Lectures

The course’s lecture content (slides and notes) will be posted here.

Priority inversion
One key issue that comes up in systems with priorities (e.g., RTOS)
Real-time scheduling
More scheduling algorithms, this time specific to real-time systems
I/O buffering
Strategies for buffering I/O data
I/O buses
How I/O devices are connected together
I/O history
How I/O has evolved through the years
CoW filesystems
Copy-on-write filesystems.
FAT filesystem
The venerable FAT filesystem.
File permissions
DAC, MAC and capabilities as applied to file authorization.
Filesystems
The essential elements of [almost] every filesystem.
Page faults
How page faults happen. Common VM policies that are implemented in OS software.
Page tables
Page table structure on practical systems today
Memory management
Segmentation and paging
Scheduling algorithms
Scheduling algorithms and threads.
Scheduling
Scheduling criteria, metrics and design issues.
Process models and scheduling
Simple models of process execution.
Kernel architectures and interrupts
Monolithics vs microkernels. Interrupt handling.
Init systems
Every process' parent's parent's parent's ... parent
Inter-process communication
How processes talk to each other: (named) pipes, FIFOs, sockets, semaphores, message queues and shared memory
Examples:
Shells
Programs that execute commands on command
Examples:
Memory allocation
Requirements, mechanisms and strategies for allocating memory.
Process control
System calls for creating, replacing, terminating and waiting for processes.
Examples:
File abstractions
What is a file? What is a directory? How do we work with them?
Examples:
Processes
An introduction to processes.
Exercises:
History
A brief history of operating systems.
Welcome
Why study operating systems? How will this course work? What do operating systems do?