# CPU load and memory usage

The shown values of CPU load and memory usage are performance related indicators but do not include the real-time application.

The CPU load value indicates the amount of time the CPU is active. This value is a moving average and can therefore be up to 100 % when starting an application. If the value remains near 100 % the system might be overloaded.

The memory usage value indicates the amount of used random-access memory. If the value remains near 100 % the system might be overloaded.

A system overload can be caused for example by very big Node-RED flows.