This article explores Linux's dynamic memory management, covering virtual and physical memory, user and kernel space separation, paging and segmentation, mmap and brk allocation methods, the slab allocator, malloc/free behavior, and the system's memory reclamation strategies including swap usage.
The article traces the evolution of memory management in 1960s mainframes, explaining fixed partitioning, its inefficiencies, the shift to dynamic partitioning, the problem of fragmentation, and how overlay techniques paved the way for modern virtual memory.
This article explains the role of glibc malloc in dynamic memory allocation, describes its internal data structures and allocation/free algorithms, provides a C code example, and offers practical optimization tips and common pitfalls for safe and efficient memory management.
This article explains the historical reasons behind the invention of pointers, walks through early memory manipulation, variable abstraction, the need for shared data, and demonstrates how pointers enable address passing, dynamic memory allocation, and complex data structures such as linked lists and trees, all with clear C code examples.
iQIYI’s ad engine team introduced an intelligent compute allocation system that quantifies traffic value and unified compute cost, uses elastic elimination and a dynamic allocation framework to maximize revenue under fixed compute limits, delivering over 30% inventory growth, modest consumption rise, and near‑perfect availability.
This article provides a comprehensive overview of C++ memory management, covering stack vs heap allocation, deep vs shallow copying, common errors such as leaks, dangling pointers, double frees, and offers practical techniques like custom new/delete overloads, smart pointers, RAII, and tools for detecting memory problems.
FreeRTOS supports both static and dynamic memory allocation, allowing tasks, timers, semaphores and mutexes to use either a pre‑allocated region or the system heap, provides pvPortMalloc/vPortFree APIs, and offers five heap schemes (heap_1‑5) ranging from simple non‑freeing allocation to multi‑region coalescing management for flexible embedded applications.
Memory leaks, caused by unreleased dynamic allocations, can accumulate and lead to memory overflow, severely degrading performance or crashing applications; this article explains leak definitions, causes, classifications (persistent, intermittent, one‑time, implicit), overflow reasons, and practical mitigation steps such as proper allocation, deallocation, and JVM tuning.
