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8.2. NUMA 内存分配策略
以下三种策略定义了系统中节点对内存的分配：
Strict- 目标节点中不能分配内存时，分配将被默认操作转进至其他节点。严格的策略意味着，当目标节点中不能分配内存时，分配将会失效。
Interleave- 内存页面将被分配至一项节点掩码指定的节点，但将以轮循机制的方式分布。
Preferred- 内存将从单一最优内存节点分配。如果内存并不充足，内存可以从其他节点分配。
XML 配置启用所需策略：
<numatune>
<memory mode='preferred' nodeset='0'>
</numatune>
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