java是什么导致jmh测量中的错误？

Question

我想知道在jmh测试的分数结果中出现误差幅度的可能原因是什么。在一天结束时，它是在多次迭代中执行的相同代码

Answer 1

好吧，上钩并假设这不是4月1日的恶作剧。你可以从这里开始：

• http://en.wikipedia.org/wiki/Observational_error
• http://en.wikipedia.org/wiki/Measurement_uncertainty

"No measurement is exact. When a quantity is measured, the outcome depends on the measuring system, the measurement procedure, the skill of the operator, the environment, and other effects.[1] Even if the quantity were to be measured several times, in the same way and in the same circumstances, a different measured value would in general be obtained each time, assuming the measuring system has sufficient resolution to distinguish between the values."