Linux Memory Leak Analysis In Linux system administration, a memory leak is a common performance issue that can lead to resource exhaustion, performance degradation, or crashes. A memory leak refers to memory allocated by a program that is not properly released, gradually accumulating and occupying memory. According to the official Valgrind report, memory leaks account … Read more
Recently, a developer in the community submitted an issue regarding a memory leak in the HTTP module, which affects the Node.js HTTP client. However, this is a rather special scenario that generally does not occur unless the server maliciously attacks the client. A pull request (PR) has recently been submitted to fix this issue, and … Read more
C++ multithreading programming has always been a highly technical topic. It can bring significant performance improvements, but improper handling of details can lead to serious issues. With the popularity of multi-core processors, many developers choose to introduce multithreading to optimize program performance when facing compute-intensive tasks. However, C++ multithreading programming is not as simple as … Read more
Performance bottleneck analysis and flame graph generation based on pprof A comprehensive guide on using Golang pprof How to diagnose memory leak issues in programs written in C and Go. This article provides specific commands and practical examples for diagnosing memory leaks in C and Go programs, using system tools and language features for layered … Read more
Introduction This article is recorded in February 2025 and is documented here. In the production environment, one of the business system servers has had its memory consistently around 95% for the past few months. Last year, this system was reported as an innovative system, so preparations for the innovative components began right after the New … Read more
1. What is Memory Leak and Its Types What is Memory Leak? A memory leak refers to a situation where a program fails to release memory that is no longer in use after dynamically allocating it, due to negligence or errors. Memory leak does not mean that the memory physically disappears, but rather that the … Read more
Master the skills of identifying, troubleshooting, and preventing C++ memory leaks, learn to use practical tools to quickly locate issues, and establish good memory management habits. 🎯 Use Cases • Memory Leak Detection: Continuous memory growth during program execution • Code Review: Preventive checks for potential memory issues • Performance Optimization: Addressing excessive memory usage … Read more
Memory leaks occur only in heap memory; they do not happen in stack memory. This is because stack memory automatically releases space after it has been allocated.What is heap memory? How is it stored? First, let’s introduce how heap memory is stored inC code. The function used to dynamically allocate heap memory inC code ismalloc, … Read more
Introduction: Currently, memory defects such as out-of-bounds writes or reads, or memory leaks (memory that has been allocated but never freed) can produce hard-to-track bugs, so it’s best to check them as early as possible. Valgrind is a general-purpose tool for detecting memory defects and memory leaks. This article will use Valgrind to warn about … Read more
Top Five Memory Issues Issue Type Frequency Severity Typical Symptoms Memory Leak 45% ⭐⭐⭐⭐ Memory continuously grows, eventually OOM Dangling Pointer 25% ⭐⭐⭐⭐⭐ Random crashes, segmentation faults Buffer Overflow 15% ⭐⭐⭐⭐⭐ Data corruption, security vulnerabilities Double Free 10% ⭐⭐⭐⭐ Heap corruption, unpredictable crashes Uninitialized 5% ⭐⭐⭐ Random values, logical errors Typical Problem Code： // 💀 … Read more