Experimental comparison with the previous work indicates that it accelerates the sampling speed in the large transaction databases which reduces CPU execution time, and possesses a good scalability.

通过实验分析表明，该算法明显地加快了大事务数据库中采样的速度，从而降低了CPU时间，而且具有很好的可扩展性。

youdao

Elapsed CPU time: This is the CPU time consumed by the thread during execution, in nanoseconds.

运行CPU时间：这是线程在执行期间消耗的CPU时间，以纳秒为单位。

youdao

The reason for using binding parameters is to ask the database to parse your SQL once and reuse the generated execution plan for subsequent repeat requests, which saves both CPU time and memory.

使用绑定参数的原因是让数据库一次解析sql，对后续的重复请求复用生成好的执行计划，这样做节省了CPU时间和内存。

youdao