Click the “blue text” above to follow us “The program was running fast when it first launched, but why is it crawling like a snail now?” I received a request for help from a student a few days ago. After investigation, I found that he was using the default HTTP client from the Go standard … Read more
【Summary】 Sometimes you may want to analyze your program based on the following parameters: the time spent by the program in user mode, the time spent by the program in kernel mode, the average memory usage of the program, etc. On Linux, we have a utility specifically designed for this purpose called “time”. The “time” … Read more
Last year during the upgrade of the core banking system, I spent three minutes staring at the “Transaction Security Encryption in Progress” message on the mobile banking app—not because the system was stuck, but because our team was debugging the integration of the SM4 algorithm overnight. As a commercially developed encryption algorithm in China, SM4 … Read more
Click the “blue text” above to follow us Have you ever encountered a situation where the server inexplicably cannot handle the traffic? Despite having sufficient configuration, it keeps dropping connections. After checking for a long time, you find that the issue lies in HTTP connection handling. Think about it, HTTP connections are like tables in … Read more
(Click the blue text above to quickly follow us) English: codeproject, Translation: Programmer Network gunner www.codeceo.com/article/c-high-performance-coding.html If you have good articles to submit, please click → here for details In this article, I have gathered a lot of experiences and methods. Applying these experiences and methods can help us optimize C language code in terms … Read more
🔥 When you see the output of <span><span>ip a</span></span>, are you confused by the mysterious parameters like <span><span>LOOPBACK</span></span>, <span><span>fq_codel</span></span>, and <span><span>metric 100</span></span>? 🔥 This article uses real terminal output examples to analyze the meaning of each parameter line by line and reveals how to diagnose network issues using them!🚀 At the end of the article, … Read more
In this series on “Engine Management”, we will explain some common issues and blind spots encountered by domestic players, aiming to help everyone understand how the ECU program controls the engine’s operation and what modifications should be made to the ECU program after changing the engine’s hardware.Mastering knowledge and scientifically modifying is the only way … Read more
Author / Crab Claw Facing Heaven The Working Principle of Fuel Injectors in Most Vehicles During the period when fuel injection is needed, the valve body inside the injector is lifted under the control of electromagnetic force, opening the oil path between the internal high-pressure fuel and the nozzle, allowing high-pressure fuel to spray out … Read more
A man’s pursuit and desire for horsepower and torque, whether driving a gasoline or diesel vehicle, is similar to his desire for women: the bigger, the better; the more, the better; it is never-ending. Consequently, many devices marketed as “computer mods” or “power modules” have emerged on the market, with some even more straightforwardly named … Read more
1. Reasons for CPU Usage Over 100% in top CommandIn Linux systems, a process’s CPU usage exceeding 100% in the top command can have multiple reasons.(1) Factors Related to Multi-Core Processors 1. Characteristics of Multi-Core CPUs – For multi-core processor systems, the top command divides CPU usage by the number of cores and displays it … Read more