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NTDS Object

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

The NTDS object consists of counters that provide statistics about the activity of the Active Directory directory service. The object provides information about the following:

  • The Name Service Provider Interface (NSPI), used to facilitate communication between Active Directory and Exchange Directory Service (XDS)

  • The Local Security Authority (LSA), a protected subsystem that maintains security for the local computer

  • The Security Accounts Manager (SAM) interface, which provides compatibility between Windows Server 2003, Windows 2000, and Windows NT 4.0 domains

  • The Lightweight Directory Access Protocol (LDAP) interface, which provides the application programming interface (API) for LDAP clients and exposes the Active Directory Services Interface (ADSI) so additional applications may be written that can talk to Active Directory

  • The Directory System Agent (DSA), the Active Directory process that runs on each domain controller and manages all the directory service functions

  • The Knowledge Consistency Checker (KCC), an Active Directory component that is responsible for generating the replication topology between domain controllers

Counter Name Description Counter Type

AB ANR/sec

Shows the rate at which Address Book clients perform Ambiguous Name Resolutions (ANR) operations.

PERF_COUNTER_COUNTER

AB Browses/sec

Shows the rate at which Address Book clients perform browse operations.

PERF_COUNTER_COUNTER

AB Client Sessions

Shows the number of connected Address Book client sessions.

PERF_COUNTER_RAWCOUNT

AB Matches/sec

Shows the rate at which Address Book clients perform find operations.

PERF_COUNTER_COUNTER

AB Property Reads/sec

Shows the rate at which Address Book clients perform property read operations.

PERF_COUNTER_COUNTER

AB Proxy Lookups/sec

Shows the rate at which proxy clients perform search operations.

PERF_COUNTER_COUNTER

AB Searches/sec

Shows the rate at which Address Book clients perform key search operations.

PERF_COUNTER_COUNTER

DRA Highest USN Committed (High part)

Shows the high-order 32 bits of the highest update sequence number (USN) committed on the DSA.

PERF_COUNTER_RAWCOUNT

DRA Highest USN Committed (Low part)

Shows the low-order 32 bits of the highest USN committed on the DSA.

PERF_COUNTER_RAWCOUNT

DRA Highest USN Issued (High part)

Shows the high-order 32 bits of the highest USN issued on the DSA.

PERF_COUNTER_RAWCOUNT

DRA Highest USN Issued (Low part)

Shows the low-order 32 bits of the highest USN issued on the DSA.

PERF_COUNTER_RAWCOUNT

DRA Inbound Bytes Compressed (Between Sites, After Compression)/sec

Shows the compressed size of inbound compressed replication data (size after compression, from DSAs in other sites).

PERF_COUNTER_COUNTER

DRA Inbound Bytes Compressed (Between Sites, Before Compression)/sec

Shows the original size of inbound compressed replication data (size before compression, from DSAs in other sites).

PERF_COUNTER_COUNTER

DRA Inbound Bytes Not Compressed (Within Site)/sec

Shows the number of incoming bytes replicated that were not compressed at the source (that is, from DSAs in the same site).

PERF_COUNTER_COUNTER

DRA Inbound Bytes Total/sec

Shows the total number of bytes replicated in. This counter is the sum of the number of uncompressed bytes (never compressed) and the number of compressed bytes (after compression).

PERF_COUNTER_COUNTER

DRA Inbound Full Sync Objects Remaining

Shows the number of objects remaining until the full synchronization is completed (when set).

PERF_COUNTER_RAWCOUNT

DRA Inbound Object Updates Remaining in Packet

Shows the number of object updates received in the current directory replication update packet that have not yet been applied to the local server.

PERF_COUNTER_RAWCOUNT

DRA Inbound Objects Applied/sec

Shows the rate at which replication updates received from replication partners are applied by the local directory service. This counter excludes changes that are received but not applied (because, for example, the change has already been made). This indicates how much replication update activity is occurring on the server as a result of changes generated on other servers.

PERF_COUNTER_COUNTER

DRA Inbound Objects Filtered/sec

Shows the number of objects received from inbound replication partners that contained no updates that needed to be applied.

