Troubleshoot resource issues
The FortiMail unit is suffering from sluggish or stalled performance.
Use the CLI to view a list of the most system-intensive processes. This may show processes that are hogging resources. For example:
diagnose system top 10
The above command generates a report of processes every 10 seconds. The report provides the process names, their process ID (pid), status, CPU usage, and memory usage.
The report continues to refresh and display in the CLI window until you enter