1. Problem Analysis We need to write a subroutine that displays a given byte of data in hexadecimal format at the center of the screen. One byte should be represented by two hexadecimal characters, corresponding to the high 4 bits and low 4 bits of the value. Key Points: Separate the high 4 bits and … Read more
How to Run Linux Containers on macOS Using Docker Desktop Docker Desktop is the most convenient solution for running containers on macOS, supporting the direct execution of Linux containers. After installing Docker Desktop, the system automatically creates a lightweight Linux virtual machine (based on HyperKit), requiring no manual configuration. You can directly pull and run … Read more
A Complete Guide to Bit Manipulation in C 1. Basic Concepts of Bit Manipulation Bit manipulation is a technique that directly operates on the binary bits of integers in memory. The C language provides six bitwise operators: 1. Bitwise AND (&): The result is 1 when both corresponding bits of the operands are 1. 2. … Read more
0. Introduction There are two common ways to improve efficiency: one is to increase concurrency, and the other is to increase data throughput.In previous articles, we discussed multithreading concurrency, which is a common method for increasing concurrency; this article will introduce SIMD, which is related to increasing data throughput, allowing for the processing of more … Read more
NIC Device Driver Tuning NIC Device Driver Typically, the device driver versions included with Linux distributions are outdated and may not support all the latest features. This page provides information on updating device drivers. To check the current driver version, execute the following command: ethtool -i ethN The command ethtool -i ethN is used in … Read more
Practical Guide to Network Parameter Tuning in High-Concurrency Linux Scenarios Table of Contents • Practical Guide to Network Parameter Tuning in High-Concurrency Linux Scenarios • • Introduction • 1. Background: When Concurrent Connections Encounter Performance Bottlenecks • • 1.1 Case Environment • 1.2 Initial Parameter Analysis • 2. In-Depth Diagnosis: Connection Status and Kernel Parameters … Read more
Click the aboveblue text to follow us In the field of embedded system development, logging systems are like black boxes in the digital world, carrying key information about the system’s operational status. The traditional printf debugging method, while simple and easy to use, exposes significant issues such as low efficiency, high resource consumption, and poor … Read more
In Linux operations, mastering key commands can significantly enhance troubleshooting and system management efficiency. Whether it’s server lag, network anomalies, or log analysis and performance optimization, the right commands can help you quickly identify and resolve issues. This article compiles 20 of the most practical Linux commands, covering system monitoring, network diagnostics, log analysis, and … Read more
Linux | Red Hat Certified | IT Technology | Operations Engineer 👇 Join our technical exchange QQ group with the note 【Public Account】 for faster approval 1. Background: When Concurrent Connections Encounter Performance Bottlenecks 1.1 Case Environment Server Configuration: vCPU: 8 cores | Memory: 16GB | Network Bandwidth: 4Gbps | PPS: 800,000 Observed Anomalies: TIME_WAIT … Read more
▼ Click the card below to follow me Pillow-SIMD: The Performance Acceleration Tool for Image Processing! Imagine a day when you are processing a large number of images, but your computer is running as slow as a snail. Are traditional image processing libraries driving you crazy? Don’t worry, Pillow-SIMD is your performance savior! This is … Read more