PERF_COUNTER_COUNTER

DRA Inbound Objects/sec

Shows the number of objects received from neighbors through inbound replication. A neighbor is a domain controller from which the local domain controller replicates locally.

PERF_COUNTER_COUNTER

DRA Inbound Properties Applied/sec

Shows the number of properties that are updated due to the incoming property's winning the reconciliation logic that determines the final value to be replicated.

PERF_COUNTER_COUNTER

DRA Inbound Properties Filtered/sec

Shows the number of property changes that are received during the replication that we have already seen.

PERF_COUNTER_COUNTER

DRA Inbound Properties Total/sec

Shows the total number of object properties received from inbound replication partners.

PERF_COUNTER_COUNTER

DRA Inbound Values (DNs only)/sec

Shows the number of object property values received from inbound replication partners that are distinguished names (DNs) that reference other objects. DN values, such as group or distribution list memberships, are generally more expensive to apply than other kinds of values.

PERF_COUNTER_COUNTER

DRA Inbound Values Total/sec

Shows the total number of object property values received from inbound replication partners. Each inbound object has one or more properties, and each property has zero or more values. Zero values indicate property removal.

PERF_COUNTER_COUNTER

DRA Outbound Bytes Compressed (Between Sites, After Compression)/sec

Shows the compressed size of outbound compressed replication data (size after compression, from DSAs in other sites).

PERF_COUNTER_COUNTER

DRA Outbound Bytes Compressed (Between Sites, Before Compression)/sec

Shows the original size of outbound compressed replication data (size before compression, from DSAs in other sites).

PERF_COUNTER_COUNTER

DRA Outbound Bytes Not Compressed (Within Site)/sec

Shows the number of bytes replicated out that were not compressed (that is, from DSAs in the same site).

PERF_COUNTER_COUNTER

DRA Outbound Bytes Total/sec

Shows the total number of bytes replicated out. This counter is the sum of the number of uncompressed bytes (never compressed) and the number of compressed bytes (after compression).

PERF_COUNTER_COUNTER

DRA Outbound Objects Filtered/sec

Shows the number of objects that were determined by outbound replication to have no updates that the outbound partner did not already have.

PERF_COUNTER_COUNTER

DRA Outbound Objects/sec

Shows the number of objects replicated out.

PERF_COUNTER_COUNTER

DRA Outbound Properties/sec

Shows the number of properties replicated out.

PERF_COUNTER_COUNTER

DRA Outbound Values (DNs only)/sec

Shows the number of object property values containing DNs sent to outbound replication partners. DN values, such as group or distribution list memberships, are generally more expensive to read than other kinds of values.

PERF_COUNTER_COUNTER

DRA Outbound Values Total/sec

Shows the number of object property values sent to outbound replication partners.

PERF_COUNTER_COUNTER

DRA Pending Replication Synchronizations

Shows the number of directory synchronizations that are queued for this server but not yet processed.

PERF_COUNTER_RAWCOUNT

DRA Reads

Shows the percentage of directory reads coming from the directory replication agent (DRA).

PERF_RAW_FRACTION

DRA Searches

Shows the percentage of directory searches coming from the DRA.

PERF_RAW_FRACTION

DRA Sync Failures on Schema Mismatch

Shows the number of synchronization requests made to neighbors that failed because their schema are not synchronized.

PERF_COUNTER_RAWCOUNT

DRA Sync Requests Made

Shows the number of synchronization requests made to neighbors.

PERF_COUNTER_RAWCOUNT

DRA Sync Requests Successful

Shows the number of synchronization requests made to neighbors that were successfully returned.

PERF_COUNTER_RAWCOUNT

DRA Writes

Shows the percentage of directory writes coming from the DRA.

PERF_RAW_FRACTION

DS Client Binds/sec

Shows the number of Ntdsapi.dll binds per second serviced by this domain controller.

PERF_COUNTER_COUNTER

DS Client Name Translations/sec

Shows the number of Ntdsapi.dll name translations per second serviced by this domain controller.

PERF_COUNTER_COUNTER

DS Directory Reads/sec

Shows the number of directory reads per second.

PERF_COUNTER_COUNTER

DS Directory Searches/sec

Shows the number of directory searches per second.

