CST334: Operating Systems, Week 7
Identify the topics we covered in class -- you can start by listing them I/O Devices Hard Drives Files and Directories File Systems (Data) File Systems (Access) Explain what each of the topics were in your own terms -- take the identified topics and add a sentence or two describing them I/O Devices This topic focused on how the operating system interacts with hardware devices in a controlled and efficient way. Devices expose simple interfaces that the OS can read from or write to, and techniques like polling, interrupts, and DMA are used to coordinate work between the CPU and slower hardware. The main takeaway for me was that I/O design is largely about avoiding wasted CPU time while still responding correctly to device events. Hard Drives Hard drives were examined in terms of their physical behavior and performance costs. Breaking disk access down into seek time, rotational delay, and transfer time helped explain why access patterns matter so much. Sequential access being dramati...
