EECS 1520 Chapter Notes - Chapter 10: User Interface, Application Software, Resource Management

• School: York University
• Department: Electrical Engineering and Computer Science
• Course: EECS 1520
• Professor: John Hofbauer

Document Summary

Os consists of a kernel (computer resources) and a shell (human interface). Resource management consists of: memory management, process management and. : relative to the start of the program. 2 programs are in memory (os and application program. Memory is divided in fixed partitions and created to fit the program in dynamic partitions. The base register holds the beginning address of the current partition. The bounds register holds the length of the current partition. page swap: the act of bringing in a page from secondary memory. Too much swapping is thrashing, and can degrade system performance. Nonpreemptive scheduling occurs when the currently executing process gives up the. Preemptive scheduling occurs when the operating system decides to favour another process, preempting the currently executing process. Turnaround time for a process is the amount of time between when the process arrives in the ready state to the time it exits the running state for the last time.