A method, apparatus, and system for regulating resource usage of a backup application is disclosed. The operations comprise: continuously monitoring and obtaining system resource usage, process states, and backup policy parameters; generating a normalized band value based on the system resource usage, the process states, and the backup policy parameters; generating a straight line plot based on the band value, a total CPU value, and a deviation value; calculating a slope of the straight line plot, wherein the slope is utilized to generate a deviation value based further on a first value and a second value received from a user, and wherein the deviation value is fed back to the generation of the straight line plot to normalize the slope; generating control values based on the slope; and adjusting performance of the backup application based on the control values to regulate system resource usage of the backup application.