Linux performance optimization

Do You Really Know How to Use Switch in C/C++? Two Details That Even Experienced Programmers May Not Be Aware Of!

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Do You Really Know How to Use Switch in C/C++? Two Details That Even Experienced Programmers May Not Be Aware Of!

Follow our public account for timely embedded content! 👇 Table of Contents 1. Introduction 2. Basic Syntax and Semantics 3. Detailed Explanation 4. Conclusion 1. Introduction The switch statement is a fundamental concept that every C/C++ programmer must learn. It appears simple: an expression, a series of case labels, and an optional default. However, behind … Read more

Comprehensive In-Depth Analysis of Linux TLB Management Mechanism: From Principles to Practice

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Comprehensive In-Depth Analysis of Linux TLB Management Mechanism: From Principles to Practice

Comprehensive In-Depth Analysis of Linux TLB Management Mechanism: From Principles to Practice 1 TLB Basic Concepts and Background Introduction 1.1 What is TLB and Its Importance in Memory Management Translation Lookaside Buffer (TLB) is a specialized cache in the Memory Management Unit (MMU) used to accelerate the translation process from virtual addresses to physical addresses. … Read more

In-Depth Analysis of Linux SMP Technology: From Principles to Practice

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In-Depth Analysis of Linux SMP Technology: From Principles to Practice

In-Depth Analysis of Linux SMP Technology: From Principles to Practice 1 Basic Concepts of SMP Symmetric Multiprocessing (SMP) is a computer architecture technology that integrates multiple processors into a single system. Its core feature is that all processors work together in a peer-to-peer manner within a single operating system, sharing a unified memory space and … Read more

Recent Breakthroughs in 3D Printing: Dual Advances in Structure and Performance

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Recent Breakthroughs in 3D Printing: Dual Advances in Structure and Performance

I. Research Background Piezoelectric devices are widely used in medical diagnostics, industrial testing, and intelligent systems. However, their core requirement—balancing complex structural formation with high-performance output—has long been constrained by traditional manufacturing technologies. Conventional material manufacturing (molding, casting) and subtractive manufacturing (laser cutting, milling) face issues such as insufficient precision, limited shapes, and long production … Read more

Playwright for Rust: Bridging the Gap in E2E Testing

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Playwright for Rust: Bridging the Gap in E2E Testing

Rust is emerging as a serious web development language, with frameworks like Axum and Actix gaining traction. Playwright has become the gold standard for E2E testing, praised for its reliability, speed, and developer experience. It’s available in JavaScript, Python, Java, and .NET – but not Rust. The Rust web ecosystem has grown rapidly. Frameworks like … Read more

In-Depth Analysis of Kubernetes Linux Node Swap Tuning

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In-Depth Analysis of Kubernetes Linux Node Swap Tuning

Welcome to click below 👇 to follow me, and remember to star it~ There will be significant benefits at the end of the article. Introduction The NodeSwap feature of Kubernetes (see Kubernetes documentation) is expected to be officially stabilized in the upcoming v1.34 release. This feature marks a significant shift in Kubernetes from the traditional … Read more

In-Depth Analysis of the Linux Network Stack: From TCP/IP Protocol Stack to Zero-Copy Technology

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In-Depth Analysis of the Linux Network Stack: From TCP/IP Protocol Stack to Zero-Copy Technology

Source: Linux Technology Enthusiast What exactly happens to a complete network packet from the network card to the application? Why can zero-copy technology improve network performance by dozens of times? As operations engineers, we deal with various network issues every day. But do you really understand how, when a user clicks a link, the packet … Read more

In-Depth Analysis of Linux Soft Interrupts: From Principles to Practice

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In-Depth Analysis of Linux Soft Interrupts: From Principles to Practice

In-Depth Analysis of Linux Soft Interrupts: From Principles to Practice 1 Overview of Linux Soft Interrupts 1.1 What are Soft Interrupts and Their Design Motivation In the Linux kernel, soft interrupts (Softirq) are a very importantdelayed processing mechanism, which is entirely triggered by software. Although referred to as “interrupts”, they are actually a mechanism fordelayed … Read more

J27 — Practical Implementation of Flux: Development and Performance Optimization of HTTP Streaming Interfaces

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J27 — Practical Implementation of Flux: Development and Performance Optimization of HTTP Streaming Interfaces

When developing high-volume streaming interfaces, have you ever encountered confusion: even with Flux, why does returning millions of data still cause lag? What is a reasonable chunk size? Does memory leak when there are too many concurrent requests? In fact, the performance limit of Flux streaming interfaces does not depend on whether to use it, … Read more

Python Performance Optimization: 10 Core Techniques Every Beginner Should Master (Including Code Demonstrations)

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Python Performance Optimization: 10 Core Techniques Every Beginner Should Master (Including Code Demonstrations)

Python’s slow performance is not due to being an “interpreted” language, but rather due to incorrect data structure choices, excessive unnecessary object creation, repeated function calls, and misuse of exceptions. There are only two categories of underlying principles: 1. Reduce time complexity 2. Reduce memory usage and object overhead The following sections will elaborate on … Read more