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
In the previous article, I introduced some of the pros and cons of ECU tuning. If the last article discussed the principles, this one will focus entirely on methodologies. There are several types of ECU tuning available on the market, including small boxes, “original flashing”, external devices, and complete replacements. Which one is reliable? Where … Read more
Author / Crab Claw Facing Heaven Engine Management Series Articles Are the Knowledge Crystallization of Crab Claw’s Hard Work It is recommended to read and collect multiple times Knowing that the first reading may be incomprehensible But it will definitely be useful In this “Engine Management” series, we will explain some common problems and blind … Read more
1. What is ECU ECU (Electronic Control Unit), also known as “vehicle computer” or “onboard computer”, is a dedicated microcontroller for automobiles. It consists of a microprocessor (CPU), memory (ROM, RAM), input/output interfaces (I/O), analog-to-digital converters (A/D), and other large-scale integrated circuits, just like a regular computer. In simple terms, “the ECU is the brain … Read more
Original link: https://bbs.huaweicloud.com/blogs/355148 Sometimes you may want to analyze your program based on the following parameters: Time spent by the program in user mode Time spent by the program in kernel mode Average memory usage of the program ETC On Linux, we have a utility called time designed specifically for this purpose. The time utility … Read more
Recently, another friend who does integration shared a funny story with me. During the server optimization process, he mistakenly changed a parameter and almost caused a disaster. As we all know, whether it’s migration or optimization, it sounds simple but can be quite complicated. This article is something I got from a friend, so let’s … Read more