如今，内存容量已经成为妨碍工作负载借助处理器的力量进行线性扩展的主要瓶颈之一。
Today, memory capacity is one of the major bottlenecks that prevents a workload to scale linearly with the power of processors.
这个内存扩展因数为操作系统提供了有关用户尝试实现的有效内存容量的输入，即OS应尝试纳入内存的数据量。
This memory expansion factor provides input to the operating system on the effective memory capacity the user is trying to achieve, and thus, the amount of data the OS should try to fit into memory.
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