1. A system, comprising: one or more functional units, wherein at least one functional unit of the one or more functional units includes at least one monitor circuit, wherein the at least one monitor circuit is configured to: monitor an operational parameter associated with a corresponding functional unit; perform a comparison of a value of the operational parameter to a first threshold value; generate an interrupt based on a result of the comparison; and send data indicative of the operational parameter; and a power manager processor coupled to a volatile memory, wherein the power manager processor is configured to: in response to receiving the interrupt from the at least one monitor circuit: exit a low power mode; receive the data from the at least one monitor circuit; perform a statistical analysis of the data to generate analysis results, wherein the statistical analysis includes calculating an average; adjust one or more performance settings associated with the at least one functional unit in response to a determination that the analysis result is greater than a second threshold value; and based on the results of the comparison, disable further interrupts and enable a timer circuit.