After my son got his degree in marketing he came to work for our company, which develops products and performs consulting in the z/OS environment. I tried to explain to him the concepts of performance analysis and capacity planning in the z/OS environment using the old methods I was taught when I was young and reading complex reports and documentation that were hard to understand. But our generation gap stood in the way.
I had to look for ways to make complex concepts simple and present them in an understandable way. After working together, we created a simple methodology that will enable my son and clients to analyze these sophisticated z/OS systems—without being a z/OS expert.
Many z/OS performance indicators exist that influence the behaviour of the system which makes it very hard for the expert, especially the beginner who has much less knowhow, to understand and locate the problems. The methodology shows the important performance statistics at a glance, how they are correlated, behave in different periods, provide end-user results as benchmarks for various workloads on each system, and many others. Here are some examples:
All this work had been done thanks to the vast knowledge gathered over the years from different people and graphical tools that help visual them in a simple way.
The final result: People in the company can dedicate more quality time for performance analysis.