| _2025-04-21_15：39：23_ | 2025-04-21 15：39：23 | | 图解｜透明大页原理与实现-轻识 | | 原文链接失效了?试试备份 | | TAGs:内存 HugePage | | Summary: The article discusses the benefits of using Transparent Huge Pages (THP) in Linux systems, which is an alternative to the standard large pages. THP simplifies the process of using large pages by automatically merging contiguous virtual memory addresses larger than 2MB into a single large page, reducing the need for TLB lookups, page table entries, and page faults. The core idea of THP is to continuously scan a process's virtual memory space and merge physical memory into a large page if the condition is met. The article also explains the logic steps of how THP works and how it differs from standard large pages.本文讨论了在 Linux 系统中使用透明大页面 （THP） 的好处，它是标准大页面的替代方案。THP 通过自动将大于 2MB 的连续虚拟内存地址合并到单个大页面中，减少了对 TLB 查找、页表条目和页面错误的需求，从而简化了使用大页面的过程。THP 的核心思想是持续扫描进程的虚拟内存空间，并在满足条件时将物理内存合并为一个大页面。本文还解释了 THP 如何工作的逻辑步骤以及它与标准大页面的不同之处。 | |
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