Percentage of system CPU time percentage system time is the percentage of non-idle processor time spent in system mode.
Percentage of System CPU Time(系统CPU时间百分比)系统时间百分比是系统模式下非空闲处理器时间的百分比。
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。
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