1. Introduction 2. Hardware Layer Optimization 1. Multi-Queue 2. Ring Buffer 3. Network Card Offload Feature Tuning 4. Jumbo Frames (MTU) 3. Kernel Network Stack Optimization 1. Socket Buffer 2. Backlog Queue 3. TIME_WAIT and Short Connection Optimization 4. TCP Congestion Control Algorithms 4. Firewall and NAT Layer Optimization 5. Conclusion 1. Introduction By default, … Read more
backward-cpp is a library for C++ that helps developers perform stack tracing when a program crashes, providing detailed error information similar to stack trace functionality. This library is commonly used for debugging and error tracking, offering valuable insights when handling crashes and exceptions, helping developers quickly locate and fix issues. 1. Introduction backward-cpp is a … Read more
✅ 1. <span>EXPLAIN FORMAT=JSON</span> —— In-depth Analysis of Execution Plans 🔍 Purpose Provides more detailed execution information than the standard <span>EXPLAIN</span>, including: Cost of accessing each table (<span>cost_info</span>) Details on index usage Whether temporary tables or sorting are used JOIN order and driving strategy 📌 Usage EXPLAIN FORMAT=JSON SELECT u.username, v.n_time FROM abc v JOIN … Read more
Application systems run on top of the operating system, and the performance of the system also affects the performance of the application programs. Here are some key configuration details for optimizing Linux performance. Disable SELinux Permanently SELinux enhances system security but can cause many issues, so it is generally recommended to disable it. [root@localhost ~]# … Read more
Keywords for this issue: multithreading, multiprocessing, coroutines, performance tuning, debugging Difficulty: Beginner → Intermediate Practical 1. Basic Concurrency 1. Short Answer: What is the core difference between <span>threading</span> and <span>multiprocessing</span>? 2. Coding Question: Start a thread to execute a print task import threading def worker(): print("Worker thread is running") # Complete the thread creation and … Read more
链接：https://www.cnblogs.com/heyongshen/p/16417712.html Linux Bridge Management Concept of a Bridge • In everyday life, a bridge is a structure that connects two places, allowing pedestrians, vehicles, etc., to safely cross obstacles (such as rivers or highways). • In computer networking technology, a bridge is a physical or logical device that operates at the data link layer and … Read more
This is specifically designed for those aiming for Linux operations positions in major companies, featuring10 in-depth interview questions covering high-frequency topics such as fault diagnosis, architecture design, and kernel principles, along with problem-solving approaches and bonus tips: 1. Fault Diagnosis: When the TCP half-connection count of an online server surges to over 50,000, how to … Read more
1. Overview of Qt Embedded Development Qt/Embedded Linux (now known as Qt for Device Creation) is a version of Qt optimized for embedded systems, featuring the following characteristics: No need for the X Window System, using its own window system QWS (Qt Window System) Customizable compilation, removing unnecessary modules Supports multiple processor architectures (ARM, MIPS, … Read more
Recently, while testing the customized firmware for the RK3588 (From Bricked to Rebirth: My RK3588 Development Board Embarks on the Journey of Modifying Ubuntu), I frequently encountered file transfer issues. We previously set up an Nginx download server (Creating a Download Page for OpenVPN Configuration Files Using Nginx) and tested downloads at full speed; we … Read more
▼ Click the card below to follow me ▲ Click the card above to follow me Gunicorn: Let Your Python Web Applications Soar! In Python web development, there is a powerful tool that can help you easily turn frameworks like Flask and Django into robust production-grade application servers — Gunicorn. It acts like an efficient … Read more