In the realm of high-performance computing and network applications, efficient data handling is important. Traditional Input/Output (I/O) operations often involve redundant data copies, creating performance bottlenecks that can limit throughput and increase latency. Zero-copy is a powerful optimization technique that minimizes or eliminates these unnecessary data movements, leading to significant performance gains.
Traditional Input/Output Path
Consider a common scenario: an application needs to read a file from disk and transmit it over a network. In a traditional I/O model, this seemingly straightforward operation entails a series of data copies: