One Minute Evaluations for 11-13 November

CS 505 - Operating Systems Concepts

1. Got: Memory management, paging, best fit, etc.

   Didn't get: Temporal locality.

   One minute response: If an event occurs and then re-occurs a short time later, that's temporal locality..

2. Got: Paging is similar to overlaying except page sizes are small and of equal size.

   Didn't get: The concept of temporal locality.

   One minute response: If an address is accessed, spatial locality suggests it will be accessed again, but it doesn't suggest when. Temporal locality suggests it will be accessed soon after it was last accessed.

3. Got: Paging and assorted virtual memory techniques.

   Didn't get: What is the responsibility of the HW (vague). How hardware handles memory.

   One minute response: Hardware is responsible for virtual-to-physical address mapping and rasing page-fault interrupts; the os is responsible for maintaining the virtual-to-physical address map and responding to the page-fault interrupts by moving pages into and out of physical store.

This page last modified on 11 November 2002.