Chapter 10. Performance Modeling: Tools for Predicting Performance
TCA is the scientific method of determining server capacity—establish a hypothesis, and then run an experiment with live hardware and real or projected usage data to determine the validity of your expected result. Using this method, basic capacity planning and real-time evaluation of existing systems can be done with an acceptable degree of certainty. Provided the usage data, hardware, and network resources are available to test, TCA can also be used to anticipate changes in load and cost, and to determine where adjustments can be made in the name of either higher performance or lower financial impact.
When an established server’s load grows to the point where performance is reduced, ...
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