https://plumephp.com/tags/%E5%B1%80%E9%83%A8%E6%80%A7/Recent content in 局部性 on PlumePHPHugozh-CNSun, 27 Sep 2026 00:00:00 +0000https://plumephp.com/cs-cache-coherence/Sun, 27 Sep 2026 00:00:00 +0000https://plumephp.com/cs-cache-coherence/<h2 id="1-存储层级与局部性">1. 存储层级与局部性</h2> <h3 id="11-存储层级memory-hierarchy">1.1 存储层级（Memory Hierarchy）</h3> <blockquote> <p>现代 CPU 用金字塔式的存储层级弥合「处理器速度」与「内存速度」的数量级差距。越靠近 CPU 越快、越小、越贵；越远离 CPU 越慢、越大、越便宜。Cache 就是缓解&quot;内存墙&quot;（memory wall）的核心设施。</p>