一些DBA喜欢设置通用阈值集，或者对他们对计数器设置的限定符加以限制，因为他们对多个DB2实例使用同一个阈值集。
Some DBAs prefer to keep their threshold sets generic or to limit the qualifiers they place on the counters because they use the same threshold set for multiple DB2 instances.
第一个条件的限制使volatile变量不能用作线程安全计数器。
The first condition disqualifies volatile variables from being used as thread-safe counters.
在表1中，如果所有相关的架构计数器为低，这暗示系统没有遭受任何系统限制动作。
In Table 1, if all related architecture counters are low, this suggests that the system does not suffer from any system bound actions.
基于可编程序控制器（PLC）的水轮机调速器，受PLC内部高速计数器最高计数频率的限制，频率测量大多通过PLC外部单元来实现。
Owing to the limited frequency of the internal high-speed counter of PLC, the peripheral unit of PLC is used for PLC-based frequency measurement of hydraulic turbine governors.
若要避免产生的记忆体需求，变得无限制，维护的200的范例，每个效能计数器的最大值。
To prevent the resulting memory requirements from growing unbounded, a maximum of 200 samples for each performance counter is maintained.
若要避免产生的记忆体需求，变得无限制，维护的200的范例，每个效能计数器的最大值。
To prevent the resulting memory requirements from growing unbounded, a maximum of 200 samples for each performance counter is maintained.
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