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A page fault is an exception raised by the memory management unit when a process accesses a memory page without proper preparations. Learn about the different types of page faults (minor, major, invalid), how they are handled by the operating system, and how they affect system performance.
Memory Reference Code (MRC) is a part of the BIOS of an Intel motherboard that initializes and adjusts memory timing. Learn how MRC works, what it supports, and how it relates to memory overclocking.
A memory leak is a type of resource leak that occurs when a computer program incorrectly manages memory allocations and memory that is no longer needed is not released. Learn about the consequences, symptoms and programming issues of memory leaks, and see a pseudocode example of a memory leak in an elevator control program.
Memory paging is a technique to store and retrieve data from secondary storage for use in main memory. It is part of virtual memory implementations in modern operating systems, using pages as units of exchange between disk and RAM.
A buffer overflow is an anomaly whereby a program writes data to a buffer beyond its allocated memory, overwriting adjacent memory locations. This can result in erratic program behavior, memory access errors, crashes, or security exploits. Learn how buffer overflows occur, how to prevent them, and how to exploit them.
Memory safety is the state of being protected from software bugs and security vulnerabilities when dealing with memory access. Learn about the types of memory errors, the history of memory safety research and the different approaches to ensure memory safety in various programming languages and environments.
A memory management unit (MMU) is a hardware component that translates virtual memory addresses into physical addresses in main memory. Learn about the functions, benefits and history of MMUs, and how they work with operating systems and paging.
Learn about the methods and challenges of page replacement in operating systems that use paging for virtual memory management. Compare local and global algorithms, detection and precleaning techniques, and the (h,k)-paging problem.