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
1. Locate 1. Performance Overview Queries the pre-built file index database on the system /var/lib/mlocate/mlocate.db Note: If this file is deleted, locate will not work. You need to manually update the database (updatedb) or restart the system for locate to function again. Relies on a pre-built index: The index is constructed automatically during idle times … Read more
<span>top</span> is a very powerful real-time system monitoring tool in Linux that allows you to dynamically view the system’s operating status, including the usage of resources such as CPU, memory, and processes. 1. Starting top To start top, simply enter the following command in the terminal: top 2. Overview of the top Interface The top … Read more
Today, let’s talk about the LCD Framebuffer in Linux, which is a powerful tool in embedded systems. Despite its fancy name, it’s actually very simple to use; it’s just a large array in memory that stores the color information of each pixel on the screen. What is a Framebuffer? In simple terms, a Framebuffer is … Read more
Linux 6.6 uses the EEVDF (Earliest Eligible Virtual Deadline First) scheduler to replace the CFS (Completely Fair Scheduler). Linux 6.12 completes the EEVDF scheduler by improving the handling of sleep process latency and supporting process time slice settings. The EEVDF scheduler considers schedule latency as one of the factors in process scheduling, ensuring fair allocation … Read more
How to Set Up Linux System Services chkconfig is used to check and set various system services. The syntax is: chkconfig [options]. Linux has treated me harshly a thousand times, yet I treat it like my first love. Once you learn, you must apply it, follow along with me to operate. For more usage, feel … Read more
(1) Process Concept A process is a program that has been executed. It does not occupy disk space but consumes system memory, CPU resources, and each running process corresponds to its own virtual address space. (2) Concepts of Parallelism and Concurrency The CPU allocates a time slice to each process, and a process can run … Read more
Tmux is what? A typical usage of session and process command line is to open a terminal window (terminal window, hereinafter referred to as “window”) and enter commands inside it. “The temporary interaction between the user and the computer is called a session.” One important characteristic of a session is that the window is connected … Read more
Linux Commands for Managing Files and Directories pwd——Prints the current path of the user, print work directory, used in text mode cd——Changes the current directory, change directory Format: cd <directory_name> [root@localhost~]# cd.. Go back to the parent directory [root@localhost~]# cd Go to the user’s home directory [root@localhost~]# cd/home Switch to the home directory using the … Read more
Follow「Raymond Operations」 WeChat official account, and set it as「Starred」, you can also scan the QR code at the bottom to join the group chat, to get the latest content in real time and never miss exciting content. Introduction to DNS DNS (Domain Name System): is a system that uses a client/server mechanism to convert computer … Read more