Question

What is a good approach to reduce latency?

Answer 1

This section describes four techniques to reduce protocol-processing latency. Unlike other optimizations that improve execution speed by reducing the number of instructions executed, these techniques are primarily targeted at reducing the average cost of each instruction. That is, they attempt to reduce the average CPI. The first three techniques rely on the path abstraction, whereas the fourth technique is a purely compiler-based technique that is also aimed at improving predictability of execution time.