请在PerfMon窗口上方的工具栏中单击+按钮，这样会打开一个对话框让您选择要监控的计数器，如图3a所示。

To get going, click on the + button on the toolbar at the top of the PerfMon screen. This brings up a dialog that lets you choose the counters you want to monitor, as in Figure 3a.

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打开的帮助窗口包含计数器的描述。

A help window containing the description of the counter opens.

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通过只收集需要的数据，您可以避免收集无关统计数据，而这些数据会在有限的维护窗口中提高CPU占用，增加不必要的负荷。

By collecting only the needed statistics, you can avoid collecting irrelevant statistics that drive up CPU overhead and create unnecessary workload inside limited maintenance Windows.

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