虽然不是非常完美，但这些技术能造成分配内存量和实际使用量之间的实际差异。

While not perfect, these techniques can result in a substantial difference between the amount of memory that is allocated and the amount actually used.

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以存储空间为例，可以通过配置嵌入式Informix实例监视磁盘使用量，当任何DBspace消耗了分配给它的空间的80%时，自动地添加存储空间。

Using the example of storage space, the embedded Informix instance could be configured to monitor disk usage and add more storage when any DBspace consumes 80 percent of its allocated space.

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仿真实验结果表明，随着分配带宽的减少，LCT算法能够有效地降低多播树的高度和网络资源使用量，并保持较低的多播树延时半径增幅。

The simulation results show that LCT could reduce both hops and network resource usage of the tree effectively, and keep a little increase in delay radius while the allocated bandwidth decreases.

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