通常情况下没有进行复位而收集的数据不是很有用，因为计数器的时间跨度较长，包括随着负荷起伏跌宕截然不同的工作负载。
Typically the data collected without a reset is not very useful because the counters span a longer period of time, including drastically different workloads along peaks and valleys in load.
我们可以在序列化之前模糊化该数据，将数位循环左移一位，然后在反序列化之后复位。
We can obscure this data by rotating the bits once to the left before serialization, and then rotate them back after deserialization.
一旦终止或重新启动实例或数据库，计数器便会复位。
Counters are reset when you stop and restart an instance or database.
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