Cache Partitioning
Cache partitioning is a technique in computer architecture and software optimization that divides a cache memory into multiple partitions or ways to improve performance, reduce contention, and manage resources more effectively. It involves allocating specific portions of the cache to different processes, threads, or data types to prevent interference and enhance predictability in systems with shared caches. This concept is commonly applied in multi-core processors, real-time systems, and high-performance computing to mitigate cache thrashing and ensure fair resource allocation.
Developers should learn and use cache partitioning when working on performance-critical applications, such as real-time systems, embedded software, or multi-threaded programs, where predictable latency and reduced cache contention are essential. It is particularly valuable in scenarios with shared caches in multi-core environments to avoid performance degradation caused by cache pollution or unfair resource usage, enabling better control over memory access patterns and system responsiveness.