Troubleshooting High CPU Load

First, open a shell from SSH or the serial/VGA console (option 8).

Typically one of these commands will include some obvious consumer of large amounts of system resources. For example, if the system CPU usage is high, it may be the packet filter. If a VPN process is using lots of CPU, the hardware may not be able to process more VPN traffic. If it is a NIC, see Hardware Tuning and Troubleshooting, etc.

If the solution is not obvious based on the output, post the collected information on the forum or contact support for further assistance.