一只程序猿很黄很暴力的日记

一些基础概念：

Socket(s)：主板上面的物理 CPU 插槽。

Core(s)：一个 CPU 一般包含 2~4 个 core，即 Core(s) per socket。

Thread(s)：一个 core 包含多个可以并行处理任务的 thread，即 Thread(s) per core， thread 是单个独立的执行上下文，竞争 core 内寄存器等共享资源。

NUMA nodes：一个 socket 可以划分为多个 NUMA node。

图示：

An example of a two-node NUMA system and the way the CPU cores and memory pages are made available.

NOTE
Remote memory available via Interconnect is accessed only if VM1 from NUMA node 0 has a CPU core in NUMA node 1. In this case, the memory of NUMA node 1 will act as local for the third CPU core of VM1 (for example, if VM1 is allocated with CPU 4 in the diagram above), but at the same time, it will act as remote memory for the other