这种过量内存使用并不一定会影响性能，但当jvm的垃圾收集功能执行时，受影响的应用程序的响应能力将大幅降低。

Such excessive memory usage does not necessarily have a performance impact, but when the JVM's garbage collection takes place, the responsiveness of the affected applications can suffer dramatically.

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在发生“过量使用”时，Hypervisor使用VIOS上的分页设备存储过剩的逻辑内存。

In the case of "over-commitment," the Hypervisor backs the excess logical memory using the paging devices on the VIOS.

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