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。
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。
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。
The cost can be one of the following metrics: execution time per query execution, user CPU time per query execution, and system CPU time per query execution.
这里所说的成本可能是下面的度量之一：每次查询执行的执行时间、每次查询执行的用户CPU时间、以及每次查询执行的系统CPU时间。
The task accounts for its time with the CPU by adding its execution time to the virtual runtime and is then inserted back into the tree if runnable.
任务通过将其运行时间添加到虚拟运行时，说明其占用CPU的时间，然后如果可运行，再插回到树中。
In most practical application, context switch doesn't happen at some time tick, so sometime the execution of timer ISR is useless and wastes CPU time.
在实际应用中，并不是每个时钟节拍都有任务调度，所以有很多时钟中断服务程序的工作是多余的，浪费了CPU资源。
In most practical application, context switch doesn't happen at some time tick, so sometime the execution of timer ISR is useless and wastes CPU time.
在实际应用中，并不是每个时钟节拍都有任务调度，所以有很多时钟中断服务程序的工作是多余的，浪费了CPU资源。
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