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Chapter 1. Introduction > 1.5 Transaction Processing Performance

1.5 Transaction Processing Performance

Performance is a critical aspect of TP systems. No one likes waiting more than a few seconds for an automated teller machine to dispense cash or for a hotel web site to accept a reservation request. So response time to end-users is one important measure of TP system performance. Companies that rely on TP systems, such as banks, airlines, and commercial web sites, also want to get the most transaction throughput for the money they invest in a TP system. They also care about system scalability; that is, how much they can grow their system as their business grows.

It’s very challenging to configure a TP system to meet response time and throughput requirements at minimum cost. It requires choosing the number of systems, how much storage capacity they’ll have, which processing and database functions are assigned to each system, and how the systems are connected to displays and to each other. Even if you know the performance of the component products being assembled, it’s hard to predict how the overall system will perform. Therefore, users and vendors implement benchmarks to obtain guidance on how to configure systems and to compare competing products.


  

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