Performance is an important factor to consider when choosing a web framework, as it affects the scalability and responsiveness of your application. However, there is no definitive answer to which framework is faster or more efficient, as it depends on many variables, such as the design of your application, the hardware and software environment, the optimization techniques, and the benchmarking tools. Generally speaking, Spring has a higher memory footprint and startup time than Struts, due to its complex and modular structure. However, Spring also has more features and mechanisms to improve the performance of your application, such as caching, transaction management, and concurrency control. Struts, on the other hand, has a lower memory footprint and startup time than Spring, but it also has less flexibility and control over the performance aspects of your application.