Server Management and Monitoring - MCTS Guide to Microsoft Windows Server 2008 Active Directory Configuration - page 534

Figure 13-13

The Add Counters dialog box

5. Click the Show description check box at the bottom so that you can see descriptions of coun-
ters you select.
6. Scroll through available counters to see what type of data can be monitored. Click
PhysicalDisk . The Instances of selected object list box displays the physical disk objects you
can select. You can monitor just one disk or multiple disks, or add a counter representing
the total counter values for all disks. Click 0 C: (assuming disk 0 contains the C drive), click
the Add button, and then click OK .
7. Notice that several counters have been added to Performance Monitor. In the bottom pane,
click the Avg. Disk Bytes/Transfer counter. Emphasize it in the display by clicking the
Highlight toolbar icon. If the counter isn't showing much activity, create some activity by
opening and then closing Internet Explorer.
8. Right-click Avg. Disk Bytes/Transfer and click Remove All Counters . When prompted to
confirm, click OK .
9. Click the Add toolbar icon. In the Add Counters dialog box, click to expand PhysicalDisk .
To select a counter for PhysicalDisk, click % Disk Time . (If necessary, verify that the Show
description check box is selected. You might need to check it whenever you open this dialog
box.) Read the description of the counter, and then click Add .
10. Click to expand Processor , and click % Interrupt Time . Read the description, and then click
Add . Click to expand System , and click Processor Queue Length . Read the description, and then
click Add . Queue counters indicate how many activities are waiting for work to be done. For
most objects with queue counters (such as PhysicalDisk and Network Interface), a sustained
queue value of more than a few items in the queue often indicates a bottleneck. Click OK .