PERF_COUNTER_COUNTER

DS Directory Writes/sec

Shows the number of directory writes per second.

PERF_COUNTER_COUNTER

DS Monitor List Size

Shows the number of requests to be notified when objects are updated that are currently registered with this DSA.

PERF_COUNTER_RAWCOUNT

DS Name Cache hit rate

Shows the percentage of directory object name component lookups that are satisfied out of the DSA's name cache.

PERF_RAW_FRACTION

DS Notify Queue Size

Shows the number of pending update notifications that have been queued but not yet transmitted to clients.

PERF_COUNTER_RAWCOUNT

DS Other Reads

Shows the percentage of directory reads that do not come from SAM, DRA, LDAP, LSA, XDS, KCC, or NSPI.

PERF_RAW_FRACTION

DS Other Searches

Shows the percentage of directory searches that do not come from SAM, DRA, LDAP, LSA, XDS, KCC, or NSPI.

PERF_RAW_FRACTION

DS Other Writes

Shows the percentage of directory writes that do not come from SAM, DRA, LDAP, LSA, XDS, KCC, or NSPI.

PERF_RAW_FRACTION

DS Search sub-operations/sec

Shows the number of search suboperations per second. One search operation is made up of many suboperations. Each suboperation roughly corresponds to an object that the search causes the directory service to consider.

PERF_COUNTER_COUNTER

DS Security Descriptor Propagations Events

Shows the number of security descriptor propagation events that are queued but not yet processed.

PERF_COUNTER_RAWCOUNT

DS Security Descriptor Propagator Average Exclusion Time

Shows the average length of time that the security descriptor propagator spends waiting for exclusive access to database elements during a security descriptor propagation suboperation.

PERF_COUNTER_RAWCOUNT

DS Security Descriptor Propagator Runtime Queue

Shows the number of objects that remain to be examined while the current directory service security descriptor propagator event is being processed.

PERF_COUNTER_RAWCOUNT

DS Security Descriptor sub-operations/sec

Shows the number of security descriptor propagation suboperations per second. One security descriptor propagation operation is made up of many suboperations.

PERF_COUNTER_COUNTER

DS Server Binds/sec

Shows the number of domain controller–to–domain controller binds per second that are serviced by this domain controller.

PERF_COUNTER_COUNTER

DS Server Name Translations/sec

Shows the number of domain controller–to–domain controller name translations per second that are serviced by this domain controller.

PERF_COUNTER_COUNTER

DS Threads in Use

Shows the current number of threads in use by the directory service (which is different from the number of threads in the directory service process). This is the number of threads currently servicing client API calls; it can be used to indicate whether additional processors should be used.

PERF_COUNTER_RAWCOUNT

KCC Reads

Shows the percentage of directory reads that come from KCC.

PERF_RAW_FRACTION

KCC Searches

Shows the percentage of directory searches that come from KCC.

PERF_RAW_FRACTION

KCC Writes

Shows the percentage of directory writes that come from KCC.

PERF_RAW_FRACTION

KDC AS Requests

Shows the number of Authentication Server (AS) requests serviced by the Kerberos Key Distribution Center (KDC) per second. AS requests are used by the client to obtain a ticket-granting ticket.

PERF_COUNTER_COUNTER

KDC TGS Requests

Shows the number of Ticket Granting Server (TGS) requests serviced by the KDC per second. TGS requests are used by the client to obtain a ticket to a resource.

PERF_COUNTER_COUNTER

Kerberos Authentications

Shows the number of times per second that clients use a ticket to this domain controller to authenticate to this domain controller.

PERF_COUNTER_COUNTER

LDAP Active Threads

Shows the current number of threads in use by the LDAP subsystem of the local directory service.

PERF_COUNTER_RAWCOUNT

LDAP Bind Time

Shows the time, in milliseconds, taken for the last successful LDAP bind.

PERF_COUNTER_RAWCOUNT

LDAP Client Sessions

Shows the number of currently connected LDAP client sessions.

PERF_COUNTER_RAWCOUNT

LDAP Searches

Shows the percentage of directory searches coming from LDAP.

