This article explains Linux's memory architecture, covering physical and virtual memory differences between 32‑bit and 64‑bit systems, memory zones, the buddy allocator, page reclamation, and swap handling, providing essential knowledge for performance tuning and system optimization.
This article provides a comprehensive visual overview of CPU architecture, instruction sets, operating system purposes, programming layers, privilege rings, execution modes, user interfaces, and the distinction between ABI and API, helping readers grasp core computing concepts in a structured manner.
Server virtualization, a key cloud computing technology, encompasses various architectures—including hosted, bare‑metal, operating‑system level, and hybrid virtualization—each with distinct mechanisms for resource abstraction, and the article compares these models while highlighting trends toward hardware‑assisted solutions such as KVM, Hyper‑V, and VMware.
This article explains why the Linux kernel has succeeded, describing its layered position in a computer system, the roles of virtualization and multitasking, the overall modular architecture, key data structures, and the design of core subsystems such as the process scheduler, memory manager, virtual file system, and network interface.
The article examines how Apple, Google, and other platforms are shifting core functionalities from standalone apps to the operating system’s home screen and notification center, envisioning a cloud‑based future where users simply state their intent and the OS delivers the result.
This article explains the complete Linux boot sequence, detailing how POST, BIOS, the MBR bootloader, GRUB stages, the kernel, initrd, and the init process work together to detect hardware, load drivers, mount the root filesystem, and start system services.
This article demystifies threads and processes, explaining OS task scheduling, the differences between them, various threading models (one-to-one, many-to-one, many-to-many), their relationship with multicore CPUs, and how to view thread and process information on Windows.
The article details the official CentOS 7.0.1406 64‑bit release announced on July 7, 2014, highlighting kernel upgrades, container support, default JDK, installation media options, verification steps, major changes, downgrade options, known issues, and where to obtain source code and ISO images.
