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2.12. numastat
numastat 工具以每一个 NUMA 节点为基础了，显示处理器和操作系统的内存统计数据。
默认情况下，numastat 显示每个节点的 NUMA 从内核的内存分配器中缺失的系统统计数据。最佳性能表现为高
numa_hit 值和低 numa_miss 值。Numastat 也提供很多命令行选项来说明系统和进程的内存如何通过系统中 NUMA 节点进行分配。
交叉引用每个节点的 numastat 输出和每个 CPU 的 top 输出是很有用的，可以用来验证进程线程是在内存分配的同一节点上运行。
$ man numastat
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