Computer Science 322
Operating Systems

Mount Holyoke College
Spring 2008

Lecture 07: CPU Scheduling: Multilevel Queues, Multiprocessors, Modern OS Examples
Date: Monday, February 18, 2008

Agenda

Announcements
- Lab 2 continues
Lecture assignment recap
CPU Scheduling
- Multilevel feedback queues and traditional Unix scheduling
- What about systems with multiple CPUs?
  - scaling
  - locking issues
  - processor affinity
  - load balancing
- Examples
  - From the text: Solaris, Win XP, Linux
  - Linux 2.6 O(1) scheduler
  - From McKusick and Neville-Neil: FreeBSD 5.x ULE scheduler

Lecture Assignment

No new lecture assignment - get some work done on your simulations!