dynamic memory management

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

Guide to Dynamic Memory Usage in FreeRTOS: Choosing Between malloc and pvPortMalloc

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Guide to Dynamic Memory Usage in FreeRTOS: Choosing Between malloc and pvPortMalloc

In embedded development, you might write something like this: uint8_t* buf = malloc(1024); // Allocate 1KB of memory It seems convenient, but in a multitasking system like FreeRTOS, there are some details regarding memory management that need attention. Differences Between malloc Heap and FreeRTOS Heap Feature malloc / free pvPortMalloc / vPortFree Heap Source C … Read more

Core Skills in Embedded Systems: Master These ‘Hardcore Weapons’ to Easily Achieve a Monthly Salary Over 10,000

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Core Skills in Embedded Systems: Master These 'Hardcore Weapons' to Easily Achieve a Monthly Salary Over 10,000

Introduction “Teacher, I have only learned C language and microcontrollers. Can I find a job with a monthly salary over 10,000?” This is one of the most frequently asked questions recently. The answer is: absolutely, but the premise is that you must master the right skill set. In the automotive embedded field, a monthly salary … Read more

Golden Rules for Linux Performance Tuning: Addressing CPU, Memory, and I/O Bottlenecks

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Golden Rules for Linux Performance Tuning: Addressing CPU, Memory, and I/O Bottlenecks

来自：马哥Linux运维 Introduction: Starting with a Painful Downtime Incident It was a Friday afternoon, just as I was about to leave work happily, when the monitoring system suddenly went into a frenzy of alarms. The response time of our core online business system skyrocketed from the usual 200ms to 8 seconds, and user complaint calls flooded … 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

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

Usage of the string Class in C++

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Usage of the string Class in C++

In C++, the <span><span>string</span></span> class is provided by the standard library (defined in the <span><span><string></span></span> header file) for convenient string (character array) manipulation. It encapsulates operations on character arrays, providing a rich set of member functions, thus avoiding the cumbersome and safety issues of manually managing character arrays in C (such as buffer overflows). 1. … Read more

In-Depth Analysis of Linux NUMA Systems: From Principles to Practice

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In-Depth Analysis of Linux NUMA Systems: From Principles to Practice

In-Depth Analysis of Linux NUMA Systems: From Principles to Practice 1 Overview of NUMA Systems 1.1 What is NUMA? Non-Uniform Memory Access (NUMA) is a memory architecture designed for multiprocessor systems. In traditional Symmetric Multiprocessing (SMP) systems, all processors share a single centralized memory controller, and all memory accesses have the same latency, a structure … Read more

How the Linux System is Transformed into a Real-Time Kernel

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How the Linux System is Transformed into a Real-Time Kernel

1. Basic Concepts and Background of Linux RT Patches 1.1 Concept of Real-Time and Positioning of Linux RT In modern embedded systems and industrial control fields, real-time performance has become a key indicator of operating system performance. Real-time performance refers to the guaranteed execution time of a specific task, ensuring that the task’s deadline (maximum … Read more

Mastering Pointers in C Language in Just 15 Minutes!

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Mastering Pointers in C Language in Just 15 Minutes!

When it comes to pointers, many people might still feel confused, having a sense of “knowing it exists but not understanding how it works.” However, it must be said that learning pointers is essential for getting started with C language. Pointers are the essence of C language, and your proficiency with pointers directly determines your … Read more