23.9 Summary
You should now be familiar with the following concepts:
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The measurements of performance:
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Response Times
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Resource Utilization
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System throughput
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Scalability
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Understanding the importance of repeatablitiy and ability to re-create problems in assessing impacts of changes.
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Understanding the impact of tuning of z/OS subsystems to the overall performance of WebSphere on z/OS.
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Estimating the impact of various topologies on performance.
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Assessing the health of the JVM and garbage collection.
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Using the monitoring tools for WebSphere and z/OS and know which apply to different types of problems.
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Selecting the front-end topology that best meets your needs for performance, reliability, and simplicity.