If the system resource usage appears to be abnormally high according to the System Resource widget on the dashboard or the CLI command:

you can view the current consumption by each process by entering this CLI command:

The above command generates a list of processes every 10 seconds. It includes the process names, their process ID (pid), status, CPU usage, and memory usage.

The report continues to refresh and display in the CLI until you press q (quit).

Once you locate an offending PID, you can terminate it:

If the issue recurs, and corresponds with a hardware or configuration change, you may need to change the configuration (especially frequent logging and high resolution video streams), reduce traffic load or contact Fortinet Technical Support to prevent the issue from recurring.