Performance Optimization

Solutions for ADC+DMA Target Array Not Updating

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Solutions for ADC+DMA Target Array Not Updating

@[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

Common Commands That Affect Cache in Linux Systems

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Common Commands That Affect Cache in Linux Systems

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

Analysis of High Memory Usage by Buffers and Cache in Linux

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Analysis of High Memory Usage by Buffers and Cache in Linux

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

The Role of C Language in E-commerce Platform Development

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The Role of C Language in E-commerce Platform Development

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

In-Depth Understanding of C++ Performance Optimization: From Memory Management to Compiler Optimization Practices

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In-Depth Understanding of C++ Performance Optimization: From Memory Management to Compiler Optimization Practices

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

ESP32 Performance Optimization Strategies: Execution Efficiency Analysis

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ESP32 Performance Optimization Strategies: Execution Efficiency Analysis

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

Upgrade of the Smart Terminal Motherboard AIoT-3568A to Android 15.0: Detailed Performance Enhancements

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Upgrade of the Smart Terminal Motherboard AIoT-3568A to Android 15.0: Detailed Performance Enhancements

Recently, Shimeta has completed the operating system upgrade of its quad-core smart terminal motherboardAIoT-3568A to Android 15.0, achieving significant improvements in performance, functional experience, and ecological compatibility, making it particularly suitable for commercial, industrial control, and mid-range consumer electronics devices. Below, we will detail the specific improvements and advantages. 1. Core Performance Upgrade 1, Performance … Read more

Kernel C++ Member Function and C Interface Adaptation Technology from an Assembly Language Perspective

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Kernel C++ Member Function and C Interface Adaptation Technology from an Assembly Language Perspective

Fundamental Differences Between Member Functions and C Functions From an assembly perspective, the essential difference between member functions and ordinary C functions lies in the implicit <span>this</span> pointer passing: ; Ordinary C function call push param2 ; Parameter 2 push param1 ; Parameter 1 call CFunction ; Direct call add rsp, 10h ; Clean up … Read more

Mastering C# HttpClient in 5 Steps: Effortlessly Handle HTTP Requests and Boost Efficiency by 300%!

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Mastering C# HttpClient in 5 Steps: Effortlessly Handle HTTP Requests and Boost Efficiency by 300%!

Welcometo like, share, and followto encourage me If you find this article useful, please 👇👇follow me👇👇 Let me accompany you on your journey to grow and succeed Hey, programming enthusiasts! Are you looking for a simple and effective way to handle HTTP requests in C#? Or have you tried other methods but are confused about … Read more

Kernel C/C++ Hybrid Programming Techniques from an Assembly Language Perspective

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Kernel C/C++ Hybrid Programming Techniques from an Assembly Language Perspective

Assembly Level Analysis of Header File Declaration Issues When C++ references a C header file without adding <span>extern "C"</span>, it leads to name mangling issues: ; C-style function without processing call ?ExAllocatePoolWithTag@@YAPEAXW4_POOL_TYPE@@KPEAD@Z ; C++ mangled name ; Correct usage with extern "C" call ExAllocatePoolWithTag ; Original C name The correct approach when including <span>ntifs.h</span> is: … Read more