Research areas: Windows & Linux platforms, C/C++ backend development, embedded systems and Linux kernel, etc.
The article explains the design, core concepts, algorithms, and implementation details of Linux 6.6's default EEVDF scheduler, compares it with the legacy CFS, provides practical commands for inspection and switching, and discusses real‑world scenarios and common pitfalls for developers and interview candidates.
This article explains how the Memory Management Unit (MMU) underpins Linux's virtual memory, process isolation, and protection mechanisms, detailing its architecture, address‑translation workflow, TLB caching, practical C implementations, real‑world use cases, and debugging techniques for kernel developers.
This article explains the core philosophy of Linux’s “everything is a file” design, walks through the kernel’s VFS layer, inode, dentry, superblock, logical blocks, and specific file systems, and provides hands‑on examples—including procfs initialization and read/write code—to help readers master Linux kernel file system internals.
This article explains how a C/C++ program is compiled into an ELF executable, details the ELF file structure, describes the kernel's validation and segment mapping, covers dynamic linking, and shows how the process starts execution from the _start entry point, providing practical commands and debugging tips.
This article explains the core principles of NUMA, its deep integration with the Linux kernel, practical memory‑node and scheduling mechanisms, real‑world database and virtualization use cases, and step‑by‑step commands for inspecting and tuning NUMA on modern servers.
This comprehensive guide walks readers through the Linux PCI driver architecture, explains the PCI and PCIe bus evolution, details the kernel's layered driver framework, enumerates devices, manages resources, registers drivers, and presents a full SSD driver case study with code examples and performance tuning techniques.
This article provides a comprehensive guide to the const and static modifiers in C/C++, covering their distinct purposes, usage with variables, pointers, functions, and class members, and answering common interview questions with clear explanations and practical code examples.
This article explains how Linux virtual memory lets each process appear to have a large, independent address space by using paging, page tables, swap, and the MMU, covering concepts from basic virtual memory principles to page replacement algorithms and practical tools.
This article explains the Linux /proc virtual filesystem, detailing its structure, dynamic file generation, key system and process files, and how to use it for real‑time monitoring, performance tuning, kernel parameter tweaking, and troubleshooting, complete with practical command examples and a sample monitoring script.
This step‑by‑step tutorial shows how to configure gRPC, define protobuf service contracts, and implement streaming upload and download in C++, covering environment setup, code generation, server and client logic, testing, and performance tuning for efficient file transfer.
