In embedded real-time systems, interrupts are the core mechanism for the system to respond to external events. Whether it is sensor signals, peripheral inputs, or timer triggers, interrupts are necessary to ensure that the system can react in a very short time. Therefore, the quality of the interrupt handling mechanism directly affects the performance of … Read more
Table of Contents 1. Core Concepts of Stream Buffer 1.1 Design Purpose 1.2 Key Features 2. Practical Implementation of Efficient Data Stream Transmission 2.1 Serial Data Transmission and Reception Example 2.2 Performance Optimization Techniques 3. In-depth Comparison with Queues 4. Quick Reference for Key APIs 5. Best Practice Recommendations 1. Core Concepts of Stream Buffer … Read more
Some friends around me are very interested in Agent development, but they feel that the knowledge points in this field are both scattered and abstract. From ReAct to Multi-Agent collaboration, from Memory design to Tool invocation, each concept is important, but learning them individually can feel lacking in practical experience. Therefore, I decided to use … Read more
Many people habitually type the <span><span>cp</span></span> command in a Linux environment, specifying the source path and destination path, pressing Enter, and waiting for the progress to finish. For small files, this approach is almost without issue. However, once we enter a real production environment where the objects being copied are large files of dozens or … Read more
@[toc] Code Structure Optimization /* USER CODE BEGIN Header */ /** ****************************************************************************** * @file : adc_dma.c * @brief : ADC with DMA implementation for STM32F7 series ****************************************************************************** * @attention * – STM32F7 L1-cache considerations: * – Enabling D-cache will cause DMA data not to update * – Solutions: * – Use DTCM memory (0x20000000) * … Read more
In Linux systems, files are automatically cached in memory (Page Cache) when read. However, if you want to proactively warm up the cache (preload files into Cache), you can use the following methods: — ## **1. Use the `dd` Command to Read Files (Trigger Cache)** dd if=filename of=/dev/null bs=1M – **Purpose**: Read the file without … Read more
1. Origin of the Problem: When using a Linux system, we often find that the cache occupies a large amount of memory. For example, when checking memory status with the `free` command, we may see that `buff/cache` has already taken up 2.1G of memory. Since the Linux 2.4 version, “buffer” and “cache” have been unified … Read more
In modern e-commerce platform development, choosing the right programming language is particularly important. While many focus on high-level languages such as Python, Java, or JavaScript, the significance of C language is often overlooked. As a low-level programming language, C offers efficiency and flexibility, playing an indispensable role in certain modules of e-commerce systems. The Importance … Read more
Learning website for Eight-legged essays:https://www.chengxuchu.com Hello everyone, I am Chef, a programmer who loves cooking and has obtained a chef qualification certificate. C++ is a system-level language that is close to hardware, and its performance advantages have always been favored by developers. However, writing high-performance C++ code in actual projects is not a simple task, … Read more
In ESP32 development, execution efficiency analysis is a core aspect of performance optimization, aimed at identifying code bottlenecks through quantitative methods and optimizing them accordingly. The following are execution efficiency analysis strategies based on the characteristics of the ESP32 and practical project experience, covering performance testing methods, algorithm optimization, compiler configuration, and task scheduling: 1. … Read more