It seems to me that a compromise would be receiving the exam questions a day or two in advance, and then doing the actual test in class the ticking clock overhead.
在我看来，一个折衷的办法是提前一两天收到考题，然后在课堂上计时做实际的测试。
2
Performance results and the overhead in other operating environments with actual input data may be different than these test results.
带有实际输入数据的其他操作环境中的性能结果和开销可能与这些测试结果不同。
3
Instead, it reaches a point where the overhead of managing the service, synchronization, and resource demands exceeds the actual productive processing and throughput starts declining.