Overload warning provides the notification component of the Load policy. When a server sustains the preset load level (set by the attribute LoadWarningLevel) for a preset time (set by the attribute LoadTimeThreshold), VCS invokes the loadwarning trigger.

The loadwarning trigger is a user-defined script or application designed to carry out specific actions. It is invoked once, when system load exceeds the LoadWarningLevel for the LoadTimeThreshold. It is not invoked again until the LoadTimeCounter, which determines how many seconds system load has been above LoadWarningLevel, is reset.