Operating Systems - Memory Management and File System

These flashcards cover key concepts and terms related to Memory Management and the File System as discussed in the Operating Systems course.

What is the purpose of the Translation Lookaside Buffer (TLB)?

The TLB is used for fast address translation from virtual addresses to physical addresses.

What happens during a TLB miss?

A multi-level page table lookup is invoked to find the physical address.

What are virtually addressed caches designed to improve?

They are designed to improve speed by accessing the cache using virtual addresses before looking up the physical address.

Define a superpage.

A superpage is a set of contiguous pages in physical memory that map to a contiguous region of virtual memory.

What is the primary focus of the lecture stated in the notes?

The primary focus is to discuss Memory Management and introduce the File System.

What will the upcoming Exam 2 cover?

Exam 2 will cover lectures 11-19.

What task will homework 6 key help with?

It will help with reviewing the material covered in previous homework and lectures.

When is Quiz 6 scheduled to take place?

Quiz 6 is scheduled for April 3, 2025.

How does a virtually addressed cache first access memory?

It first accesses the cache using the virtual address and then generates a physical address using the TLB in case of a miss.

What indicates a valid frame in memory?

A valid frame indicates that the corresponding virtual page is currently stored in physical memory.

What operation does the TLB carry out?

The TLB performs a combined operation of checking for virtual addresses against the entries at once.

What does it mean if a virtual address is marked as invalid?

It means that the corresponding data is not currently in physical memory, leading to an exception being raised.