates on the very same basis, but is much easier to use and produces better and more attractive charts and graphs then previous tools. We will go through "what if" scenarios and demonstrate the impact of various hard and software options to throughput and response times.

We will also discuss the differences between the approaches for sizing and capacity planning and share recommendations when to use what tool. Please join this presentation if you are the responsible person to ensure good and stable response times for your iSeries server.

Gottfried Schimunek is a Consulting Information Technology Architect with IBM and has been taking a lead role in application and product development projects for over 25 years. Currently he is the Program Manager for the Technology Review Board (TRB) in the eServer Solutions Enablement team in Rochester, Minnesota. His primary interests are performance measurement, analysis and capacity planning of applications. Gottfried is a frequent presenter at customer, user group, and technical conferences around the world. He helps IBM Business Partners and Independent Software Vendors (ISVs) understand how to bring the power of e-business to build a secure, trusted set of applications to improve their revenue, avoid costs, and improve customer services. His particular emphasis is on utilization of existing application systems in an e-business environment. You can contact him at

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