Author

Deepin Linux

Research areas: Windows & Linux platforms, C/C++ backend development, embedded systems and Linux kernel, etc.

419

Articles

Likes

1.4k

Views

Comments

Latest from Deepin Linux

100 recent articles max

Deepin Linux

Jan 25, 2026 · Fundamentals

Why mmap Outperforms io_uring in Real-World I/O – A Deep Linux Memory‑Mapping Guide

mmap, the classic Linux memory‑mapping technique, often surpasses the modern async io_uring in various I/O scenarios by eliminating redundant data copies, reducing system calls, and enabling zero‑copy access, while the article explains its fundamentals, workflow, performance comparisons, practical usage, pitfalls, and code examples.

LinuxPerformanceio_uring

0 likes · 44 min read

Why mmap Outperforms io_uring in Real-World I/O – A Deep Linux Memory‑Mapping Guide

Deepin Linux

Jan 24, 2026 · Fundamentals

Unlocking Linux Performance: A Deep Dive into io_uring and Its Advantages

This comprehensive guide explains why traditional I/O models become bottlenecks in high‑performance computing, introduces the modern io_uring framework with its submission and completion queues, walks through its design goals, core concepts, workflow, performance comparisons, optimization tips, real‑world use cases, and provides complete C examples for practical adoption.

C programmingLinuxPerformance optimization

0 likes · 48 min read

Unlocking Linux Performance: A Deep Dive into io_uring and Its Advantages

Deepin Linux

Jan 22, 2026 · Operations

Mastering kdump: From Theory to Hands‑On Linux Crash Dump Configuration

This guide explains what kdump is, how it works, and provides step‑by‑step instructions for installing, configuring, and verifying kdump on Linux systems, plus tips for analyzing vmcore files with crash and GDB.

KDUMPLinuxcrash analysis

0 likes · 16 min read

Mastering kdump: From Theory to Hands‑On Linux Crash Dump Configuration

Deepin Linux

Jan 13, 2026 · Operations

Master Linux Shell Scripting: From Basics to Real-World Automation

This comprehensive guide walks readers through the fundamentals of Linux shell scripting, covering essential commands, variables, control structures, functions, and practical automation scripts for monitoring, log analysis, and backups, while also addressing performance and security best practices.

LinuxSystem Administrationautomation

0 likes · 30 min read

Master Linux Shell Scripting: From Basics to Real-World Automation

Deepin Linux

Jan 11, 2026 · Fundamentals

Mastering Linux Kernel Linked Lists: From Theory to High‑Performance Code

This article explains the design, implementation, and practical use of the Linux kernel's intrusive linked‑list data structure, covering its core concepts, list_head definition, common macros, insertion, deletion, traversal, optimization techniques, concurrency control with RCU and memory barriers, and real‑world examples in device drivers and process scheduling.

Data StructuresLinux kernelconcurrency

0 likes · 37 min read

Mastering Linux Kernel Linked Lists: From Theory to High‑Performance Code

Deepin Linux

Jan 10, 2026 · Operations

Master Linux Process Load Balancing with cgroups and taskset: A Step‑by‑Step Guide

This article explains how to use Linux's built‑in cgroups and taskset tools to monitor, limit, and bind process workloads, providing detailed commands, subsystem explanations, collaborative usage strategies, real‑world case studies, and troubleshooting tips for improving system performance and stability.

LinuxPerformance optimizationProcess Management

0 likes · 29 min read

Master Linux Process Load Balancing with cgroups and taskset: A Step‑by‑Step Guide

Deepin Linux

Jan 8, 2026 · Backend Development

How to Dynamically Enable dev_dbg in the Linux Kernel Without Reboot

This article explains the purpose of dev_info, dev_dbg, and dev_err in Linux kernel logging, shows how to view their output, and provides step‑by‑step methods—including dynamic debug, kernel configuration, and module parameters—to enable or disable dev_dbg at runtime without recompiling or rebooting.

Driver developmentLinux kerneldev_dbg

0 likes · 26 min read

How to Dynamically Enable dev_dbg in the Linux Kernel Without Reboot

Deepin Linux

Jan 6, 2026 · Operations

Unlock Linux Performance: Master Memory Watermarks and OOM Killer

This article explains how Linux memory watermarks, kswapd, direct reclaim, and the OOM Killer interact, provides detailed code examples, shows real‑world case studies, and offers practical tuning steps—including kernel parameters, cgroup limits, and monitoring tools—to prevent system stalls and crashes.

LinuxOOM killerWatermarks

0 likes · 41 min read

Unlock Linux Performance: Master Memory Watermarks and OOM Killer

Deepin Linux

Jan 4, 2026 · Fundamentals

Unlocking Linux Shared Memory: Deep Dive into IPC Mechanics and Implementation

This article thoroughly explains Linux shared memory, covering its advantages over other IPC methods, the kernel data structures, virtual‑physical mapping, creation and destruction APIs, copy‑on‑write behavior, and provides complete example code for inter‑process communication.

C programmingIPCShared Memory

0 likes · 46 min read

Unlocking Linux Shared Memory: Deep Dive into IPC Mechanics and Implementation

Deepin Linux

Jan 3, 2026 · Operations

Boost Linux Performance: Master CPU Affinity and Scheduling

This article explains the fundamentals of Linux CPU affinity, compares soft and hard binding, shows how to use taskset, sched_setaffinity, numactl and cgroup cpuset, and provides real‑world case studies for servers, game frameworks, Nginx and Hadoop clusters.

CPU schedulingLinux performancecgroups

0 likes · 36 min read

Boost Linux Performance: Master CPU Affinity and Scheduling