This article explains the roles and interactions of the Memory Management Unit (MMU), Translation Lookaside Buffer (TLB), and Table Walk Unit (TWU) in virtual‑to‑physical address translation, covering their architecture, operation, and impact on system performance and memory protection.
This article explains the role of the page‑table cache (TLB) in the Linux kernel, describing how it speeds up virtual‑to‑physical address translation, the underlying mapping process, cache organization, replacement policies, and its impact on system performance across desktops, servers, and high‑performance applications.
This article explores the role of the Memory Management Unit (MMU) in Linux, detailing how it translates virtual addresses to physical memory, enforces protection, utilizes page tables, TLB caching, multi‑level paging, and supports process isolation and efficient memory allocation, illustrating concepts with diagrams and code examples.
This article explains the concepts of Source NAT (SNAT) and Destination NAT (DNAT), their mechanisms, primary use cases such as address sharing, load balancing, and security, and provides step‑by‑step iptables commands for implementing these rules in typical network scenarios.
This article explains how modern computer systems use a hierarchical memory structure and virtual memory to overcome physical memory limitations, address translation challenges, fragmentation, and security issues, detailing concepts such as page tables, TLB caching, multi‑level paging, and practical examples.
Virtual memory extends limited physical RAM by giving each process a large address space translated via page tables and a TLB, while multi‑level tables manage size, and the OS separates kernel and user space, offering blocking/non‑blocking, synchronous/asynchronous, multiplexed I/O, reactor patterns, and zero‑copy techniques to optimize data transfer.
This article explains the fundamentals of operating‑system memory management, covering physical memory limits, the need for address spaces, base‑limit protection, paging, virtual memory mapping, page‑fault handling, and a comprehensive review of page‑replacement algorithms such as FIFO, LRU, Clock, and Working‑Set.