PERF_RAW_FRACTION

LDAP Searches/sec

Shows the rate at which LDAP clients perform search operations.

PERF_COUNTER_COUNTER

LDAP Successful Binds

Shows the percentage of LDAP bind attempts that are successful.

PERF_RAW_FRACTION

LDAP Successful Binds/sec

Shows the number of LDAP binds per second.

PERF_COUNTER_COUNTER

LDAP UDP operations/sec

Shows the number of User Datagram Protocol (UDP) operations that the LDAP server is processing per second.

PERF_COUNTER_COUNTER

LDAP Writes

Shows the percentage of directory writes coming from LDAP.

PERF_RAW_FRACTION

LDAP Writes/sec

Shows the rate at which LDAP clients perform write operations.

PERF_COUNTER_COUNTER

LSA Reads

Shows the percentage of directory reads that come from LSA.

PERF_RAW_FRACTION

LSA Searches

Shows the percentage of directory searches that come from LSA.

PERF_RAW_FRACTION

LSA Writes

Shows the percentage of directory writes that come from LSA.

PERF_RAW_FRACTION

NSPI Reads

Shows the percentage of directory reads that come from NSPI.

PERF_RAW_FRACTION

NSPI Searches

Shows the percentage of directory searches that come from NSPI.

PERF_RAW_FRACTION

NSPI Writes

Shows the percentage of directory writes that come from NSPI.

PERF_RAW_FRACTION

NTLM Authentications

Shows the number of NTLM authentications per second serviced by this domain controller.

PERF_COUNTER_COUNTER

SAM Account Group Membership Evaluations/sec

Shows the number of SAM Account Group Membership Evaluations per second.

PERF_COUNTER_COUNTER

SAM Create Machine Attempts/sec

Shows the number of SAM create machine attempts per second.

PERF_COUNTER_COUNTER

SAM Create User Attempts/sec

Shows the number of SAM create-user attempts per second.

PERF_COUNTER_COUNTER

SAM Enumerations/sec

Shows the number of SAM enumerations per second.

PERF_COUNTER_COUNTER

SAM GC Evaluations/sec

Shows the number of SAM global catalog evaluations per second.

PERF_COUNTER_COUNTER

SAM Membership Changes/sec

Shows the number of SAM membership changes.

PERF_COUNTER_COUNTER

SAM Non-Transitive Membership Evaluations/sec

Shows the number of SAM nontransitive membership evaluations per second.

PERF_COUNTER_COUNTER

SAM Password Changes/sec

Shows the number of SAM password changes per second.

PERF_COUNTER_COUNTER

SAM Query Displays/sec

Shows the number of SAM query displays per second.

PERF_COUNTER_COUNTER

SAM Reads

Shows the percentage of directory reads that come from SAM.

PERF_RAW_FRACTION

SAM Resource Group Membership Evaluations/sec

Shows the number of SAM resource group membership evaluations per second.

PERF_COUNTER_COUNTER

SAM Searches

Shows the percentage of directory searches that come from SAM.

PERF_RAW_FRACTION

SAM Successful Create Machines/sec

Shows the number of machines that were successfully created per second.

PERF_COUNTER_COUNTER

SAM Successful Create Users/sec

Shows the number of users that were successfully created per second.

PERF_COUNTER_COUNTER

SAM Transitive Membership Evaluations/sec

Shows the number of SAM transitive membership evaluations per second.

PERF_COUNTER_COUNTER

SAM Universal Group Membership Evaluations/sec

Shows the number of SAM universal group membership evaluations per second.

PERF_COUNTER_COUNTER

SAM Writes

Shows the percentage of directory writes that come from SAM.

PERF_RAW_FRACTION

XDS Client Sessions

Shows the number of connected XDS client sessions. This indicates the number of connections from other Windows Server 2003 services and the Exchange Administrator program.

PERF_COUNTER_RAWCOUNT

XDS Reads

Shows the percentage of directory reads that come from XDS.

PERF_RAW_FRACTION

XDS Searches

Shows the percentage of directory searches that come from XDS.

PERF_RAW_FRACTION

XDS Writes

Shows the percentage of directory writes that come from XDS.

PERF_RAW_FRACTION