Using System Monitor Counters - Page 2

 By Brien M. Posey
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DS Counters

The counters that begin with the letters DS refer to the Directory Service. The most important of these counters are self-explanatory. For example, the DS Directory Reads / Sec and DS Directory Writes / Sec count the number of Active Directory reads and writes per second, respectively. Another useful counter is the DS Threads in Use counter. You can use this counter to measure the impact that the directory services are having on your local machine.

"If you'd like more information on a specific counter, select the counter within the Performance Console's Add Counter dialog box and click Explain."

Kerberos Counters

There's really only one Kerberos-related counter that you need to be aware of: Kerberos Authentications. This counter tracks the number of times per second that clients use a Kerberos ticket to authenticate to the domain controller that you're monitoring.

LDAP Counters

As you may know, the Active Directory is fully extensible through the Lightweight Directory Access Protocol (LDAP) protocol. Therefore, the various LDAP counters are very helpful when trying to check up on your Active Directory. The LDAP-related counters allow you to check things like the LDAP bind time and LDAP successful binds per second. You can also view the current number of LDAP sessions and the number of LDAP searches per second. In the case of LDAP-related counters, you can easily determine the function of the counter by looking at the counter's name. Each of the LDAP counters use obvious names, such as LDAP Client Sessions.

XDS Counters

The primary XDS-related counter is the XDS Client Sessions counter. This counter tracks the current number of extended directory service connections made by clients. Usually, extended directory service connections are made by Windows 2000 services or administrative programs.


As you can see, you can use many different counters to monitor Active Directory. If you'd like more information on a specific counter, select the counter within the Performance Console's Add Counter dialog box and click the Explain button. You can also find explanations of some of the counters in the Windows 2000 Active Directory Service MCSE training kit from Microsoft Press. //

Brien M. Posey is an MCSE who works as a freelance writer. His past experience includes working as the director of information systems for a national chain of health care facilities and as a network engineer for the Department of Defense. Because of the extremely high volume of e-mail that Brien receives, it's impossible for him to respond to every message, although he does read them all.

This article was originally published on Oct 18, 2000
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