performance analysis

Essential Course on Performance Optimization: In-Depth Analysis of Embedded Linux CPU Scheduling

by
Essential Course on Performance Optimization: In-Depth Analysis of Embedded Linux CPU Scheduling

In embedded Linux systems, CPU scheduling directly determines system performance, task response speed, and real-time performance. Especially in resource-constrained scenarios such as industrial, communication, automotive, and smart devices, reasonable configuration and optimization of CPU scheduling are core aspects of enhancing embedded system performance. This article will provide a complete guide to CPU scheduling optimization for … Read more

Red-Black Trees vs AVL Trees vs Hash Tables: A Comprehensive Analysis of C++ Set’s Underlying Choices

by
Red-Black Trees vs AVL Trees vs Hash Tables: A Comprehensive Analysis of C++ Set's Underlying Choices

Click the “C++ Players, please get ready” button below, select “Follow/Pin/Star the public account” for valuable content and benefits, delivered to you first! If you find the content helpful, please consider following and showing some love, thank you. C++ set uses red-black trees, while unordered_set uses hash tables. Why? This is not a random choice. … Read more

GitHub Stars Surge! This C++ Frame Performance Analyzer Makes Program Optimization Clear!

by
GitHub Stars Surge! This C++ Frame Performance Analyzer Makes Program Optimization Clear!

November 20, 2025 | Selected High-Quality Open Source Projects 01. Tracy Tracy is a frame performance analyzer written in C++, primarily designed to help developers gain deep insights into the runtime performance of their programs. This tool is particularly suitable for scenarios such as game development, graphics applications, and real-time systems that require precise performance … Read more

Container Debugging and Performance Analysis in K8S Using busybox-dig and nsenter

by
Container Debugging and Performance Analysis in K8S Using busybox-dig and nsenter

In Kubernetes operations, the isolation of containers is both a core advantage and a debugging challenge. For instance, basic containers often lack tools like tcpdump and telnet, which hinders network troubleshooting, and performance bottlenecks are difficult to locate due to namespace isolation. We combine the deployment of lightweight debugging containers with the capability of the … Read more

Understanding ‘Load Average’ in Linux

by

1. Introduction: Why is the system slow when CPU usage is low? One early morning, a monitoring alert went off: “Server load average spiked to 20!” You quickly log into the server: $ uptime 12:30:01 up 30 days, 5:22, 2 users, load average: 20.12, 18.45, 15.67 Next, check <span>top</span>: %Cpu(s): 2.1%us, 0.5%sy, 0.0%ni, 97.0%id, 0.3%wa, … Read more

Strace Command: The Ultimate Tool for Tracing Linux System Calls!

by

1. What is strace In simple terms, <span>strace</span> acts like a “listener” between your program and the operating system. Does your program want to read a file? Make a system call? Send a network request? Or make a system call?<span>strace</span> sits in the middle and records all these conversations. The most crucial part is: No … Read more

In-Depth Analysis of the top Command: A Powerful Tool for Linux System Monitoring and Performance Analysis

by

In-Depth Analysis of <span>top</span> Command: A Powerful Tool for Linux System Monitoring and Performance Analysis In the daily operation and maintenance of Linux and Unix-like operating systems, understanding the system’s operational status and mastering resource usage is key to ensuring stable and efficient services. For system administrators, operations engineers, and even developers, there is one … Read more

Linux Top Command Usage Tutorial and Tips

by

Linux Top Command Usage Tutorial and Tips 1. Basic Usage Starting top # Start directly top # Set refresh interval (seconds) top -d 2 # Show only processes of a specific user top -u username # Hide idle processes on startup top -i 2. Overview of the Top Interface top – 10:30:00 up 10 days, … Read more

Java Performance Analysis – Section Four – JVM Monitoring on Linux

by

Monitoring and Performance Analysis Monitoring Monitoring typically refers to a proactive or preventive activity in production, quality assessment, or development environments. When the application owner receives performance issues without sufficient clues to locate the problem, they will first check performance monitoring, followed by performance analysis. Performance Analysis Performance analysis is an intrusive activity that collects … Read more

Comprehensive Toolchain for Linux Performance Analysis: From Monitoring to Optimization

by

In the operation and performance optimization of Linux systems, mastering the appropriate performance analysis tools is crucial. This article systematically introduces the practical usage of various performance analysis tools and demonstrates how to locate and resolve performance issues through real-world cases. 1. Overall System Monitoring: Establishing Performance Baselines 1. vmstat – The Swiss Army Knife … Read more