基准测试时，规则1总是使优化。

When benchmarking, rule 1 is always enable optimizations.

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为使优化器能够使用可用的分布统计信息，带有具体值的谓词极为重要。

Predicates with concrete values are important for the optimizer to be able to use available distribution statistics.

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该管材8604支持软件控制的串器的产出，使优化电源和信号强度的系统。

The PEX 8604 supports software control of the SerDes outputs to allow optimization of power and signal strength in a system.

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