Research areas: Windows & Linux platforms, C/C++ backend development, embedded systems and Linux kernel, etc.
This article explains the fundamentals of Remote Direct Memory Access (RDMA), its low‑latency, zero‑copy architecture, core principles, programming interfaces, and how it transforms data‑center networking, high‑performance computing, and distributed storage by bypassing the CPU and kernel.
An in‑depth look at Linux’s DRM GPU driver framework reveals how Direct Rendering Manager, libdrm, KMS, GEM and related components collaborate to manage GPU resources, render graphics, and support multi‑display setups, complete with illustrative code examples and practical debugging tips.
This article explains the most common C language compilation, linking, and runtime error codes, shows why they occur, and provides clear examples and step‑by‑step fixes so beginners can quickly diagnose and resolve their code problems.
This article explains step by step how a Linux system boots—from hardware initialization by BIOS/UEFI, through the GRUB bootloader loading the compressed kernel, to kernel decompression, initramfs setup, root filesystem mounting, init system startup, user login, and finally the orderly shutdown process, providing practical commands and troubleshooting tips.
This article demystifies the Linux kernel by explaining its core subsystems—process scheduling, memory management, virtual file system, networking, and device drivers—while offering practical learning paths, essential commands, code examples, and curated resources for anyone wanting to master Linux internals.
This comprehensive guide explains how TCP/IP functions as the Internet's traffic rules, details each protocol in the suite, explores the four‑layer model, showcases practical C++ socket examples, and provides troubleshooting tips for real‑world networking scenarios.
This guide walks Linux developers and operators through the fundamentals of kernel memory management, common memory bugs, and step‑by‑step configuration and usage of KASAN—including shadow memory, compile‑time instrumentation, kernel build options, and practical code examples—to quickly locate and fix out‑of‑bounds, use‑after‑free, and leak issues.
This comprehensive guide explains Linux I/O fundamentals, the multi‑layer buffering architecture, buffering modes, tuning parameters, and practical code examples, helping developers and system administrators dramatically improve read/write performance and resource utilization on Linux servers.
This article explores Linux system call hooking by first reviewing syscall fundamentals, then detailing various Hook techniques—including function pointer replacement, LD_PRELOAD, and kernel modules—accompanied by C/C++ examples, and demonstrates practical applications in security monitoring, performance optimization, and debugging across real-world scenarios.
This article explains how Linux’s Netlink mechanism provides efficient, full‑duplex communication between kernel space and user space, overcoming the limitations of ioctl, /proc, and system calls, and details its architecture, data structures, API usage, and real‑world applications.
