If you're using the same trace system for all your components, you'll be left to tie together multiple outputs from systems with potentially unsynchronized internal clocks.
如果对所有组件使用相同的跟踪系统，您将被迫协调系统的多个输出，从而可能面临内部时钟不同步的风险。
Outside-in design - start with the outputs of the system and investigate why they are needed and how the software can provide them (comes from BDD).
从外到内的设计模式，先从系统的输出结果开始，调查为什么需要它们，以及软件如何提供这些功能(来自BDD)。
Every test case related to the performance requirements essentially describes all inputs to the system as well as all outputs expected from the system.
每个测试用例都是针对性能需求设计的，从根本上描述了系统的所有输入和预计的系统输出。
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