<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/"><channel><title>CPU缓存 on Hical</title><link>https://hicalio.cn/tags/cpu%E7%BC%93%E5%AD%98/</link><description>Recent content in CPU缓存 on Hical</description><generator>Hugo</generator><language>zh-cn</language><lastBuildDate>Fri, 15 May 2026 00:00:00 +0000</lastBuildDate><atom:link href="https://hicalio.cn/tags/cpu%E7%BC%93%E5%AD%98/index.xml" rel="self" type="application/rss+xml"/><item><title>缓存行对 C++ 性能的影响有多大？实测告诉你</title><link>https://hicalio.cn/posts/%E7%BC%93%E5%AD%98%E8%A1%8C%E5%AF%B9%E6%80%A7%E8%83%BD%E7%9A%84%E5%BD%B1%E5%93%8D/</link><pubDate>Fri, 15 May 2026 00:00:00 +0000</pubDate><guid>https://hicalio.cn/posts/%E7%BC%93%E5%AD%98%E8%A1%8C%E5%AF%B9%E6%80%A7%E8%83%BD%E7%9A%84%E5%BD%B1%E5%93%8D/</guid><description>从 cache line 原理出发，实测 vector vs unordered_map 的性能差距，解析 false sharing 的成因与修复，总结缓存友好的数据结构设计原则。</description></item></channel></rss>