Direct I/O

Direct I/O (Input/Output) is a method that allows a computer program to read and write data directly to storage devices, bypassing the operating system's cache. This means data is transferred straight between the program and the disk, reducing overhead and improving performance for large or frequent data operations. It is often used in high-performance applications like databases or data processing systems to optimize speed and efficiency, ensuring the data handling is more predictable and tailored for demanding workloads.