# CPU load and memory usage

The shown values of CPU load and memory usage are performance related indicators.

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.