Troubleshooting Missing CPU and RAM

Overview

If you have the Hydra Agent installed on your hosts and can see the User Processes (indicating the Hydra Agent is working), but you do not see the CPU or RAM charts, it may be because the PerfMon counters are not functioning. You might also see values that are simply wrong, e.g., 100% RAM all the time. This section explains how to verify these counters and repair them if necessary.

Verifying CPU and RAM Performance Counters

1. Open Performance Monitor
   On one of the affected hosts, launch Performance Monitor (perfmon.exe).

2. Check CPU and RAM Counters

   1. CPU: Processor Information > % Processor Time

   2. RAM: Memory > Available MBytes

3. Observe the Counters
   You will likely notice that the counters are missing or return errors, indicating an issue with the Performance Monitor counters on the host.

Checking and Repairing Performance Counters

To resolve this issue:

1. Run as Administrator
   Open a Command Prompt or PowerShell window as Administrator.

2. Rebuild the Counters
   Run the following command:

lodctr /R

This will rebuild the Performance Monitor environment registry keys from scratch. You may need to reboot the system for the changes to take effect.

3. Optional Diagnostics
   You can also run lodctr /q to help diagnose problems with performance counters.

4. Apply to Golden Image
   After verifying the procedure works on an existing host, you will likely need to apply it to your golden image.

For detailed instructions and troubleshooting options, see the Microsoft documentation.