Domain controller CPU load
Data collector
• Category: Performance Counters
• Name: CPU Processor time
• Supported on: Windows Server 2016, Windows Server 2019, and Windows Server 2022
• Required permissions: When monitored locally and remotely, only domain user privilege is required and the user must be a part of the Performance Logs user group.Description
The Directory Analyzer agent monitors the Processor\% Processor Time performance counter on the domain controller. If the value of the performance counter goes above the configured threshold for a period exceeding the configured duration, the agent will set this alert condition.
It is also possible that the CPU load has increased due to some pathological condition in a particular application. For instance, Active Directory® itself requires substantial CPU resources when it is processing inherited Access Control Lists (ACLs). Active Directory can also require a lot of CPU resources when it processes complex, non-indexed directory searches.
Resolution
Domain controller page faults
Indicates that the performance of the server may be degraded because of too many page faults.
Data collector
• Category: Performance Counters
• Name: Memory page faults a second
• Supported on: Windows Server 2016, Windows Server 2019, and Windows Server 2022
• Required permissions: When monitored locally and remotely, only domain user privilege is required and the user must be a part of the Performance Logs user group.Description
The Directory Analyzer agent constantly monitors the Page Faults/sec performance counter on the domain controller. If this number exceeds the configured threshold, the agent will issue an alert.
A continuously high page fault rate is an indication that the server is running too many processes with insufficient real memory. If left unattended, Active Directory® performance will suffer greatly, and eventually the directory system agent (DSA) will be unable to service requests, which can result in failed logins and authentications, as well as the inability of some applications and services to run at all.
Resolution
1 Run the Windows NT Task Manager and open the Processes tab.
2 Select View | Select Columns.
3
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Supported on: Windows Server 2016, and Windows Server 2019 |
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Required permissions: Domain user privilege required. |
This error can occur if any of the following occurs:
File Replication Service is not running
Indicates the File Replication Service is currently not running on the domain controller.
Data collector
• Category: Windows Services
• Name: File Replication Service
• Supported on: Windows Server 2016, Windows Server 2019, and Windows Server 2022
• Required permissions: When monitored locally or remotely, domain administrator privilege is required.Description
The Directory Analyzer agent periodically checks to ensure the File Replication Service is running.
Resolution
Use the Services MCC snap-in or another SCP application to restart the File Replication Service.
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