Background Previously, there were no users for sharding. Today, I felt inspired to give it a try. Background Previously, there were no users for sharding. Today, I felt inspired to give it a try. Preparation Work 1. Create Database and Tables CREATE DATABASE `order_db` CHARACTER SET 'utf8' COLLATE 'utf8_general_ci';DROP TABLE IF EXISTS `t_order_1`; CREATE TABLE … Read more
Introduction: The Fragmentation Dilemma of Embedded Systems In fields such as the Internet of Things, smart homes, and industrial control, embedded devices are experiencing exponential growth. However, developers often face two major challenges: 1. Hardware Fragmentation: The coexistence of ARM, MIPS, x86, and other architectures leads to high adaptation costs. 2. Function Customization: From network … Read more
Introduction CentOS (Community Enterprise Operating System) is one of the Linux distributions, which is free, open-source, and redistributable open-source operating system [1]. The CentOS Linux distribution is a stable, predictable, manageable, and reproducible platform, derived from Red Hat Enterprise Linux (RHEL) and compiled from source code released under the open-source (mostly GPL open-source license) [2]. … Read more
Set Script Home as “Starred⭐” to receive article updates immediately Source | Virtual Machine (ID: vmachine) You may be curious about some system calls in Linux, such as creat instead of create and umount instead of unmount. On page 204 of the book UNIX Programming Environment by Brian Kernighan and Rob Pike, the following footnote … Read more
Previously, an article analyzed the reasons for packet loss in bonded network interfaces and their solutions. This article will detail the root causes of packet loss in bonded network interfaces and dynamically analyze the kernel using the bpftrace tool. We will also use dropwatch to observe packet loss in the kernel: Packet loss occurs in … Read more
Original:https://mp.weixin.qq.com/s/8tBqZ3G7reXkHOXj4rxMMA 1. Introduction The Hibernate and Sleep functions are core features of Linux Power Management (PM), and their purposes are similar: pause usage —> save context —> power off the system to save energy········> restore the system —> restore context —> continue usage. This article introduces these two functions from the perspective of the interfaces … Read more
Xile Jun Tableau Consultant, Agile BI Evangelist, Shandong UniversityAuthor of four books including “Data Visualization Analysis” and “Business Visualization Analysis”, serial entrepreneur,Tableau Visionary 2021-2025 External Mentor at the School of Management, China University of Geosciences (Wuhan) Connecting with others through Tableau, dedicated to building a general framework for business analysis XILEJUN.com Global, XILEJUN.cn China In … Read more
In the world of the internet, DNS (Domain Name System) acts like a massive phone book, converting human-readable domain names into machine-readable IP addresses. For Linux system administrators and network engineers, a deep understanding of how DNS works and its application in Linux systems is crucial. Let’s dive into the world of DNS in Linux, … Read more
Reported by Machine Heart Editor: Zhang Qian How much parameter redundancy exists in LoRA? This innovative research introduces the LoRI technology, which demonstrates that even significantly reducing the trainable parameters of LoRA can still maintain strong model performance. The research team tested LoRI on mathematical reasoning, code generation, safety alignment, and eight natural language understanding … Read more
The previous article introduced how the clocks of the Central and Peripheral in a piconet are synchronized, as well as the time slots (hereafter referred to as slots). Now, we will discuss how to transmit and receive.1. Transmit/Receive TimingIn a piconet, the Central always starts transmitting on even slots (i.e., when CLK1=0), while the Peripheral … Read more